True or false atoms are made up of tiny particles called molecules true or false

Answers

Answer 1

False, Molecules are made of atoms and atoms are made of quarks.

Related Questions

The "stickiness" of water results from the ______________ bonding of water molecules.

Answers

the stickiness of water is due to the 2 hyrdrogen atoms and are attracted to the oxygen atom of other nearby water molecules which is called hydrogen bonding

Which element has the same number of energy levels as aluminum (Al) and the same number of valence electrons as calcium (Ca)?
A. Beryllium B. Sodium C. Potassium D. Magnesium

Answers

The correct answer is Magnesium (Mg)

The element that has the same number of valence electrons with calcium (Ca) and aluminium (Al) energy levels is D Magnesium.

Since aluminium (Al) belongs to the third period of the periodic table, it has three energy levels (electron shells). As Group 2 of the periodic table correlates to the number of valence electrons, calcium (Ca) has two valence electrons.

Aluminum (Al) and magnesium (Mg) both have three energy levels and two valence electrons (Ca). As a result, magnesium (Mg) satisfies the requirements.

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List the following minerals in order of decreasing hardness: apatite, calcite, corundum, feldspar, and talc.

Answers

Corundum, Feldspar, Apatite, Calcite, and Talc.

Explanation:

Mohs scale is a scale that represents hardness of different minerals in increasing order from bottom to top.

So, according to Mohs scale hardness of given minerals is rated as follows.

Apaptite is at number 5.

Calcite is at number 3.

Corundum is at number 9.

Feldspar is at number 6.

Talc is at number 1.

Therefore, given minerals in order of decreasing hardness are listed as follows.

Corundum > Feldspar > Apaptite > Calcite > Talc

How is the mass in grams of the element converted to amount in moles

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The mass in grams is simply divided by the relative atomic mass of that element as in the formula: Mole=mass/relative atomic mass. for ex-. To find amount in moles of 46 grams of Sodium(Na). We know that relative atomic mass of sodium from periodic table is 23; Therefore, amount in moles of sodium=46/23=2 moles.

Nacl , or halite, dissolves in water. which type of bond is most abundant which allows it to dissolve?

Answers

Intermolecular bonding:
Water is a polar molecule exhibit dispersion forces and hydrogen bonding
Salt is a polar molecule exhibit dispersion forces and dipole dipole bonding

Same bonding capacity therefore similar bonding capacity, therefore salt able to dissolves in water

A 0.08541 g sample of gas occupies 10.0-ml at 288.5 k and 1.10 atm. upon further analysis, the compound is found to be 13.068% c and 86.932% br. what is the molecular formula of the compound? (order: c, x)

Answers

C2Br2 First, we need to determine how many moles of the gas we have. For that, we'll use the Ideal Gas Law which is PV = nRT where P = pressure (1.10 atm = 111458 Pa) V = volume (10.0 ml = 0.0000100 m^3) n = number of moles R = Ideal gas constant (8.3144598 (m^3 Pa)/(K mol) ) T = Absolute temperature Solving for n, we get PV/(RT) = n Now substituting our known values into the formula. (111458 Pa * 0.0000100 m^3) / (288.5 K * 8.3144598 (m^3 Pa)/(K mol)) = (1.11458/2398.721652) mol = 0.000464656 mol Now let's calculate the empirical formula for this compound. Atomic weight carbon = 12.0107 Atomic weight bromine = 79.904 Relative moles carbon = 13.068 / 12.0107 = 1.08802984 Relative moles bromine = 86.932 / 79.904 = 1.087955547 So the relative number of atoms of the two elements is 1.08802984 : 1.087955547 After dividing all numbers by the smallest, the ratio becomes 1.000068287 : 1 Which is close enough to 1:1 for me to consider the empirical formula to be CBr Now calculate the molar mass of CBr 12.0107 + 79.904 = 91.9147 Finally, let's determine if the compound is actually CBr, or something like C2Br2, or some other multiple. Using the molar mass of CBr, multiply by the number of moles and see if the result matches the mass of the gas. So 91.9147 g/mol * 0.000464656 mol = 0.042708701 g 0.0427087 g is a lot smaller than 0.08541 g. So the compound isn't exactly CBr. Let's divide them to see what the factor is. 0.08541 / 0.0427087 = 1.99982673 1.99982673 is close enough to 2 to within the number of significant digits we have for me to claim that the formula for the unknown gas isn't CBr, but instead is C2Br2.

PV = mRT: gas law.

M = [tex]\frac{n}{m}[/tex] : molecular mass

Use: M = [tex]\frac{mRT}{PV}[/tex]

Where

m = 0.04343 g

P = 1.10 atm

V = 0.0100 L

R = 0.08205746 (14) L atm K mole

T = 293.0 K

M: the molecular mass of the gas.

Then take the mass of this molecule, the molecular mass of the atom (C & Cl), and also the proportion of mass given to search out the amount of moles per mole of gas.

Further explanation

The chemical formula is a component of a formula, that has associate understanding of a substance that determines the kind and a relative range of atoms that area unit in this substance. Or in different languages, a formula are often given that contains data concerning the atoms that form up a selected chemical composition.

Chemical formula is split into 2 specifically chemical formula and formula. The formula announces that the formula mentioned will prove the molecules of the mix atoms. whereas the formula is that the original formula of a composition. The chemical formula are often determined if the relative molecular mass is thought.

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Class: highschool

Subject: Chemistry

Keywords: Mole, Formula, Mass

Does matter have protons, nuetrons, and electrons ??

Answers

yes , matter has protons , neutrons and electrons

Fill in the blanks: when an atom absorbs energy, the electrons move from their _________________ state to an _________________ state. when an atom emits energy, the electrons move from a(n) _________________ state to their _________________ state and give off _________________.

Answers

Fill in the blanks: when an atom absorbs energy, the electrons move from their (ground) state to an (excited) state. when an atom emits energy, the electrons move from a(n) (excited) state to their (ground) state and give off (energy)

Answer:

When an atom absorbs energy, the electrons move from their ground state to an Excited state. when an atom emits energy, the electrons move from an excited state to their ground state and give off energy(radiation).

Explanation:

In An atom electrons sphere the positively charged nucleus in different energy orbits.

The low energy orbits present near the nucleus and high energy orbits are farther from the nucleus. when an electron absorbs energy it becomes excited and jumps to a high energy state and when it loses energy as the radiation it gets back to its ground state or low energy state.

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why scientists use mass instead of weight for their measurements

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An objects weight is how hard gravity is pulling on it. We think the weight is the same everywhere ... because we all live on the surface of the planet Earth! But in orbit it would not push on the scales at all. The scales would show 0 kg ... but themass is still 100 kg !

During which stage of technological design are prototypes built

Answers

its: Implement a solution

Answer:

option A, implement a solution.

Explanation:

Is soda an element compound heterogeneous mixture or solution?

Answers

Soda – If un-agitated, it may be a solution uniform, in one phase, and composed of more than one material such as coloring, sugar, water, etc.

Find the ratio of the volume divided by the temperature for the first data pair. Use significant figures.
V / T = 0.72/276

Answers

From the pair of values given, the ratio of the volume to the temperature for the first data pair is, 0.0026 cm^3/K

What is a ratio?

A ratio is a comparison betweentwo quantities showing how much one quantity cobtains another.

From the data provided, the first data pair is as follows:

temperature = (276 K)volume = 0.72 cm^3

Ratio of volume to temperature = volume/temperature

Ratio = 0.72/276

Ratio = 0.002608 cm^3/K

The significant rule for division is the least number of significant figures used in the operation.

The least significant figure of the values given is 2.

Therefore, the ratio of the volume to the temperature for the first data pair is 0.0026 cm^3/K

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Answer:

They're both 0.0026

Under which conditions will sugar most likely dissolve fastest in a cup of water? open study

Answers

the sugar would dissolve better under warmer temperatures because the hot particles interfere with the sugars particles.

How many sugar molecules are in 0.734 mol sugar, C6H12O6? Please explain

Answers

To answer this question, you need to know the Avogadro number. To find the amount of sugar molecule from mol unit you need to multiply it by the Avogadro number.
The calculation should be like this: 0.734 mol * 6.02*10^23 molecule/ mol= 4.41 * 10^23 molecule

What are the subatomic particles that are responsible for comprising the atom's atomic mass?

Answers

Proton and Neutron are responsible

A beer maker is using yeast to make his favorite brew. how does yeast produce ethanol? through the reduction of acetaldehyde, derived from pyruvate through the oxidation of acetaldehyde, derived from pyruvate through the direct reduction of pyruvate, similar to lactic acid fermentation directly from the reduction of glucose through the reduction of lactic acid

Answers

In brewing, yeast is used for the fermentation step, which is the conversion of sugars into carbon dioxide gas (CO2) and ethyl alcohols (etOH). Yeast cells require complex enzymes for the fermentation of glucose based sugars into alcohols and carbon dioxide. The process involves both aerobic phases where yeast proliferate on a log scale followed by an anaerobic phase where oxygen is deprived and C02 maintains the gaseous environment. The second phase also clarifies the product allowing for the conversion of less savory alcohols into more palatable alcohols like ethyl alcohol.

What do the properties of waves moving through aquatic environments tell us about the organisms living in those environments?

Answers

Assmksksmwmwosmeodmksnsks

How many grams of c2h5oh must be burned to raise the temperature of 400.0 ml of water from 20.0 ∘c to 100.0 ∘c? (the specific heat of water is 1.00 cal/g⋅∘c or 4.184 j/(g⋅∘c)?

Answers

From tables, the heat of combustion of ethanol (C₂H₅OH) is 29.7 kJ/g.

Given:
V = 400 mL of water
ΔT = 100 - 20 = 80°C, temperature rise
c = 1.00 cal/(g-°C), specific heat of water = 4.184 J/(g-°C)

Because the density of water is approximately 1.0 g/mL. the mass of water is
m = 400 g.

Let x = grams of ethanol that should be burned to make the water rise
by 80 °C.
Then
(29.7 x 10³ J/g)*(x g) = (400 g)*(4.184 J/g-°C))*(80 °C)
29.7 x 10³x = 1.339 x 10⁵
x = 4.5 g

Answer: 4.5 grams

In the carbon-oxygen cycle, carbon dioxide is used for _____ and oxygen is used for _____. respiration, photosynthesis ozone, respiration photosynthesis, respiration evaporation, condensation

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photosynthesis ozone and condensation

photosynthesis ozone and condensation good day

Someone help me please

Answers

oh yeah i can put it now. so the answer is Sr

The elements in group 7a are known by what name? transition metals halogens alkali metals alkaline earth metals noble gases

Answers

Halogens are in group 7!!!!!!

Final answer:

The elements in group 7A of the periodic table are known as halogens, which include fluorine, chlorine, bromine, iodine, and astatine.

Explanation:

The elements in group 7A of the periodic table are known as halogens. This group includes fluorine, chlorine, bromine, iodine, and astatine. In the periodic table, various groups have specific names. For example, group 1 elements are called alkali metals, group 2 elements are known as alkaline earth metals, group 18 elements are termed noble gases, and similarly, group 7A elements are named as halogens. Halogens have similar properties as they all have seven electrons in their outermost shell and readily gain an electron to achieve a stable electron configuration.

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When a chemical reaction takes place, the starting substances (substances that will undergo the change) are called _____.

Question 2 options:

products

mixtures

reactants

yeilders

Answers

reactants sound like it could be right. ;)

2na + cl2 → 2nacl in this chemical reaction a very reactive metal, sodium, combines with a poisonous gas and results in the formation of ordinary table salt. in the chemical reaction ______________ is the product.

Answers

the answer is salt hope this helps

Answer:

NaCl is the product

Explanation:

Why is a very small amount of cerium oxide nanoparticles need: A) the nanoparticles are elements
B) the nanoparticles are very reactive
C) the nanoparticles have a high surface area of volume ratio

Answers

have a high suface area to volume ratio

A very small amount of cerium oxide nanoparticles is needed due to their high surface area to volume ratio, which enhances reactivity and efficiency in chemical applications such as catalysis.

The answer is C) the nanoparticles have a high surface area to volume ratio. This high surface area to volume ratio is significant because it provides more active sites for reactions to occur. In the field of nanotechnology, substances like cerium oxide nanoparticles demonstrate different and often enhanced properties when compared to their bulk counterparts due to their tiny size (between 1 and 100 nm). As particles become smaller, their surface area becomes larger in comparison to their volume, which is particularly significant for chemical reactions which typically occur on surface sites.

The properties that arise from this high surface area to volume ratio include lower melting points, higher vapor pressures, and increased reactivity. Specifically, nanoparticles like cerium oxide are highly efficient in applications such as heterogeneous catalysis, where reactions occur at the surface of the catalyst. A small amount of these nanoparticles can provide a large surface area, thus making reactions more efficient and reducing the amount of material required.

The group of elements that tend to be found as toxic gases or liquids in their pure form including chlorine, bromine and iodine are called alkali metals true or false

Answers

Final answer:

The group of elements including chlorine, bromine, and iodine are called halogens, not alkali metals. Halogens are highly reactive nonmetals in Group 17, while alkali metals are reactive metals in Group 1.

Explanation:

The statement that the group of elements including chlorine, bromine, and iodine are called alkali metals is false. These elements actually belong to a group known as the halogens, which are part of Group 17 in the periodic table. The halogens include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At), and are notorious for being highly reactive nonmetals. The term halogen means "salt-former," which indicates their tendency to react with alkali metals and alkaline earth metals to form halide salts. Chlorine exists as a toxic gas, bromine as a liquid, and iodine as a solid at room temperature.

In contrast, the alkali metals make up Group 1 in the periodic table and include elements such as lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). These elements are quite different from the halogens, as they are highly reactive metals. With the exception of hydrogen, which is often placed in Group 1 but is not a metal, alkali metals tend to combine with halogens to form compounds like table salt (sodium chloride).

Oxygen has an atomic number of 8 and most commonly, a mass number of 16. thus, what is the atomic mass of an oxygen atom?

Answers

oxygen has atomic mass 16 amu

What does henry miller mean when he says "Life moves on,whether we act as cowards or heroes"?

Answers

This is a complex question that can be interpreted in many ways. Personally, I believe that it is saying that whether you decide to stand up and fight or sit back and allow life to pass us by, either way, the time passes and moves forward to the next opportunity. But, in that respect, it also gives us an opportunity each time a decision needs to be made to choose to be a hero or a coward and regardless of your chosen life will move on to the next decision.

Which of the following describes the characteristics of a gas?
Made up of particles packed closely together, having both definite shape and definite volume
Made up of particles packed relatively close together, having an indefinite shape but a definite volume
Made up of particles that are far apart from each other, having both indefinite shape and indefinite volume
Made up of positively charged particles and negatively charged electrons, having both indefinite shape and indefinite volume

Answers

I think made up of particles that are far apart from each other, having both indefinite shape and indefinite volume describes the characteristics of a gas.

Answer: The correct statement is made up of particles that are far apart from each other, having both indefinite shape and indefinite volume

Explanation:

There are 4 states of matter:

Solid state: In this state of matter, the particles are closely packed and they do not have any space between them. Thus, this state of matter has the highest intermolecular forces of attraction between them.

This state have a definite shape and volume.

Liquid state: In this state of matter, the particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another. The intermolecular forces between the particles are less as compared to the solid state.

This state have a definite volume but does not have a fixed shape and they can take up the shape of container in which they are kept.

Gaseous state: In this state, the particles are loosely arranged and have a lot of space between them. Thus, this state of matter has the lowest intermolecular forces of attraction between them.

This state have indefinite volume as well as shape. It can take up the volume and shape of the container in which they are kept.

Plasma state: In this state of matter, a hot ionized gas consisting of equal number of positively charged ions and negatively charged electrons are present.

This state have indefinite volume as well as shape.

Hence, the correct statement is made up of particles that are far apart from each other, having both indefinite shape and indefinite volume

If zinc chloride weighs 136.28 g/mol, what is its molecular formula? show calculations

Answers

Final answer:

The molecular formula of zinc chloride, which has a molar mass of 136.28 g/mol, is ZnCl2. This was determined by summing the molar mass of one zinc atom and two chlorine atoms.

Explanation:

To find the molecular formula of zinc chloride, we need to know the atomic masses of zinc and chlorine. The atomic mass of zinc is approximately 65.38 g/mol whereas chlorine has an atomic mass of approximately 35.45 g/mol. Since we know that zinc chloride is composed of one zinc atom and two chlorine atoms (ZnCl2), we can calculate the molar mass as follows:

First, multiply the atomic mass of zinc (65.38 g/mol) by 1, because there's 1 zinc atom in a molecule of zinc chloride.Then, multiply the atomic mass of chlorine (35.45 g/mol) by 2, because there's 2 chlorine atoms in a molecule of zinc chloride. This equals to 70.90 g/mol.Add these two values together. Therefore, 65.38 g/mol (Zn) + 70.90 g/mol (2Cl) = 136.28 g/mol.

So, the molecular formula for zinc chloride is ZnCl2.

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Final answer:

The molecular formula of zinc chloride, given a molar mass of 136.28 g/mol, is determined to be ZnCl2 by dividing the difference between the molar mass and the atomic mass of zinc by the atomic mass of chlorine and finding that there are approximately two chlorine atoms per zinc atom.

Explanation:

The molecular formula of zinc chloride can be determined using its molar mass of 136.28 g/mol and the atomic masses of zinc (65.38 g/mol) and chlorine (35.45 g/mol). If we assume the formula is ZnClx, where x is the number of chlorine atoms, we can calculate x as follows:

Molar mass of ZnClx = atomic mass of Zn + (x)(atomic mass of Cl)

136.28 g/mol = 65.38 g/mol + (x)(35.45 g/mol)

Solving for x gives us:

x = (136.28 g/mol – 65.38 g/mol) / 35.45 g/mol

x ≈ 2

Therefore, the molecular formula of zinc chloride is ZnCl2.

The job outlook for physical therapists

A) is weak to very poor.
B) depends on the economy.
C) will remain stable.
D) will improve over time.

Answers

D) will improve over time.

Physical therapists are extremely skilled experts in the evolution and purpose of the human body. The purpose of a physical therapist is to improve the patient's capacity to move, reduce anxiety, restore employment, and prevent incapacity. Physical therapy is a requisite element of inpatient care here is a high demand for physical therapists in the workforce. According to the Bureau of Labor Statistics, the profession of physical therapists is required to grow by 36 percent from 2014 to 2024, much durable than the average for all professions.

The job outlook for physical therapists is projected to improve over time, due to increasing demands from aging populations and those with chronic conditions that impact mobility.

The job outlook for physical therapists D) will improve over time. According to the Bureau of Labor Statistics, employment of physical therapists is projected to grow much faster than the average for all occupations. Demand for physical therapy services will come from aging baby boomers, who are staying active later in life. Physical therapists will also be needed to treat people with mobility issues stemming from chronic conditions, such as obesity or diabetes.

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