Answer:
Neutral ions
Explanation:
Because they have a neutral charge They can only produce neutrally.
Determine whether each substance will sink or float in corn syrup, which has a density of 1.36 g/cm3. Write “sink” or “float” in the blanks. Gasoline: Water: Honey: Titanium:
Answer:
Here's what I get
Explanation:
A substance with ρ < 1.36 g/cm⁻³ will float on corn syrup.
A substance with ρ > 1.36 g/cm⁻³ will sink in corn syrup
[tex]\begin{array}{rrr}\textbf{Substance} & \mathbf{\rho/g\cdot \textbf{cm}^{-3}}& \textbf{Sink/Float}\\\text{Gasoline} & 0.75 & \text{Float}\\\text{Water} & 1.00 & \text{Float}\\\text{Corn syrup} & 1.36 & -\\\text{Honey} & 1.42 & \text{Sink}\\\text{Titanium} & 4.54 & \text{Sink}\\\end{array}[/tex]
Answer:
Gasoline and water floats, Honey and Titanium sinks.
Explanation:
One side of a cube is 5 cm long. What is the cube's volume?
5
15
25
125
Answer: 125
Explanation: volume is l x w x h and if its a cube then length, width and the height will be the same so its just 5 x 5 x 5
What is the molarity of 10.0 g of NaCl dissolved in water to make 100. mL?
Answer:
= 1.7 M
Explanation:
Molecular mass of NaCl = ( 23+35.5 ) = 58.5g
58.5g of NaCl are weighed by 1 mole of NaCl
10.0g of NaCl will be weighed by ( 10÷58.5 )
= 0.17 moles of NaCl
100mL = ( 100÷1000)L = 0.1L
0.1L of a solution is occupied by 0.17 moles of NaCl
1L of solution will be occupied by [(1÷0.1)×0.17]
=1.7 M
Final answer:
The molarity of a solution made by dissolving 10.0 g of NaCl to make a 100 mL solution is 1.71 M.
Explanation:
The student is asking to determine the molarity of a sodium chloride (NaCl) solution made by dissolving 10.0 g of NaCl in enough water to make a 100 mL solution. To find the molarity, we first convert the mass of NaCl to moles by using its molar mass, which is 58.44 g/mol. After that, we divide the number of moles by the volume of the solution in liters.
Calculations:
Moles of NaCl: 10.0 g ÷ 58.44 g/mol = 0.171 mol
Volume of solution: 100 mL = 0.100 L
Molarity of NaCl solution: 0.171 mol ÷ 0.100 L = 1.71 M
What type of bond is composed of a metal and anonmetal?
Answer:
anonmetal
Explanation:
CAN SOMEONE PLEASE HELP ME I DON’T UNDERSTAND :(
Answer:
A supersaturated solution
N each reaction box, place the best reagent or reactant from the list below. reagents may be used more than once or not at all. draw the intermediate products b and c (both are neutral; omit byproducts).
Answer:
See explaination
Explanation:
See attachment for the drawing of the intermediate products b and c (both are neutral; omit byproducts).
How would you describe a particle of alpha radiation?
-a helium atom with no neutrons
-an electron ejected from a neutron
-a highly energized light particle, or photon
-a helium nucleus with no electrons
Answer:
A helium atom with no neutrons
The ____ can be described as the basic unit of life. (2 points) atom neutron cell nucleus
Answer:
the cell can be the described as the basic unit of life
Atoms of _______ lose electrons to empty their outer electron shells and become ________ ions.
A. None of these
B. metals, negative
C. nonmetals, negative
D. metals, positive
Atoms of metal lose electrons to empty their outer electron shells and become positive ions.
What is metal ?A metal is a substance that has a shiny look when freshly processed, polished, or shattered, and conducts electricity and heat rather effectively. Generally speaking, metals are malleable and ductile. These characteristics are the outcome of the metallic link between the metal's atoms or molecules.
According to popular belief, the term "metal" originated during the hippy era, when "heavy" denoted profundity or seriousness. Metal music is centered on a few essential elements.
Atomic components like electrons, neutrons, and protons make up metals. The quantity of protons in an atom can be used to identify it from an atom of another element.
Thus, option D is correct.
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what total mass of a 16 gram sample of 60Co will remain unchanged after 15.9 years
Answer:
2 g
Explanation:
Please HELP
Can more than just one electron transfer to form an ionic compound? Explain and give an example
Answer: Yes , in [tex]MgCl_2[/tex], two electrons from magnesium are transferred to chlorine atoms.
Explanation:
Ionic compound is formed by the transfer of electrons. For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
For example : For formation of [tex]MgCl_2[/tex]
Electronic configuration of magnesium:
[tex][Mg]=1s^22s^22p^63s^2[/tex]
Magnesium atom will loose two electrons to gain noble gas configuration and form magnesium cation with +2 charge.
[tex][Mg^{2+}]=1s^22s^22p^63s^0[/tex]
Electronic configuration of chlorine:
[tex][Cl]=1s^22s^22p^63s^23p^5[/tex]
Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.
[tex][Cl^-]=1s^22s^22p^63s^23p^6[/tex]
In Magnesium chloride two electrons from magnesium metal gets transferred to two chlorine atoms and thus [tex]MgCl_2[/tex] is formed.
Which of the following BEST explains how matter and energy cycle through ecosystems?
Answer:
A
Explanation:
Calculate the percent yield for the reaction above if 25.0 grams of
H2SO4 was actually produced and the theoretical yield was predicted to be 42.0 grams. (% yield = Actual/ theoretical x 100)
SO3(g) + H200 H2SO4(9)
O 59.5
O 168
O 0.595
O 1.68
Answer:
A. 59.5
Explanation: actual divided by theoretical times 100 equals percent yield so 25/42 times 100 is 59.5 ish
can somebody help me with chemistry ?
Answer:
Sure!
A) Base
A) it will conduct electricity
Explanation:
To answer your question:
Phenolphthalein is one of the most widely used indicator in acid–base titrations. In titration setting, it turns colorless in acidic solutions and pink in basic solutions.
Thus the cleaning solution is A) Base
Another way to know it is a base is by looking at pH.
pH scale is 0-14 (0-6 Acidic, 7 Neutral, 8-14 basic) thus since cleaning solution has pH of 9.6 it falls under the pH range of 8-14 which is basic, hence your solution is basic.
HNO3 is a strong acid hence when put it in water it dissociates into ions. IONS are required to transmit electricity hence HNO3 will conduct electricity
True or False: Water molecules "stick together" due to hydrogen bonds.
Answer:
True
Explanation:
To begin with,
Hydrogen bonds are attractions that contain a force caused by the difference in charge. This is due to the positive hydrogen ions as well as slightly negative ions. Therefore, hydrogen bonds make water molecules 'sticky.' To add, the attractions between hydrogen bonds are weaker than ionic and covalent bonds but strong enough to cause them to 'stick together'
Hope this helps.
20. If you add the same amount of heat to a kilogram of water and a
kilogram of gold, would they both be the same temperature? If not,
which would be higher? Why? Assume that both start out at the same
temperature.
Final answer:
No, the final temperature of water will be higher than that of gold because water has a higher specific heat capacity.
Explanation:
No, when the same amount of heat is added to a kilogram of water and a kilogram of gold, they will not both reach the same temperature. The final temperature of water will be higher than that of gold. This is because water has a higher specific heat capacity than gold.
Specific heat capacity is the amount of heat energy required to raise the temperature of a material by one degree Celsius per unit mass. Water has a specific heat capacity of approximately 4.18 J/g°C, while gold has a specific heat capacity of about 0.13 J/g°C. This means that it takes much more heat energy to raise the temperature of water compared to gold.
Therefore, even if the same amount of heat is added to both substances, the water will experience a larger increase in temperature compared to gold.
How many years about was most of North America in the southern hemisphere?
What is the molar volume of a gas at standard temperature and pressure?
LOL
241
1121
2241
Angle of incidence and refraction for air at 0 degrees?
Answer:
zero
Explanation:
When the air is zero degrees then it implies that the air is travelling at an perpendicular to the normal direction.
Therefore, the angle of incidence would be zero degree and in relation to that the angle of reflection and refraction would also be zero degree as per the laws of reflection.
In other ways it can be said that the light goes un-deviated.
Which is most likely an effect of long-term environmental changes
Answer:
adaptation
extinction
speciation
Explanation:
Answer:
D
Explanation:
What are the ways in which energy conversion can occur?
Answer:
Energy can exist in many forms within a system and may be converted from one form to another within the constraint of the conservation law. These different forms include gravitational, kinetic, thermal, elastic, electrical, chemical, radiant, nuclear, and mass energy.
Explanation:
Energy can exist in many forms within a system and may be converted from one form to another within the constraint of the conservation law. These different forms include gravitational, kinetic, thermal, elastic, electrical, chemical, radiant, nuclear, and mass energy.
Energy can be converted from one form to another; Mechanical energy to electrical energy, Electrical energy to chemical energy.
Principle of conservation of energy
The principle of conservation of energy states that, energy can neither be created nor destroyed but can be converted from one form to another.
Conversion of energy from one form to anotherMechanical energy to electrical energy: This occurs when a generator is used to produce electricity.Electrical energy to chemical energy: This occurs when current is used to slit or deposite molecules in electrolysisChemical energy to electrical energy: This occurs when chemical energy from a battery is usued to power a torch light.Learn more about energy conversion here: https://brainly.com/question/961052
If a student wanted to find a diagram of the human reproductive system in his/her science textbook, which part of the book should be looked at FIRST?
A) appendix
B) bibliography
C) glossary
D) index
Answer:D)index
Explanation:
A chemist is analyzing a substance known to be an Arrhenius acid. Which of the following substances could it be?
a) HNO3
b) H2O
c) KOH
d) NH3
Answer:
HNO3
Explanation:
Nitric Acid is an example of an Arrhenius acid.
Final answer:
HNO₃ (nitric acid) is the only substance among the listed options that qualifies as an Arrhenius acid as it increases the concentration of H+ ions in aqueous solutions.
Explanation:
An Arrhenius acid is a substance that increases the concentration of H+ ions in water, which usually results in the formation of hydronium ions (H₃O+). Given the choices provided, the substance that qualifies as an Arrhenius acid is HNO₃ (nitric acid). This is because HNO₃ dissociates in water to produce H+ ions and NO₃⁻ ions.
a) HNO₃ - This is an Arrhenius acid as it produces H+ ions when dissolved in water.
b) H₂O - Water is not an Arrhenius acid; it is neutral, acting as an acid or a base under different conditions.
c) KOH - Potassium hydroxide is an Arrhenius base because it increases the concentration of OH- ions in solution.
d) NH₃ - Ammonia is considered a Brønsted-Lowry base, but not an Arrhenius acid or base, as it does not produce OH- ions in solution.
What type of reaction occurs when H+ reacts with OH-
Answer:
acid/base reaction
Explanation:
H+ is acid
OH- is base
Know base and acid properties.
- Hope that helps! Please let me know if you need further explanation.
Answer:
neutral.
this is because the concentration between hydrogen and hydroxide is equal
Explanation:
The reaction forms water
What is the electron configuration of a potassium ion when it has formed an ionic bond with a bromine ion?
A. [2.8.2]-
B. [2.8.8]-
C. [2.8.8]+
D. [2.8]+
A. [2.8.2]- exists the electron configuration of a potassium ion when it contains created an ionic bond with a bromine ion.
What is Electron configurations?Electronic configuration, also named electronic structure, is the arrangement of electrons in energy levels about an atomic nucleus. According to the older shell atomic model, electrons occupy several groups from the first shell nearest the nucleus, K, through the seventh shell, Q, distant from the nucleus.
Electron configurations exist as the summary of where the electrons are around a nucleus
A. [2.8.2]- exists the electron configuration of a potassium ion when it contains created an ionic bond with a bromine ion.
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Which is an example of a natural disaster limiting population growth?
Answer:
A hurricane wiping out a new species of flower in the tropical rain forests of Brazil.
Explanation:
Is the melting of Arctic ice an example of
positive feedback or negative feedback?
Explain
Answer:
here is your answer buddy
Ice-albedo feedback is a strong positive feedback in the climate system. Warmer temperatures melt persistent ice masses in high elevations and upper latitudes. Ice reflects some of the solar energy back to space because it is highly reflective.
Explanation:
please mark me as brilliant
Which one of the following factors would not speed up a chemical reaction?
A. increasing the concentration of a reactant
B. adding a catalyst
C. raising the temperature
D. making the reactant particles larger
Making the reactants particles larger would not speed up a chemical reaction.
HOW TO SPEED UP A CHEMICAL REACTION?The speed at which a chemical reaction occurs is called the rate of reaction.
The factors that can increase the rate of a chemical reaction are as follows:
increasing the concentration of a reactantadding a catalystraising the temperatureTherefore, making the reactants particles larger would not speed up a chemical reaction.
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A scientist is tracking an object orbiting the sun that is found between mars and Jupiter. Which additional feature can be used to determine the object is an asteroid?
Final answer:
An object orbiting the sun between Mars and Jupiter is likely an asteroid if its orbital period is between 3.3 to 6 years and it is not spherical but 'potato-shaped' or highly elongated, which indicates it is in the asteroid belt. Additional features like a cylindrical shape, as observed in the interstellar asteroid discovered in 2017, also suggest it's an asteroid.
Explanation:
To determine if the object orbiting the sun between Mars and Jupiter is an asteroid, several features can be considered. Primarily, asteroids are found mainly in the asteroid belt, which contains all asteroids with orbital periods between 3.3 to 6 years. If the object's orbit is within this range and lies near the plane in which Earth and other planets circle, this would suggest it is indeed an asteroid. Additionally, asteroids have a variety of shapes but are often not spherical due to their smaller size, which lacks sufficient gravity to pull them into a round shape. They can be "potato-shaped," exhibiting irregularities; however, if the object was found to have a highly elongated or cylindrical shape, this would also indicate it is an asteroid, as seen with the first interstellar asteroid discovered in 2017.
When designing a spacecraft to match course with an asteroid, one would likely include instruments for imaging, such as cameras to capture visual morphology; spectrometers to analyze the composition; and perhaps instruments to measure the asteroid's mass and gravity field. The purpose of these instruments would be to learn about the asteroid's physical properties, composition, and potentially its internal structure to gain insights into the early solar system's history and the composition of the material that formed the planets.
How many moles of magnesium nitrate are in 6.35 grams of magnesium nitrate?
Answer:
0.0428 moles
Explanation:
6.35 g Mg(NO3)2 ×
[tex]\frac{1 \: mol}{148.32 \: g} [/tex]
6.35 g / 148.32 g
0.0428 moles
According to mole concept, there are 0.0428 moles of magnesium nitrate in 6.35 grams of magnesium nitrate.
What is a mole?Mole is defined as the unit of the amount of substance . It is the quantitative measure of amount of substance of how many elementary particles are present in a given amount of substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom or ion depending on the type of substance. Amount of elementary entities present in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.Number of moles=mass/molar mass= 6.35/148.3=0.0428 moles.
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