What is determined by the motion of and distance between particles of a sample of matter?

Answers

Answer 1

Answer: heat is the speed of the particles and defines the higher speed at the higher heat temperature. the temperature of a substance also determines the state of matter a substance is when it has a higher heat temperature at lower densities.

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True or false an atom is the smallest particle of a whole element
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An 8.5 g ice cube is placed into 255g of water. Calculate the temperature change of water when the ice melts

Answers

To answer this problem, we assume that upon the addition, the ice just melts without the temperature change and just uses the latent heat. The water only uses the sensible heat. Hence the equation is 8.5 g * (80cal/g)*4.1858 (J/g)= 255 g 8(4.18 J/gK)*(ΔT). 80cal/g is the latent heat of vaporization of ice. ΔT is equal to 2.67 Kelvin.

Why is gas production not recognized as nitrate reduction?

Answers

The gas production not recognized as nitrate reduction is because organisms that can ferment also produce gas. Therefore even if gas is produced on the tube, you can't tell if it's by fermentation or by nitrate reduction. I hope the answer helps.

What mass of chloride gas will react with 96.6g of sodium?

Answers

Molar mass :

Cl₂ = 71.0 g/mol Na = 23.0 g/mol

2 Na + Cl₂ = 2 NaCl

2 x 23 g Na -------> 71.0 g Cl₂
96.6 g Na ----------> ?

Mass Cl₂ = ( 96.6 x 71.0 ) / ( 2 x 23 )

Mass Cl₂ = 6858.6 / 46

= 149.1 g of Cl₂

hope this helps!

Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron?a) A mole of iron has more atoms.
b) They both have the same mass.
c) A mole of magnesium has more mass.
d) They both have the same number of atoms.

Answers

Given a mole each for iron and magnesium, the number of atoms of each element is equal. Iron has a greater mass due to its greater molecular weight. The correct statement among the choices is D.

Answer: d) They both have the same number of atoms.

Explanation:

A mole is defined as the amount of substance that contains Avogardro number of the substance. Avogadro's number is given by $6.022* 10^(23)$ .

$1mole=6.022* 10^(23)particles$

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number $6.023* 10^(23)$

Thus 1 mole of magnesium and iron both contains $6.023* 10^(23)$ particles.

35 Which element reacts with oxygen to form ionic bonds?(1) calcium (3) chlorine(2) hydrogen (4) nitrogen

Answers

$\boxed{\left( 1 \right){\text{ calcium}}}$ reacts with oxygen to form ionic bonds.

Further Explanation:

Covalent bonds are the types of bonds that involve the sharing of electrons between the bonded atoms. This bond is usually formed between two or more non-metals.

Ionic bonds are the chemical bonds that involve the transference of electrons from one atom to another. These bonds are generally formed between metals and non-metals. In these types of bonds, ions are formed by the atoms. Cations are formed by the loss of electrons and anions result from the gain of electrons.

Oxygen is a non-metal. In order to form an ionic bond with oxygen, the other element has to be a metal.

Hydrogen, chlorine, and nitrogen are non-metals so these can form covalent bonds with oxygen. But calcium is a metal and it forms ionic bonds with oxygen. Calcium loses two electrons to form ${\text{C}}{{\text{a}}^(2 + )}$ and these electrons are gained by oxygen, resulting in the formation of ${{\text{O}}^(2 - )}$ . The attraction between ${\text{C}}{{\text{a}}^(2 + )}$ and ${{\text{O}}^(2 - )}$ is an ionic bond and the resulting compound is CaO (For structure, refer to the attached image).

Learn more:

Identification of ionic bonding: brainly.com/question/1603987
What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Chapter: Ionic and covalent compounds

Subject: Chemistry

Keywords: ionic bond, covalent bond, nitrogen, hydrogen, chlorine, calcium, oxygen, CaO, metal, non-metal.

Calcium is the element that reacts with oxygen to form an ionic bond. Calcium forms the ionic compound calcium oxide with oxygen. Hydrogen, chlorine, and nitrogen do not typically form ionic bonds with oxygen.

The element that reacts with oxygen to form ionic bonds is calcium.

Calcium (element #20 on the periodic table) readily reacts with oxygen to form calcium oxide, which is an ionic compound. In this reaction, calcium loses two electrons to become Ca2+, and oxygen gains two electrons to become O2-. This transfer of electrons creates an ionic bond, which is a type of chemical bond.

Hydrogen, chlorine, and nitrogen do not typically form ionic bonds with oxygen under normal conditions. Hydrogen forms covalent bonds with oxygen to create water, whereas chlorine and nitrogen mostly form covalent bonds.

Learn more about Ionic bonds here:

brainly.com/question/18297125

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Which is a molecule?
A. Ne
B. NaCL
C. Trail Mix
D. graphene

Answers

B) NaCl is a molecule.

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