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3 years ago

The number at the end of an isotope’s name is the ____ number. A) Atomic B)neutron C)mass D)electron

2 answers:

3 0

each isotope of a given element has a different mass number. For example, carbon-12, carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13 and 14

SOVA2 [1]3 years ago

3 0

I think mass but don't hold it against me.

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For the reaction 2 NO(g) + 2 H2(g) => N2(g) + 2 H2O(g) the following data were collected. What is the rate law for this react

harkovskaia [24]

Answer: The rate law expression for the given reaction is written below.

Explanation:

Rate law is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

For the given chemical equation:

$2NO(g)+2H_2(g)\rightarrow N_2(g)+2H_2O(g)$

Rate law expression for the reaction:

$\text{Rate}=k[NO]^2[H_2]^2$

Hence, the rate law expression for the given reaction is written above.

5 0

3 years ago

2) Using the following equation:

Ganezh [65]

the answer is 133

because thats how the water is

6 0

2 years ago

Which atom has five electrons in its outer level and 10 electrons in the inner energy levels

Sever21 [200]

Oxygen 47 Hydrogen 63

Silicon 28 Oxygen 25.5

Aluminum 7.9 Carbon 9.5

Iron 4.5 Nitrogen 1.4

Calcium 3.5 Calcium 0.31

Sodium 2.5 Phosphorus 0.22

Potassium 2.5 Chlorine 0.03

Magnesium 2.2 Potassium 0.06

Titanium 0.46 Sulfur 0.05

Hydrogen 0.22 Sodium 0.03

Carbon 0.19 Magnesium 0.01

All others <0.1 All others <0.01 Living matter

6 0

3 years ago

What makes a substance a solid

snow_lady [41]

Answer:

<h3>In a solid, molecules are packed together, and it keeps its shape. ... Matter is the "stuff" of the universe, the atoms, molecules and ions that make up all physical substances. In a solid, these particles are packed closely together and are not free to move about within the substance.</h3>

8 0

3 years ago

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The chemical formula for the ionic compound formed when elements of ca and n react is

LiRa [457]

When carbon reacts with nitrogen, the product is called carbon nitride. Carbon has a plus two charge while nitrogen has a -3 charge. The product is a result of the exchange of the charges that reflects on the subscripts of the elements. Hence, the chemical formula is c. Ca3N2.

4 0

3 years ago

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