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2 years ago

Paleontologists have discovered several ancestors of the modern horse.

Chemistry

2 answers:

ExtremeBDS [4]2 years ago

8 0

Answer:

hyracotherium

Explanation:

..........

Dahasolnce [82]2 years ago

5 0

Answer:

hyracotherium

Explanation:

they are the oldest to date record of a horse

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Be sure to answer all parts. Write an unbalanced equation to represent each of the following reactions: Do not include phase abb

Eva8 [605]

Answer: The unbalanced chemical equations are written below.

Explanation:

An unbalanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is not equal to the total number of individual atoms on the product side. These equations does not follow law of conservation of mass.

For a:

The chemical equation for the reaction of nitrogen gas and oxygen gas follows:

$N_2+O_2\rightarrow NO_2$

The product formed is nitrogen dioxide.

For b:

The chemical equation for the decomposition of dinitrogen pentaoxide follows:

$N_2O_5\rightarrow N_2O_4+O_2$

The product formed is dinitrogen tetroxide and oxygen gas.

For c:

The chemical equation for the reaction of ozone to oxygen gas follows:

$O_3\rightarrow O_2$

The product formed is oxygen gas.

For d:

The chemical equation for the reaction of chlorine and sodium iodide follows:

$Cl_2+NaI\rightarrow NaCl+I_2$

The product formed is sodium chloride and iodine gas

For e:

The chemical equation for the reaction of magnesium and oxygen gas follows:

$Mg+O_2\rightarrow MgO$

The product formed is magnesium oxide

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2 years ago

What is the role of the greenhouse gases in the atmosphere?

Karolina [17]

Answer:

greenhouse effects are molecules that trap heat on earth atmosphere

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2 years ago

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How do you get hyphen notations?

laiz [17]

Answer:

In hyphen notation, the mass number is written after the name of the element. For example, in isotopic notation, the isotope of carbon that has a mass number of twelve would be represented as 12C . In hyphen notation, it would be written as carbon-12.

Explanation:

lol just took the question and looked it up online this was the first thing that i saw if its not correct im sorry

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2 years ago

Can someone help me, please?

VikaD [51]

15. D is correct, exothermic reactions release heat

I am not sure about 16

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2 years ago

This picture shows students working in a

Lilit [14]

Answer:

yes it is true they apply necessary safety measures

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2 years ago