3 years ago

Make the equations for the reactions between calcium and hydrochloric acid, name the products.

1 answer:

3 0

Answer:

Calcium carbonate reacts with hydrochloric acid to form carbon dioxide gas. 2HCl (aq) + CaCO 3(s) CaCl 2 (aq) + CO 2(g) + H 2 O (l).

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Aleksandr [31]

Answer:

Under the earth's surface, rocks melt, metamorphize, and crystalize.

Explanation:

Metamorphic and Igneous rocks are basically dependant on the heat/pressure of the environment under the surface :) Melting, metamorphosing and crystallization all occur under earth's surface.

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What substances pass through a leaf's stomata?

Lera25 [3.4K]

Oxygen and carbon dioxide

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How does the idea of a neutron help address the puzzles about the protons in the nucleus and the mass of atoms?

Kisachek [45]

Answer:

hen the number of neutrons is known and the atomic number of an element is known, it becomes easier to determine the approximate mass number by adding the two.

Explanation:

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2 years ago

6 How many moles are in a 321 g sample of magnesium?

Tatiana [17]

Answer:

13.4mol of Mg

Explanation:

Given parameters:

Mass of magnesium = 321g

Unknown:

Number of moles = ?

Solution:

The number of moles of a substance is given as;

Number of moles = $\frac{mass}{molar mass}$

Molar mass of Mg = 24g/mol

Insert the parameters and solve;

Number of moles = $\frac{321}{24}$ = 13.4mol of Mg

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2 years ago

Chlorine has a atomic number of 17. It often forms an ion by gaining 1 electron. What would it's charge be?

kvasek [131]

Answer:

The charge would be -1.

Explanation:

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