CO2, NaCl, and HCl may all be classified as

1 answer:

7 0

CO2. NaCl. HCl. These may all be classified as____. A) elements and compounds B) elements and molecules C) elements and pure substances D) compounds and pure substances

I believe the correct answer is D. Compounds and pure substances.

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A piece of silver (Ag) metal weighing 194.3 g is placed in a graduated cylinder containing 242.0 mL of water. The volume of wate

mariarad [96]

Answer: The density of silver metal will be $10.50g/ml[\tex]Explanation:Density is defined as the mass contained per unit volume.[tex]Density=\frac{mass}{Volume}$

Given : Mass of silver = 194.3 grams

Volume of silver= volume of water displaced= $260.5-242.0=18.5mltex]Putting in the values we get:[tex]Density=\frac{194.3g}{18.5ml}=10.50g/ml/tex]Thus density of silver metal will be [tex]10.50g/ml$

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3 years ago

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Explain the difference between naming a covalent compound and an ionic compound.

erica [24]

Answer: An ion with fewer electrons than its neutral atom is called a(n) cation. The charge of an ion with more electrons than its neutral atom is. negative.Name an ionic compound by the cation followed by the anion. ... Covalent compounds are formed when two or more nonmetal atoms bond by sharing valence electrons. Valence electrons are the outermost electrons of an atom.

Explanation:

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3 years ago

How many grams of H2 are needed to produce 13.33g of NH3?

Zanzabum

The reaction to form NH3 is : N2 + 3H2-> 2NH3 12,33g NH3 is 12,33/17,03=0,3 =0,724 moles of NH3 moles NH3. So you need 1,5*0,724 = 1,086 moles H2 1,086*2,016 = 2,189 g of H2 is needed ro form 12,33 g NH3

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3 years ago

Predict the chemical formula of the compound that will form when Li and o interact.

Ksivusya [100]

Answer:

$Li_2O$

Explanation:

Hello!

In this case, when looking over the chemical formula of a compound formed when two elements interact, we need to realize about their location in the periodic table; thus, since lithium is a metal and oxygen a nonmetal, we infer lithium turns out the cation and oxygen the anion. Moreover, as the oxidation state of lithium is 1+ and that of oxygen is 2-, we can set up the chemical formula as follows:

$Li^+O^{2-}\\\\Li_2O$