2 years ago

Describe how covalent bonds form

1 answer:

3 0

Answer:

A covalent bonds form when the difference between the electronegativity of two atoms is too small for an electron transfer to occur to form ions

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If an object has a density of 0.55 g/mL, what is its density in cg/L?

expeople1 [14]

"cg" is centigram, which is one-hundredth of a gram.

I will first convert from g to cg (multiply by 100), then from mL to L (multiply by 1000).

$\frac{0.55g}{mL}*\frac{100cg}{1g}*\frac{1000mL}{1L}=55,000\frac{cg}{L} \ or \ 5.5e4\frac{cg}{L}$

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3 years ago

Which of the following statements does not describe what he structure of an atom an atom has a small dense center called nucleus

nikklg [1K]

Answer:

inside the nucleus of an atom are protons and electrons.

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3 years ago

Balance NaOH + H3PO4->H2O + Na3PO4

Masteriza [31]

Answer:

3NaOH + H3PO4 ---> 3H2O + Na3PO4

Explanation:

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3 years ago

Among the alkali earth metals, the tendency to react with other substances

worty [1.4K]

The answer would be letter A.Among the alkali earth metals, the tendency to react with other substances <span>increases from bottom to top within the group. We know that when there is an increase of metallic property, there will also be an increase of reactivity. </span>

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4 years ago

1. EXPLAIN the steps required to find the molar mass of NH3 . Also,

Natasha_Volkova [10]

Answer: Molar mass of $NH_3$ is 17.03 g

Explanation:

Molar mass is defined as the mass in grams of 1 mole of a substance.

S.I Unit of Molar mass is gram per mole and it is represented as g/mol.

It is found by adding the atomic masses of all the elements present.

Atomic Mass of Nitrogen (N) = 14.007 g

Atomic Mass of Hydrogen (H) = 1.008 g

Molar mass of $NH_3$ = 1(14.007)+3(1.008) g = 17.03 g

7 0

3 years ago