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3 years ago

Which statement(s) is/are TRUE about covalent bonds?

Chemistry

1 answer:

tresset_1 [31]3 years ago

3 0

Answer:

1. Covalent bonds can form between two nonmetal atoms.

2. Covalent bonds can form between atoms of the same element.

3. Covalent bonds can form between atoms of different elements.

Explanation:

I hope this helps u! :D

Explanation:

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If it requires 23.4 milliliters of 0.65 molar barium hydroxide to neutralize 42.5 milliliters of nitric acid, solve for the mola

rodikova [14]

Volume Ba(OH)2 = 23.4 mL in liters :

23.4 / 1000 => 0.0234 L

Molarity Ba(OH)2 = 0.65 M

Volume HNO3 = 42.5 mL in liters:

42.5 / 1000 => 0.0425 L

number of moles Ba(OH)2 :

n = M x V

n = 0.65 x 0.0234

n = 0.01521 moles of Ba(OH)2

Mole ratio :

Ba(OH)2 + 2 HNO3 = Ba(NO3)2 + 2 H2O

1 mole Ba(OH)2 ---------------- 2 moles HNO3
0.01521 moles ----------------- moles HNO3

moles HNO3 = 0.01521 x 2 / 1

moles HNO3 = 0.03042 / 1

= 0.03042 moles HNO3

Therefore:

M ( HNO3 ) = n / volume ( HNO3 )

M ( HNO3 ) = 0.03042 / 0.0425

M ( HNO3 ) = 0.715 M

5 0

3 years ago

The hydrogen ion concentration, [H+], in a certain cleaning compound is left bracket Upper H Superscript plus Baseline right

labwork [276]

Answer: The pH of the cleaning compound is 10.44

Explanation:

pH is defined as the negative logarithm of hydrogen or hydronium ion concentration that are present in a solution.

The equation representing pH of the solution follows:

$pH=-\log[H^+]$

We are given:

$[H^+]=3.6\times 10^{-11}$

Putting values in above equation, we get:

$pH=-\log(3.6\times 10^{-11})$

$pH=10.44$

Hence, the pH of the cleaning compound is 10.44

8 0

3 years ago

Structure of 2,3-dimethylheptane

olga55 [171]

Answer:

Please find the structure of the hydrocarbon in the attachment section and details on how to draw it in the explanation section.

Explanation:

Heptane is a member of the alkane group, which has a general formula of CnH2n+2. If n in heptane is 7, this means that the chemical formula for heptane will be C7H16 i.e.

= C7H2(7) + 2

= C7H14+2

= C7H16

C7H16 is the chemical formula for heptane, which is a linear hydrocarbon with 7 carbon atoms and 16 hydrogen atoms. However, in the name of the hydrocarbon compound given in the question: 2,3-dimethylheptane;

- Two methyl groups (CH3) has a substituted two hydrogen atoms specifically at carbon 2 and 3 respectively. Therefore, the new chemical formula of 2,3-dimethylheptane will be: C7H14(CH3)2

Please find the structural formula of the compound; 2,3-dimethylheptane as an attachment.

3 0

3 years ago

Oxygen is odorless and colorless. A. chemical property B. physical property

vovangra [49]

The answer is the first one A

4 0

3 years ago

Many of these prefixes you see everyday in different applications. A good example is

Nat2105 [25]

Answer: 8 x 10^12

Explanation:

The prefix tera means 10^12. Each byte is 8 bits, so a terabyte is 8 x 10^12 bits.

7 0

3 years ago