What is the pH of a solution?

Chemistry

1 answer:

Scrat [10]3 years ago

5 0

Answer:

D. A measure of the acidity of the solution

Explanation:

pH is a measure of how acidic or basic a solution is, and is measured on a scale from 0-14, where 7 is neutral, anything less than 7 is acidic, and anything more than 7 is basic.

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How much heat is absorbed during production of 112 g of NO by the combination of nitrogen and oxygen?

djverab [1.8K]

From the given chemical equation we see that 43 kcal of energy is needed for every 2 moles of NO. First let us calculate the moles of NO with a molar mass of 30 g/mol.

moles NO = 112 g / (30 g/mol) = 3.73 mol

So the total heat absorbed is:

heat = (43 kcal / 2 mol) * 3.73 mol

7 0

3 years ago

Proper significant figure: 27.01 + 14.369

Paul [167]

Answer:

<h2>put the bigger number on top then add </h2>

Explanation:

41.369

8 0

3 years ago

Describe the particles that make up a pure substance

Anni [7]

Answer:

Each element consists of indivisible, minute particles called atoms.

All atoms of a given element are identical.

Atoms of different elements have different masses.

Explanation:

8 0

3 years ago

Lewis structure for nitrogen triiodide, NI(3)

Rasek [7]

Answer:

Lewis structure for nitrogen triiodide, $NI_3$ is given in the attachment.

Explanation:

Given:

The given compound is Nitrogen triiodide. In which 1 atom of Nitrogen combines with 3 atoms of Iodine. Both Nitrogen and Iodine are non-metals,So they form covalent bond by sharing of electrons.

The electron configuration of Nitrogen and Iodine is given below;

$N(7) = 1s^2,2s^22p^3\\I(53) = 1s^2,2s^22p^6,3s^23p^63d^{10},4s^24p^64d^{10},5s^25p^5$