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3 years ago

What do non metals do when they ionize

1 answer:

4 0

will metal do is when they ionize they have relatively high energies.These atoms have large diameters. The outer electrons are relatively far from the nucleus. Metals tend to lose electrons and form positive ions.

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Which statements correctly describe light? (Select all that apply.)

Ainat [17]

Answer:

it says select all that apply hhh easy just select and apply the answer hhh

Explanation:

8 0

2 years ago

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Methane and sulfur react to produce carbon disulfide (CS₂), a liquid often used in the production of cellophane.

Anestetic [448]

Answer:

9 moles

Explanation:

The balanced chemical equation provided in this question is as follows:

2CH₄ + S₈ → 2CS₂ + 4H₂S

In accordance to the above balanced equation, 1 mole of sulphur (S8) produces 4 moles of hydrogen sulfide (H2S).

Therefore, if 2.25mol of S8 is used, 2.25 × 4 = 9 mol

9 moles of H2S is produced.

6 0

3 years ago

Which of the following materials is useful for making molds because it has a low melting point?

inessss [21]

Molds are created to achieve a specific design of a material. These materials either came from a process of having a higher or lower temperature. Therefore, the molder must have thermal resistant properties. Low melting points means that the material to be shaped came from a cooler process. Wood and metal have higher thermal conductivity and therefore can easily be cooled. The wax can turn really hard and can be unbreakable when present in colder materials due to the lipids present in it. Clay however can become a mold because of its low melting point.

7 0

3 years ago

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If 0.089 grams of KI is dissolved in 500g of H2O, what is the concentration of the resulting solution in parts per million?

frez [133]

Answer:

The concentration of the resulting solution in parts per million is 177.97

Explanation:

Parts per million (ppm), is a unit of measure for concentration that refers to the number of units of the substance per million units of the set.

The concentration in parts per million expressed in mass / mass is calculated by dividing the mass of the solute (ms) by the mass of the solution (md, sum of the mass of the solute and the mass of the solvent), both expressed in the same unit and multiplied by 10⁶ (1 million).

$ppm=\frac{ms}{md} *10^{6}$

So, being:

ms: 0.089 grams of KI

md: 0.089 grams of KI + 500 grams of H₂O= 500.089 grams

Replacing:

$ppm=\frac{0.089 grams}{500.089 grams}*10^{6}$

ppm= 177.97

The concentration of the resulting solution in parts per million is 177.97

6 0

3 years ago

What is the oxidation number for S in the compound SO3? (Recall that O has an oxidation number of –2.) A. 0

Snezhnost [94]

Answer:

$\boxed {\boxed {\sf +6}}$

Explanation:

A compound must have a net charge of 0. The charges have to balance each other out and equal 0.

We have the compound sulfur trioxide with a chemical formula of SO₃.

Oxygen (O) has an oxidation state of -2, which means it will have a charge of -2 in the compound. However, note there is a subscript after the O in the chemical formula. Therefore, there are 3 oxygen atoms in the compound and each one has a charge of -2. The oxygen has an overall charge of -6 because 3*-2 = -6.

There is only one atom of sulfur (there is no subscript, so a 1 is implied). It has to balance out the -6 charge of the oxygen atoms, so it must be +6.

The oxidation number for sulfur is +6 in the compound sulfur trioxide.

4 0

3 years ago

Read 2 more answers