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2 years ago

50 PTS!!!!! Please answer without links!

Chemistry

1 answer:

monitta2 years ago

7 0

Decomposition is the answer to your question.

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The reaction 2k(s) + br2(l) → 2kbr(s) is a(n) ______________ reaction.

Zinaida [17]

An oxidation reaction

5 0

3 years ago

Read 2 more answers

Is NaOH an acid or base

ExtremeBDS [4]

Answer:

Explanation:

4 0

3 years ago

A sample of chromium oxide is 76.5% chromium by weight. what is the simplest formula of the oxide?

nikklg [1K]

CrO as we need to find the empirical formula (simplest formula) not molecular formula

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3 years ago

Vinegar is an aqueous solution of acetic acid, ch3cooh. a 5.00 ml sample of a particular vinegar requires 26.90 ml of 0.175 m na

Fed [463]

The molarity of acetic acid in the vinegar is 0.94 M

calculation

Step 1: write the balanced equation between CH3COOH + NaOH

that is CH3COOH + NaOH → CH3COONa + H2O

step 2 : find the moles of NaOH

moles =molarity x volume in L

volume in liters = 26.90/1000=0.0269 l

moles = 0.175 mol /L x 0.0269 L =0.0047 moles of NaOH

Step 3: use the mole ratio to find moles of CH3COOH

that is the mole ratio of CH3COOH: NaOH is 1:1 therefore the moles of CH3COOH is =0.0047 moles

Step 4: find the molarity of CH3COOH

molarity = moles/volume in liters

volume in liter = 5.00/1000 =0.005 l

molarity is therefore=0.0047 moles/ 0.005 l = 0.94 M

4 0

3 years ago

Why do gases act more ideal at lower pressures?

kicyunya [14]

Answer:

Gases act more ideal at lower pressure beacuse the attractive forces between molecules will decrease or become less significant compared to the empty space between them.

Explanation:

Generally, a gas behaves more like an ideal gas at higher temperature and lower pressure as the potential energy due to intermolecular forces becomes less significant compared with the particles "kinetic energy" and the size of the molecules become less significant compared to the empty space between them.

Attractive forces between molecules, decrease the pressure of a reak gas, slowing the molecules and reducing collisions with the walls.The higher the value of a gas, the greater the attraction between molecules and the more easily the gas will compress.

<h2>HOPE IT HELPS MUCH</h2>

answered by: John Glenly Pillazo Mahusay

5 0

3 years ago