4 years ago

Distinguish between heat and temperature

1 answer:

8 0

Heat is defined as the total kinetic energy of all the atoms and molecules that make up a substance.

Temperature is a measure of the average kinetic energy of the individual atoms or molecules in a substance.

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Which type of glassware would most accurately deliver a 15.00 ml liquid sample?

faltersainse [42]

A 15.00 mL pipet. As a pipet is more accurate than a buret.

8 0

3 years ago

Help please I don't understand

e-lub [12.9K]

Try looking at the question a little bit harder.

3 0

3 years ago

What is the molarity of a NaOH solution if 28.2 mL of a 0.355 M H2SO4 solution is required to neutralize a 25.0-mL sample of the

Anni [7]

Answer:

A) 0.801

Explanation:

The reaction that takes place is:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

First we calculate the H₂SO₄ moles that reacted:

0.355 M * 28.2 mL = 10.011 mmol H₂SO₄

Now we convert H₂SO₄ moles to NaOH moles:

10.011 mmol H₂SO₄ * $\frac{2mmolNaOH}{1mmolH_2SO_4}$ = 20.022 mmol NaOH

Finally we calculate the molarity of the NaOH solution:

20.022 mmol NaOH / 25.0 mL = 0.801 M

So the answer is option A.

3 0

3 years ago

The volume of gas occupied 240.0ml when the pressure is 1.20 atm what volume at constant pressure.will the gas occupies when the

Marizza181 [45]

Answer:

334.89 ml

Explanation:

V2 = V1P1/P2

V2 = 240×1.2/0.86

V2 = 334.89 ml

7 0

3 years ago

A reddish layer of rust can form on old iron nails and bikes. In this chemical reaction, iron reacts slowly with oxygen in the a

Molodets [167]

Answer:

Iron slowly reacts with oxygen and forms rust. In this case, the reactants are iron and oxygen. The product is rust, or iron oxide. The chemical equation looks like this:

Explanation:

iron + oxygen → iron oxide

5 0

3 years ago

Read 2 more answers