Ask question

Ask question

All categories

3 years ago

13

Which of the following phases of matter can transfer heat by convection? a. liquids b. solids c. gases d. both a and b e. both a

and c

1 answer:

In-s [12.5K]3 years ago

8 0

Answer: e. Both a and c

Heat in both liquids and gases is transferred by convection, whereas in solids it is by conduction.

Hope it helped!

You might be interested in

Hi!!! Please help with six science questions!!!!! 60 points and brainliest!

Shkiper50 [21]

1. A
2. base
3. strong ones have more h30 weak ones have more OH
4. strong ones have more OH weak ones have more H30
5. <span>One of the main differences between acids and bases is that acids have a pH that is less than 7 and bases have a pH that is greater than 7. When dissolved in water, acids are substances that will cause the concentration of hydrogen ions (H+) to increase. Bases, when dissolved in water, will instead cause the number of hydroxide ions (OH-) to increase.6.Idk </span>

3 0

3 years ago

Read 2 more answers

Be + O2 --> BeO<br><br> Balance this and what's the type of reaction?

max2010maxim [7]

Answer:

2Be + O2 = 2BeO

its a synthesis

Explanation:

7 0

2 years ago

What is the element name for K2S

aliya0001 [1]

~The picture below shall help :)
-Hope this helped ^_^

5 0

3 years ago

Read 2 more answers

The EPA scientist measures the pH level in one area of a river to be lower than normal and writes that a pollutant must have bee

shutvik [7]

Its an example of inference.

4 0

3 years ago

Read 2 more answers

A chemistry graduate student is given 500. mL of a 0.20 M chloroacetic acid (HCH2ClCO2) solution. Chloroacetic acid is a weak ac

zhenek [66]

Answer:

12 g of choloracetic acid

Explanation:

The buffer equilibrium is:

HCH₂ClCO₂ ⇄ CH₂ClCO₂⁻ + H⁺

pka= -log ka =

Ka: 1,3x10⁻³ = [CH₂ClCO₂⁻] [H⁺] / [HCH₂ClCO₂]

By Henderson-Hasselbalch equation:

pH = pka + log₁₀ [A⁻] / [HA]

3,01 = 2,89 + log₁₀ [A⁻] / [HA]

1,318 = [A⁻] / [HA]

As molar concentration of chloroacetic acid (HA) is 0,20M

[A⁻] = 0,26 mol/L

The volume is 500 mL ≡ 0,5 L

0,26mol/L × 0,5 L = 0,13 moles of chloroacetic acid. In grams:

0,13 mol × (94,5g / 1mol) = <em>12 g of choloracetic acid</em>

<em></em>

I hope it helps!

3 0

3 years ago