3 years ago

How could having a knowledge of density be useful in everyday life

2 answers:

6 0

Most people cook everyday you use a measuring cup to measure liquids and solids or powders. You use density when filling a glass of water if your dehydrated which glass do you choose the large cup or the small cup.

aleksklad [387]3 years ago

5 0

Density is found in everyday objects.

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What is the concentration of H+ ions at a pH = 11?

natta225 [31]

Answer:

$\huge 1 × {10}^{-11} \: \: M$

Explanation:

The pH of a solution can be found by using the formula

$pH = - log [ {H}^{+} ]$

Since we are finding the H+ ions we find the antilog of the pH

So we have

$11 = - log({H}^{+}) \\ {H}^{+} = {10}^{ - 11}$

We have the final answer as

$1 × {10}^{-11} \: \: M$

Hope this helps you

6 0

3 years ago

If atmospheric pressure suddenly changes from 1.00 atm to 0.892 atm at 298 k, how much oxygen will be released from 4.40 l of wa

garri49 [273]

Henry's law constant for oxygen is 0,0013 mol/L·atm. Air has 21,0% oxygen.
concentration of oxygen at 1 atm: 0,0013 mol/L·atm · 0,21 · 1 atm = 0,000273 mol/l.
concentration of oxygen at 1 atm: 0,0013 mol/L·atm · 0,21 · 0,892 atm = 0,000243 mol/l.
difference in concentration: 0,000273 - 0,000243 = 0,00003 mol/L.
n(oxygen) = 0,00003 mol/L · 4,40 L = 0,000132 mol.

4 0

3 years ago

What is the pOH value of 0.0000877 M HCL

ki77a [65]

Answer:

pOH=9.9

Explanation:

pH=-log[H+]= -log[0.0000877]

=4.06

pOH+ pH=14

pOH=14-4.06= 9.91

7 0

3 years ago

What is an amu? Will give Brainliest!

pantera1 [17]

Answer: Amu is an atomic mass unit.

8 0

3 years ago

Density is anything that has mass and takes up space. A. True B. False

sergij07 [2.7K]

True because it is correct

4 0

3 years ago

Read 2 more answers