Ask question

Ask question

All categories

3 years ago

5

14. Have your thoughts about the Great Pacific Garbage Patch changed since we first talked about it earlier in the year? Do you

think it is a major concem in the world today? Yes i think...... explain its a opinion question

1 answer:

Llana [10]3 years ago

5 0

Answer:

sowwi I just need the points :(

You might be interested in

Define Condensation .

ozzi

Answer:

Condensation is the change of the physical state of matter from the gas phase into the liquid phase.

6 0

3 years ago

Read 2 more answers

A pharmacist wishes to strengthen a mixture from 10%alcohol to 30% alcohol. How much pure alcohol should be added to 7 liters of

Tomtit [17]

Answer:

2 litres of pure alcohol will be added to make the overall concentration of 9 litres of mixture as 30%.

Explanation:

Suppose x is the number of litres added to the 10% mixture than the quantity of new mixture is given as below

$n_{old}=7$ litres
$n_{new}=7+x$ litres

Also the quantity of alcohol is given as

$q_{old}=10 \% \, of \, 7 \, litres =0.7$

$q_{added}=x$

$q_{new}= 30 \% \,of \,new\, quantity = 0.3(7+x)$

Now the equation is as

$q_{old}+q_{added}=q_{new}\\0.7+x=0.3(7+x)\\0.7+x=2.1+0.3x\\x-0.3x=2.1-0.7\\0.7x=1.4\\x=2 \, litres$

So 2 litres of pure alcohol will be added to make the overall concentration of 9 litres of mixture as 30%.

8 0

3 years ago

Calculate the number of atoms in 3 moles of carbon atoms

creativ13 [48]

Answer:

1,806,000,000,000,000,000,000,000 atoms.

Explanation:

1 mol of anything is 6.022*10^23 units

1 mol carbon atoms = 6.022*10^23 carbon atoms

3 mol carbon atoms = 3*6.022*10^23 = 1.8*10^24 atoms

Correctly - your answer should have only 1 significant digit: 2 * 10^24 atoms.

6 0

2 years ago

Plzz tell me the answer u need help im kinda confused

djverab [1.8K]

Hi
I think it’s B
Hopefully this helps!!

8 0

3 years ago

In Europe, nutritional information is given in kilojoules (kJ) instead of nutritional calories (1 nutritional calorie = 1 kcal).

Alinara [238K]

There would be 68 calories per cup

8 0

3 years ago

Read 2 more answers