3 years ago

A balloon starts off with 0.00035 moles of air and has a volume of 0.0081

Chemistry

1 answer:

Temka [501]3 years ago

8 0

Answer:

0.0648 mols

Explanation:

You might be interested in

in the reaction mgcl2 + 2koh mg(oh)2 + 2kcl, if 3 moles mgcl2 are added to 4 moles koh what determines how much mg(oh)2 is made

otez555 [7]

Every mole of MgCl2 reacts with 2 moles of KOH, therefore the 4 moles of KOH will only react with 2 moles of MgCl2, making it the limiting reagent and therefore KOH determines how much Mg(OH)2 is produced.

6 0

3 years ago

Read 2 more answers

which tool was mostly likely used in a procedure if the lab report shows that approximately 300 ml of water was used

DiKsa [7]

it is most likely a beaker, beacuse 300ml is quite a large volume. Otherwise, it would be a measuring cylinder or pippette

7 0

3 years ago

What is the empirical formula of a substance that contains 5.28 g of c, 0.887 g of h, and 3.52 g of o?

kicyunya [14]

Not sure but I think it is C2H4O

8 0

3 years ago

Read 2 more answers

650. J is the same amount of energy as A. 155 cal. B. 2720 calC. 650 cal.D. 1550 cal.

sladkih [1.3K]

Answer:

$A\text{ : 155 cal}$

Explanation:

Here, we want to convert J to cal

Mathematically:

$1\text{ cal = 4.186 J}$

Thus, to get our answer in cal, we divide the value given by 4.186

We have that as:

$\frac{650}{4.186}\text{ = 155 cal}$

5 0

1 year ago

after 252 days, a 12.0-g sample of the radioisotope scandium-46 contains only 1.5 g of the isotope. what is the half-life of sca

wolverine [178]

12➡6➡3➡1.5
① ② ③
3 half life = 252
half life = 84days

7 0

3 years ago