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trapecia [35]
3 years ago
12

Which of the following is an example of a situation where work occurs?

Chemistry
1 answer:
SIZIF [17.4K]3 years ago
4 0

Answer:

D is the answer may be. I'm not sure.

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How many mL of 0.506 M HClare needed to dissolve 9.85 g of BaCO3?
Blababa [14]

Answer:

197mL of 0,506M HCl

Explanation:

The reaction of HCl + BaCO₃ is:

BaCO₃(s) + 2HCl → BaCl₂(aq) + CO₂ + H₂O.

The moles of BaCO₃ in 9,85 g are:

9,85 g of BaCO₃ × \frac{1mol}{197,34 g} = <em>0,0499 moles of BaCO₃</em>

As 1 mol of BaCO₃ reacts with two moles of HCl, for a complete reaction of BaCO₃ to dissolve this compound in water you need:

0,0499 moles of BaCO₃ × \frac{2molHCl}{1molBaCO_{3}} =<em> 0,0998 moles of HCl</em>

If you have a 0,506M HCl, you need to add:

0,0998 moles of HCl× \frac{1L}{0,506moles} = 0,197 L ≡ 197mL

I hope it helps!

8 0
3 years ago
What is the composition of carbohydrates
s344n2d4d5 [400]
Answer - A carbohydrate is a naturally occurring compound, or a derivative of such a compound, with the general chemical formula Cx(H2O)y, made up of molecules of carbon (C), hydrogen (H), and oxygen (O). Carbohydrates are the most widespread organic substances and play a vital role in all life. hopes this helps
8 0
3 years ago
HELP URGENT PLS!1!! In what direction and how many spaces must you move the decimal point to make the following conversion?
Mama L [17]

To convert from L to ml, we move three spaces to the right and the decimal place moves three places.

Our task here is to convert 600 L to mL. we have to remember that to convert from L to ml, we have to multiply the value in L by 1000

In other words, the value 1000 is known as the conversion factor.

When we do this, we move the decimal place three places to the right to have 600000.00mL

For more about conversion factors, see:

brainly.com/question/8512113

6 0
3 years ago
Does anyone have any tips on studying the 17 bones for the test on Monday?
LUCKY_DIMON [66]
Whenever I have tests like these, I make a quizlet with each part zoomed in and then answer it that way.
7 0
3 years ago
Covalent bonds are formed from the sharing of valence electrons.<br> • true or false
IRINA_888 [86]

Answer:

true

Explanation:

it ture because it true

3 0
3 years ago
Read 2 more answers
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