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blondinia [14]
3 years ago
7

S Which could occur in a closed system?

Chemistry
1 answer:
ollegr [7]3 years ago
8 0

Answer:

Explanation:

i said answers is b

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Predict what the population of the United States will be in the year 2010
s344n2d4d5 [400]

Answer:

308.7 million

Explanation:

is my prediction

5 0
3 years ago
How do you convert from grabs to moles of a substance
Lorico [155]

The correct question is as follows:

How do you convert from grams to moles of a substance

1. Divide by the molar mass

2. Subtract the molar mass

3. Add the molar mass

4. Multiple by the molar mass

Answer: In order to convert from grams to moles of a substance divide by the molar mass.

Explanation:

The number of moles of a substance is the mass of substance in grams divided by its molar mass.

The formula to calculate moles is as follows.

Moles = \frac{mass}{molar mass}

This means that grams are converted to moles when grams is divided by molar mass.

Thus, we can conclude that in order to convert from grams to moles of a substance divide by the molar mass.

8 0
3 years ago
The density of copper is 8.9 g/cm3.If you have 90.0 grams of copper ,how much volume is your copper occupying
lesya692 [45]
D= m/v
90.0/8.9
V= 10.11235
V= 10 cm3
5 0
3 years ago
How many milliliters of 0.0510 m edta are required to react with 50.0 ml of 0.0200 m cu2 ?
krok68 [10]
Cu  ions plus EDTA2-   ->cu(EDTA)2-  plus 2H-
   number  of  moles  of  CU  ions  used  which is   equal to  molarity  multiplied  by    volume  in  litres
that  is  50xo.o2  divided  by 1000  that  is  0.001moles
Since  ratio  is  1:1  the  moles  of EDTA  is  also0.001moles
volume  of  EDTA  is  0.001  divided  by  0.0510m  which  is  0.0196  litres in  ml is  0.0196x1000  which  is  19.61ml
4 0
3 years ago
List at least two metric units that you used during the measurement activity to represent volume
Oliga [24]

Answer:

ml and cm3

Explanation:

millilitres and centimetres cubed or litres and metres cubed. Any unit of measuring liquid if the substance is a a liquid or a unit cubed

3 0
3 years ago
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