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tensa zangetsu [6.8K]
3 years ago
5

What is the mass of an object with a volume of 2.0 mL and a density of 28.8 g/mL?

Chemistry
1 answer:
Nadusha1986 [10]3 years ago
6 0

Answer:

your answer is really 308ml

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48 points
ahrayia [7]

Answer:

1. Matter

2. Mass

3. Space/Volume

4. Substances

5. Atomic

6. Positively

7. Neutrally charged

8. Negatively

9. Atomic

10.  Nucleus

11.

12. Atomic

13. Ions

14. Cation

15. Anion

16. Isotopes

6 0
3 years ago
The molar mass of h2o is 18.01 g/mom . The molar mass of o2 is 32.00 g/moo .what mass of h2o on grams must react to produce 50.0
Julli [10]
Oxygen can be obtained from water using electrolysis process as follows:
2 H2O .............> 2H2 + O2

It is given that: 
molar mass of water = 10.01 grams and molar mass of O2 = 32 grams

From the balanced chemical equation, we can conclude that:
2 moles of water produce 1 mole of oxygen
2 x 18.01 = 36.02 grams of water produce 32 grams of oxygen.

To calculate how many grams of water must react to produce 50 grams of oxygen, we can use cross multiplication as follows:
mass of required water = 56.28125 grams
4 0
3 years ago
ASAP
Nadya [2.5K]

Answer:

12 %

Explanation:

Produces 15 J of work for input 125 J

15/125 * 100% = 12%

5 0
2 years ago
A solution contains 0.115 mol h2o and an unknown number of moles of nacl. the vapor pressure of the solution at 30°c is 25.7 tor
Valentin [98]
According to Raoult's low:
We will use this formula: Vp(Solution) = mole fraction of solvent * Vp(solvent)
∴ mole fraction of solvent = Vp(Solu) / Vp (Solv)
when we have Vp(solu) = 25.7 torr & Vp(solv) = 31.8 torr 
So by substitution:
∴ mole fraction of solvent = 25.7 / 31.8 =0.808 
when we assume the moles of solute NaCl = X 
and according to the mole fraction of solvent formula:
mole fraction of solvent = moles of solvent / (moles of solvent + moles of solute)
by substitute:
∴ 0.808 = 0.115 / (0.115 + X)
 So X (the no.of moles of NaCl) = 0.027 m
8 0
3 years ago
Hot water deep within earth can _______ minerals and transport them someplace else.
Vedmedyk [2.9K]

Answer:

Dissolve

Hope this helps!

Explanation:

5 0
2 years ago
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