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Vinvika [58]
3 years ago
9

An ore is a combination of a metal and another element. TRUE OR FALSE

Chemistry
1 answer:
4vir4ik [10]3 years ago
4 0

Answer:

Explanation:

ℎ ℎ

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Is 4Na2CO3 a mixture why or why not?
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In the United States today, no federal law prohibits human cloning, either for purposes of reproduction or for purposes of biomedical research.

Explanation:

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1 year ago
Molar mass of C^6H^12O^6
jolli1 [7]

Answer:

The molar mass of C6 H12 O6 is 180.15588 g/mol.

Explanation:

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3 years ago
Choose the answer that takes place when a liquid absorbs heat energy without increasing its temperature.
just olya [345]
When a liquid absorbs heat energy without increasing its temperature is because it is using the absorbed heat for the change of phase from liquid to vapor. This is call vaporization. Vaporization requires energy because the molecules have to overcome the interaction that keeps them close to their neighbors in the liquid.So, <span>the answer is the option B.) it vaporizes.</span>
3 0
3 years ago
Create a graphic organizer of the water cycle.
aleksandr82 [10.1K]

Answer:

i will do it brainlist plz

Explanation:

5 0
3 years ago
2.00 g of an unknown volatile liquid was placed in a flask with a total volume of 265.0 mL. The cover of the flask has only a pi
Zarrin [17]

Answer:

165.52 g/mol

Explanation:

Upon temperature was raised to 100 C part of the initial mass of liquid is gas, exactly: 2.00-0.581 = 1.419 g.  This gas occupy a volume of approximately 265 mL, its pressure of 752 mm Hg and its temperature is 100 C. Assuming that this gas behaves as gas ideal we can estimate the molecular weight M_Wtaking into account tha gas ideal law:

PVM_{W}=RTm  with R= 0.082 atm L/(mol K)

or M_{W}=\frac{RTm}{PV}

Before using of the formula, we need convert volume units to L (1L=1000 mL) pressure to atm (1 atm=760 mmHg) and temperature to K (K=273+C).

265/1000 = 0.265 L

752/760=0.989 atm

273+100=373 K

Finally, replacing in the formula

\frac{0.082*1.419*373}{0.989*0.265}=165.52 g/mol

 

4 0
3 years ago
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