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Nitrogen and hydrogen react to produce ammonia.

Doss [256]

Answer:

yep yep yep yep yep yep yep yep yep yep so cool yep

yep

yel

yep

ype

yl

yrdvt

f4ef

te

g

5

ey

rw

f

t

e

c

t

y

r

e

s

f

t

4

e

d

g

t

r

e

f

r

e

f

r

e

Explanation:

nr

e

t

y

e

f

r

6 0

3 years ago

15.0 mL of an unknown clear liquid is added to a 50 mL graduated cylinder. The mass of the liquid is determined to be 12.7 grams

sveticcg [70]

Answer:

$\boxed {\tt A. \ d=0.85 \ g/mL}$

Explanation:

Density is found by dividing the mass by the volume.

$d=\frac{m}{v}$

The mass of the liquid is 12.7 grams.

We know that 15 mL of this liquid was added to a 50 mL graduated cylinder. Therefore, the volume is 15 mL. The 50 mL is not relevant, it only tells us about the graduated cylinder.

$m= 12.7 \ g\\v= 15 \ mL$

Substitute the values into the formula.

$d=\frac{12.7 \ g}{ 15 mL}$

Divide.

$d=0.846666667 \ g/mL$

Round to the nearest hundredth. The 6 in the tenth place tells us to round the 4 to a 5.

$d \approx 0.85 \ g/mL$

The density of the liquid is about 0.85 grams per milliliter and choice A is correct.

4 0

3 years ago

Is classified as a substance <br><br> A. Elements and compound <br><br> B.mixtures

Vika [28.1K]

Pretty sure it’s Mixture if I’m not wrong

8 0

3 years ago

Why the partial charge on H in HF is more positive than the partial charge on H in HBr

erik [133]

Because fluorine has a higher electronegativity

8 0

3 years ago

How many lone pairs does CO2 have? Does it have Single bonds or Double bonds? Does it obey the octet rule?

Aleks04 [339]

The molecule CO2 have 2 lone pairs located in the oxygen atoms. It has two double bonds also connecting carbon atom to the two oxygen atoms. It does obey the octet rule so the atoms need 8 electrons in each of them that is why electrons are shared.

3 0

3 years ago