All categories

3 years ago

MAX POINTS! BRAINLIEST TO BEST ANSWER

Chemistry

2 answers:

IceJOKER [234]3 years ago

8 0

How much NH4Cl can you dissolve in 200 g of water at 90° to make a saturated solution?

C) 140

kaheart [24]3 years ago

7 0

Answer:

you can dissolve 140 NH4CI in 200 g of water at 90° to make a saturated solution

so the answer is C

~batmans wife dun dun dun.....

You might be interested in

how would you determine which layer is organic in a separatory funnel if the density of the soltuions were unkown

ELEN [110]

Answer:

yea ricorico

Explanation:

5 0

3 years ago

The formula H2O2 is an example of *

saveliy_v [14]

Answer: Molecular formula

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

Ionic formula is the simplest chemical formula which depicts the whole number of atoms of each element present in an ionic compound.

Molecular formula of hydrogen peroxide is $H_2O_2$ . Empirical formula of hydrogen peroxide is OH.

8 0

3 years ago

Is 2OH−+Ca2+−>2Ca(OH)2 balanced

wariber [46]

Answer:

No.

Explanation:

No. There is 1 atom of Ca on the left and 2 Ca's on the right and 2 OH's on the left and 4 on the right.

The balanced equation is:

4OH- + 2Ca2+ ----> 2Ca(OH)2.

3 0

3 years ago

Read 2 more answers

If 5.0 kJ of energy is added to a 15.5-g sample of water at 10.°C, the water is Group of answer choices

BaLLatris [955]

Answer:

The water is completely vaporized at this stage.

Explanation:

The complete question is

If 5.0 kJ of energy is added to a 15.5-g sample of water at 10.°C, the water is

-boiling

-completely vaporized

-frozen solid

-decomposed

-still a liquid

Energy added = 50 kJ = 50000 J

mass of water = 15.5 g = 0.0155 kg

temperature of water = 10 °C

We know that the energy posses by a mass of water at a given temperature is given as

H = mcT

where H is the energy possessed by the mass of water

m is the mass of the water

c is the specific heat capacity of water = 4200 J/ kg- °C

T is the temperature of the water

substituting values, the energy of this amount of water is

H = 0.0155 x 4200 x 10 = 651 J

If 50 kJ is added to the water, the energy increases to

50000 J + 651 J = 50651 J

Temperature of this water at this stage will be gotten from

H = mcT

we solve for the new temperature

50651 = 0.0155 x 4200 x T

50651 = 65.1 x T

T = 50651/65.1 = 778.05 °C

This temperature is well over 100 °C, which is the vaporization temperature of water, but less than 3000 °C for its molecules to decompose.

3 0

3 years ago

How did mendeleev orginally organize the element in his periodic table

horrorfan [7]

From increasing atomic mass. He also made groups and periods.

4 0

3 years ago

Read 2 more answers