1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kompoz [17]
3 years ago
11

EASY POINTS GIVEN! WILL MARK BRAINLIEST:)

Chemistry
2 answers:
alexgriva [62]3 years ago
6 0

Answer:

the first oneeeeeeeee

Kitty [74]3 years ago
5 0

Answer:

faxs

Explanation:

You might be interested in
Who believed that a grain of sand could be divided indefinitely?
Ilya [14]

Answer:

Democritus

Explanation:

4 0
3 years ago
How much water, in grams, can be made from 1.03 x <img src="https://tex.z-dn.net/?f=10%5E%7B24%7D" id="TexFormula1" title="10^{2
krok68 [10]

Answer:

30.8 g of water are produced

Explanation:

First of all we need the equation for the production of water:

2H₂ + O₂ → 2H₂O

2 moles of hydrogen react with 1 mol of oxygen in order to produce 2 moles of water.

As we assume, the oxygen in excess, we determine the moles of H₂.

1.03ₓ10²⁴ molecules . 1 mol/ 6.02ₓ10²³ molecules = 1.71 moles

Ratio is 2:2, so 1.71 moles will produce 1.71 moles of water

Let's convert the moles to mass: 1.71 mol . 18g / 1mol = 30.8 g of water are produced

5 0
3 years ago
When 70.4 g of benzamide (C7H7NO) are dissolved in 850. g of a certain mystery liquid X, the freezing point of the solution is 2
Arlecino [84]

Answer:

1.62

Explanation:

From the given information:

number of moles of benzamide  =\dfrac{70.4 \ g}{121.14 \ g/mol}

= 0.58 mole

The molality = \dfrac{mass \ of \ solute (i.e. \ benzamide )}{mass \ of \ solvent  }

= \dfrac{0.58 }{0.85 }

= 0.6837

Using the formula:

\mathbf {dT  = l   \times  k_f  \times m}

where;

dT = freezing point = 27

l = Van't Hoff factor = 1

kf = freezing constant of the solvent

∴

2.7 °C = 1 × kf ×  0.6837 m

kf = 2.7 °C/ 0.6837m

kf = 3.949 °C/m

number of moles of NH4Cl = \dfrac{70.4 \ g}{53.491 \  g /mol}

= 1.316 mol

The molality = \dfrac{1.316 \ mol}{0.85 \ kg}

= 1.5484

Thus;

the above kf value is used in determining the  Van't Hoff factor for  NH4Cl

i.e.

9.9 = l × 3.949 × 1.5484 m

l = \dfrac{9.9}{3.949 \times 1.5484 \ m}

l = 1.62

5 0
2 years ago
Do all objects emit electromagnetic waves?
kherson [118]

Answer:

no, not all objects emit electromagnet waves.

Explanation: because lets say the object is carpet it has no magnetic waves in it so not all objects do.

6 0
3 years ago
2.<br> An alkane has at least on C=C<br> bond.<br> ut of<br> Select one:<br> O True<br> O False
garik1379 [7]
I think it’s false?????
8 0
3 years ago
Other questions:
  • Alex saw a rusty old car in an abandoned lot. Because he had recently read about chemical reactions, he began to wonder how the
    14·1 answer
  • Using the periodic table and your knowledge of atomic structure. Would Carbon-14 have more, less or the same number of neutrons
    11·2 answers
  • Which word describes AH for exothermic reactions?<br> O negative<br> O small<br> positive<br> O zero
    12·1 answer
  • What would happen if Phosphorus disappeared?
    10·1 answer
  • Area immediately surrounding a hazardous material incident which extends far enough to protect personnel outside the zone from c
    14·1 answer
  • If a molecule has four hybrid sp3 orbitals, it can be concluded that the molecule has a
    5·1 answer
  • PLEASE ANSWER FAST!!!!! Consider this hypothesis statement. "If the number of hours a student studies increases, then the studen
    9·1 answer
  • Plz help ASAP i will give brainlists
    14·1 answer
  • Ammonium phosphate NH43PO4 is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric a
    11·1 answer
  • Explain the difference between qualitative and quantitative properties.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!