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
Pavlova-9 [17]
4 years ago
14

A hydrate of CoCl2 with a mass of 6.00 g is heated strongly. after cooling the mass the anhydrate is 3.27g

Chemistry
2 answers:
Oduvanchick [21]4 years ago
7 0

Answer : The amount of water lost from the hydrate is 2.73 grams.

Explanation :

Let us assume that we are calculating the amount of water lost from the hydrate.

As we are given:

Mass of hydrate of CoCl_2 = 6.00 g

Mass of anhydrate = 3.27 g

Mass of water lost = Mass of hydrate of CoCl_2 - Mass of anhydrate

Mass of water lost = 6.00g - 3.27g

Mass of water lost = 2.73 g

Hence, the amount of water lost from the hydrate is 2.73 grams.

Brums [2.3K]4 years ago
6 0
We are given with a hydrate with a mass of 6 grams and after heating the mass and cooling afterward, the mass went down to 3.27 grams. The amount of water in the hydrate thus is 6-3.27 g or 2.73 grams.That is equivalent to 45.5 percent by mass water.
You might be interested in
The first evidence supporting the theory of continental drift was ____.
Elina [12.6K]
<span>The first evidence supporting the theory of continental drift was the fitting together of neighboring continents like jigsaw puzzle pieces.




Do you need an explanation? </span>
4 0
4 years ago
Read 2 more answers
Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the various organs of the body. I
Aneli [31]

Answer : The number of iron atoms present in each red blood cell are, 1.077\times 10^9

Explanation :

First we have to calculate the moles of iron.

\text{Moles of iron}=\frac{\text{Mass of iron}}{\text{Molar mass of iron}}=\frac{2.90g}{55.85g/mole}=0.0519moles

Now we have to calculate the number of iron atoms.

As, 1 mole of iron contains 6.022\times 10^{23} number of iron atoms

So, 0.0519 mole of iron contains 0.0519\times 6.022\times 10^{23}=3.125\times 10^{22} number of iron atoms

Now we have to calculate the number of iron atoms are present in each red blood cell.

Number of iron atoms are present in each red blood cell = \frac{\text{Number of iron atoms}}{\text{Total number of red blood cells}}

Number of iron atoms are present in each red blood cell = \frac{3.125\times 10^{22}}{2.90\times 10^{13}}

Number of iron atoms are present in each red blood cell = 1.077\times 10^9

Therefore, the number of iron atoms present in each red blood cell are, 1.077\times 10^9

6 0
3 years ago
When nitrogen and magnesium form an ionic bond, what is the formula? (2 points) Select one: a. N3Mg2 b. N2Mg3 c. Mg2N3 d. Mg3N2
notka56 [123]

Answer is: d. Mg3N2.

Mg₃N₂ is magnesium nitride.

Nitrogen (nonmetal) in this chemical compound has oxidation number -3 and magnesium (metal) has oxidation number +2.

Smallest common multiple for 3 and 2 is 6.

number of nitrogen atoms = 6 ÷ 3.

number of nitrogen atoms = 2, there are two nitrogen atoms.

number of magnesium atoms: 6 ÷ 2.

number of magnesium atoms = 3.

7 0
3 years ago
Which one of the following chemicals does the body generate during regular exercise?
Alexandra [31]
The answer is actually C. endorphins. during regular exercise, the pituitary gland and central nervous system produce endorphins
4 0
4 years ago
87,036 mi Express your answer as an integer.
bezimeni [28]
Hzhhsbdhshhwhxhudigdhgdyd
4 0
4 years ago
Other questions:
  • An igneous rock with large crystals cooled
    12·2 answers
  • What are downbursts?
    8·1 answer
  • The temperature in Kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. What is the f
    8·1 answer
  • Which best describes the relationship between the direction of energy and wave motion in a transverse wave?
    10·1 answer
  • F
    5·1 answer
  • How many electron shells/orbitals will be around the nucleus of an atom of aluminum?
    11·2 answers
  • Is the following equation balanced correctly?<br><br> NaCl + H2 Na + 2HCl
    14·1 answer
  • Match the landform to its description.
    12·2 answers
  • I need the 3 questions !!! About Rubidium (Rb) <br><br> ASAP PLEASE DUE IN LIKE 20 min
    13·1 answer
  • Question 2 of 5
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!