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
krok68 [10]
3 years ago
7

- calculate relative formula mass

Chemistry
1 answer:
nikklg [1K]3 years ago
8 0

Mg(NO3)2:-

\\  \sf \longmapsto \: 24u+2(14u+3\times 16u)

\\  \sf \longmapsto \: 24u+2(14u+48u)

\\  \sf \longmapsto \: 24u+2(62u)

\\  \sf \longmapsto \: 24u+(124u)

\\  \sf \longmapsto \: 148u

You might be interested in
2 2. The energy stored in a substance that can be released when the substance reacts. A. Mechanical Energy B. Thermal Energy C.
vichka [17]

Answer:

C. Chemical Energy

Explanation:

The energy that stored in the substance or in compounds is called chemical energy which released when the substance reacts.

A substance is made up of atoms and molecules and chemical energy is present in those atoms or molecules. When a chemical reaction takes place, these energy released from atoms and molecules.

Chemical energy can be released in the form of  thermal energy (heat) and mechanical energy (working ability).

Hence, the correct answer is "C. Chemical Energy".

4 0
3 years ago
What is the atomic mass of an element is equal to?
Tatiana [17]
Protons and Neutrons is what determines the atomic mass. I cannot further explain this answer, however, I hope I helped!
6 0
3 years ago
Read 2 more answers
According to the lewis dot structure shown here how many valence electrons does chlorine have?
liberstina [14]
According to the Lewis dot structure chlorine has seven valance electrons
8 0
3 years ago
What is the mass of 0.2 moles of ethanol​
Verdich [7]

Answer:

<u>Answer</u><u> </u><u>is</u><u> </u><u>9</u><u>.</u><u>2</u><u> </u><u>grams</u>

Explanation:

Molar mass of ethanol

{ \bf{CH _{3}CH_{2}OH}} = (12 \times 2) + (6 \times 1) + (16) \\  = 46 \: g

for moles:

{ \sf{1 \: mole \: of \: ethanol \: weighs \: 46 \: g}} \\ { \sf{0.2 \: moles \: weigh \: (0.2 \times 46) \: g}} \\  = 9.2 \: g

4 0
3 years ago
What does this quote mean? "The most beautiful thing we can experience is mysterious.it is source of all true art and all scienc
kolbaska11 [484]
Albert Einstein wrote this quote. Given that he was a scientist, he found the world of religion beautiful. The mystery of life. Almost every religion out there contradicts itself but still believes in something so supernatural that they have come to rule the universe. It is a reflection of the universe which we cannot perceive. The beautiful mystery not only is the world of religion but the very structure of it. Even as a scientist – someone who believed that the world may be more functional scientifically rather than being controlled by the religious beliefs of people – if you can't stand in awe and wonder at the mystery of life, then you are in a position of great danger as you live a life you don't even wonder about. "His eyes are closed", meaning he is walking blindly through life not trying to understand the beautiful mystery of life that comes with living it.

Hope that helped. If you want to change some of the words to make it sound more grade 6 level, you are welcome to do so.
4 0
3 years ago
Other questions:
  • Classify each substance as a strong acid, strong base, weak acid, or weak base. drag each item into the appropriate bin.
    6·1 answer
  • The lab procedure involves several factors, listed below. Some were variable and some were constant. Label each factor below V f
    8·2 answers
  • Avogadro’s number was calculated by determining the number of atoms in
    15·2 answers
  • Explain how the temperature of a substance is related to the kinetic energy of its molecules.
    12·2 answers
  • Pieces of dry ice become smaller through the process of condensation. true or false.
    13·1 answer
  • If 450.0 mL of a 0.500 M solution is mixed with 200.0 mL of water, what is the molarity of the new
    8·1 answer
  • _Mg + ___ Fe2O3 -&gt;_MgO +<br> Fe<br> Balance the chemical equation.
    7·1 answer
  • How does a scientist answer a scientific question? A. By observing and measuring B. By asking others for their opinions C. By fi
    7·2 answers
  • plz answer fast Which is not a crystalline allotrope of carbon? Select one: a. soot b. diamond c. graphite
    11·1 answer
  • What are the preparations of alcohols?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!