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harina [27]
3 years ago
9

Which is not a reason why mass of an atom is expressed in atomic mass units rather than in grams?

Chemistry
1 answer:
Tasya [4]3 years ago
8 0
What are your answer choices? Scientists express the weight in AMU’s so that they can easily think about the weight of the atom. If it is expressed in grams, they’re constantly dealing with a weight that’s around 10^-24 grams, which is hard to deal with.
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How many grams of CuF2 are needed to make a 2.8 M solution
11111nata11111 [884]
Molarity is given as,

                              Molarity  =  Moles / Volume of Solution  ----- (1)

Also, Moles is given as,

                              Moles  =  Mass / M.mass

Substituting value of moles in eq. 1,

                              Molarity  =  Mass / M.mass × Volume

Solving for Mass,

                              Mass  =  Molarity × M.mass × Volume  ---- (2)

Data Given;

                  Molarity  =  2.8 mol.L⁻¹

                  M.mass  =  101.5 g.mol⁻¹

                  Volume  =  1 L (I have assumed it because it is not given)

Putting values in eq. 2,

                              Mass  =  2.8 mol.L⁻¹ × 101.5 g.mol⁻¹ × 1 L

                              Mass  =  284.2 g of CuF₂
5 0
3 years ago
___________ currents in the Earth's mantle cause plate movement which causes earthquakes and volcanic activity
Alecsey [184]
Convection currents in the Earth's mantle cause plate movement which causes earthquakes and volcanic activity.
6 0
3 years ago
three of the following are base units used in the metric system. which is not a base unit? meter liter kilogram gram
Novosadov [1.4K]
The base units used in the metric system are meter for the measurement of distance or displacement, liter as unit measurement of volume, kilogram as a unit of measurement of mass and seconds as unit of measurement of time. The answer is here is D. gram.
8 0
3 years ago
Why does knowing the mass of an object not help you identify what material the object is made from?
jeka57 [31]
Because mass is not always the same for objects made from the same material. Just because an object has the same mass as another doesn’t mean they are the same material.
4 0
3 years ago
Africa’s largest lake is Lake __________.
Tresset [83]

Lake Victoria

Explanation:

4 0
3 years ago
Read 2 more answers
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