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harkovskaia [24]
2 years ago
15

Hydrogen can be found in many things. It cannot be broken down to create something else. An example of something like hydrogen i

s oxygen. We call things like hydrogen or oxygen _ .
Chemistry
1 answer:
KiRa [710]2 years ago
6 0

Answer:

matter im pretty sure sorry if its wrong

Explanation:

based on the property of conserving matter, matter can not be created or destroyed

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How many grams of CuF2 are needed to make a 2.8 M solution
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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
Please help I will mark Brainly
Talja [164]
The reactants are the substances on the left side, which react and give the products on the right side.
The reactants are Fe and O.
The product is Fe2O3.
The arrow to the right means that the reaction is going in only one direction — the only reaction happening at the moment is that Fe and O are making Fe2O3.
(s) means the substance is in the solid state, and (g) means in a gaseous state (or the substance is a gas in that reaction).
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What is the percent by mass of oxygen in ca(oh)2? [formula mass = 74.1]
andre [41]
16(2)/74.1=.431

.431x100= 43.1%
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Answer:

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Explanation:

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Which of the following is the correct name for the compound K2BrO2?
Zigmanuir [339]
The correct name for the molecular formula <span>K2BrO2 would be potassium bromine dioxide. In addition, one of the primary uses of this chemical compound would be in the water purifying, as well as in water treatment industry which could serve as an alternative to chlorine as a disinfectant.</span>
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