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stiv31 [10]
3 years ago
14

Chemistry questions?

Chemistry
1 answer:
Liono4ka [1.6K]3 years ago
6 0

Answer:

The first one is 425g of copper

Explanation:

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Lerok [7]

Answer: It is B.) 1s^22s^12p^1

Explanation: mind giving me brainliest? :)

7 0
2 years ago
Read 2 more answers
the reaction of two gases in a sealed container produces a different gas and the system reaches equilibrium. what change in conc
telo118 [61]

Answer: Increasing the concentration of a reactant or decreasing the concentration of the product.

Explanation: For the equilibrium of the reaction to shift to the left, we must decrease the concentration of a reactant or increase the concentration of the product. This is based on Le Chatelier's principle which describes the effect on the equilibrium of changes in concentration or pressure of a product or a reactant. Adding more products in a system would disturb the equilibrium thus it would cause to reestablish it by shifting the reaction to the left producing the reactants. This would also be the same when you decrease the number of reactants in the system.

5 0
3 years ago
Choose the word that correctly completes the analogy.
irakobra [83]

Answer:

Minera and Aragonite

Explanation:

Limestone is a common type of carbonate sedimentary rock. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO 3). Limestone forms when these minerals precipitate out of water containing dissolved calcium.

8 0
2 years ago
Which sample is a pure substance?zinc oxidesugar dissolved in waterpond watersoil.
AnnZ [28]

Answer:

Oxide sugar dissolved in water pond

because water + sugar= sugar melts but the oxide purifys the water.

Explanation:

<u><em>#carryonlearning!</em></u>

6 0
2 years ago
Rank the following in order of increasing (lowest to highest) reactivity:
choli [55]

Answer:

a)  Li<Na<Rb

b) P<S

c) Rn<Xe

d) Hg<W<Cs

4 0
3 years ago
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