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nirvana33 [79]
4 years ago
13

Help please.... this is hard

Chemistry
1 answer:
Luba_88 [7]4 years ago
8 0
Ooooo it is hard omg 0..0
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3. Dorji was provided with four colourless solutions. He was asked to
givi [52]

Answer:

First, we can test Solution 1. We know that Sodium Hydroxide is a strong base. If we test acids on blue litmus paper, they will turn red. If we test bases on red litmus paper, they will turn blue.  So, you can test all the of the solutions- water, sodium hydroxide and hydrochloric acid with blue and red litmus paper. HCl, Hydrochloric acid is an acid, so it will turn blue litmus paper red. It will not turn red litmus blue. The acids will turn blue litmus paper red. The bases will turn red litmus paper blue. Only water is a neutral liquid, which will not turn blue litmus paper red or red litmus paper blue. It will not change the colour of it. Thus, if you test all the solutions with blue and red litmus paper, you will know which solution is water.  Water is the only one which is neutral. It is the only solution which cannot change the colour of any litmus paper. Thus, you can identify it very easily.  

5 0
3 years ago
Which of the following conditions characterizes a system in a state of chemical equilibrium?
vodomira [7]

Answer:

a) Reactants are being consumed at the same rate they are being produced.

Explanation:

In a chemical reaction, chemical equilibrium is a state in which there is no change in concentration of the reactant and product. This means that as the reactants are consumed, they are also produced. Same thing with the products; immediately they are formed, they are consumed.

The option that accurately depicts a reaction at equilibrium is;

a) Reactants are being consumed at the same rate they are being produced.

7 0
3 years ago
Fossils can be body parts of ancient organisms, or they can be traces. Give five examples of traces. Help this is due today!!!!!
SSSSS [86.1K]

Burrows, tracks, coprolites, nests and footprints are examples of traces that can be found in a fossil.

6 0
3 years ago
A student investigates a pure metal, X. The student takes a 100.0 g piece of metal X, heats it
Mila [183]

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apple sauce penguin bro im lost! u got a picture?

Explanation:

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3 years ago
Can someone please help me out, I need to do this asap. Tired of bots responding my questions and would have to report it instan
Anit [1.1K]

Answer:

Solution given:

Required reaction is:

2H2+O2➔2H2O

now

10.

oxygen have 16 amu than total mass in the left side of oxygen is:

16×2=<u>3</u><u>2</u><u> </u>amu of Oxygen

11.

total mass of Oxygen in product side is;

16×2=<u>32 </u>amu of Oxygen

8 0
3 years ago
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