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mixer [17]
4 years ago
8

In the late 1800s, experiments using cathode ray tubes led to the discovery of the

Chemistry
2 answers:
Marat540 [252]4 years ago
3 0
<span>J. J. Thomson discovered a negatively charged particles called electrons during those experiments. </span>
postnew [5]4 years ago
3 0

Answer;

- Electrons

In the late 1800s, experiments using cathode ray tubes led to the discovery of the electrons.

Explanation;

-J.J. Thompson discovered an electron, the first of the subatomic particles, using the cathode ray tube experiment. He found that many different metals release cathode rays, and that cathode rays were made of electrons, very small negatively charged particles.

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How do you do this problem?
MariettaO [177]

Answer:

Explanation:

I can do it, but it may not be right. The atoms/ions and charges are all balanced, but I'm just not sure.

12Br2 + 12H20 ==> 4BrO3^- +20Br- + 24H+       You can divide this by 4

3Br2 + 3H20 ==> BrO3^-  + 5Br^-  + 6H+

Element/ion                Left                Right

Br                                 3*2 = 6        1 + 5 = 6

H                                    6                       6H+

O                                     3                       3

Charges                          0                    -1 - 5 + 6 = 0

The H+ represents an Acid. The problem is it says that the reaction takes place in an acid. It is so long ago, I don't remember if this includes being on the right.

Anyway it is balanced.

4 0
4 years ago
What five things is the element carbon part of??
fgiga [73]

It is part of oceans, air, rocks, soil and all living things. Carbon doesn't stay in one place. It is always on the move! In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide.

Hope this helps.

7 0
3 years ago
Batteries work by letting charged ions flow through an electrolyte solution.
Semmy [17]

Answer:

Batteries work by letting charged ions flow through an electrolyte solution.

A battery is a device that consists of one or more electrochemical cells that can convert stored chemical energy into electrical current. Each cell consists of a positive electrode, or anode, a negative electrode, or cathode, and electrolytes that allow ions to move between the electrodes, allowing current to flow out of the battery to carry out its function.

Explanation:

Its operation is essentially based on a reversible chemical process called reduction-oxidation, in which one of the components is oxidized and the other is reduced; that is, a process whose components are neither consumed nor lost, but merely change their oxidation state, and which in turn can return to their original state under the right circumstances.

4 0
3 years ago
Which of the following statements is true?
Flauer [41]

Answer:

D. Q does not depend on the concentration or partial pressures of reaction components

8 0
3 years ago
Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this:
posledela

Answer: The value of the equilibrium constant Kc for this reaction is 3.72

Explanation:

Equilibrium concentration of HNO_3 = \frac{15.5g}{63g/mol\times 9.5L}=0.026M

Equilibrium concentration of NO = \frac{16.6g}{30g/mol\times 9.5L}=0.058M

Equilibrium concentration of NO_2 = \frac{22.5g}{46g/mol\times 9.5L}=0.051M

Equilibrium concentration of H_2O = \frac{189.0g}{18g/mol\times 9.5L}=1.10M

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_c  

For the given chemical reaction:

2HNO_3(aq)+NO(g)\rightarrow 3NO_2(g)+H_2O(l)

The expression for K_c is written as:

K_c=\frac{[NO_2]^3\times [H_2O]^1}{[HNO_3]^2\times [NO]^1}

K_c=\frac{(0.051)^3\times (1.10)^1}{(0.026)^2\times (0.058)^1}

K_c=3.72

Thus  the value of the equilibrium constant Kc for this reaction is 3.72

5 0
3 years ago
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