1. Why do all atoms of an element have the same atomic number, although they may have different mass numbers?2. What do we call atoms of the same element with different mass numbers?

3. Explain the meaning of each term in the symbol
(AZ)X

Answers

Answer 1

Answer: Atoms of an element have the same atomic number but different mass numbers because the atomic number only contains the amount of protons in an element.
Atoms of the same element that have different mass numbers are called isotopes.
With (AZ)X, the A is the number of protons, the Z is the number of neutrons, and the X is the electrons.

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Which catalyst is better for the decomposition of Hydrogen Peroxide(H₂O₂) , Potassium Iodide(KI) or Yeast? Explain why. Please help ASAP, very much appreciate it. Thankyou in advance.

Answers

Yeast, because it acts as a catalyst, or a helper, to remove the oxygen from the hydrogen peroxide

A chemical reaction is at equilibrium. Compared to the rate of the forward reaction, the rate of the reverse reaction is(1) faster and more reactant is produced
(2) faster and more product is produced
(3) the same and the reaction has stopped
(4) the same and the reaction continues in both directions

Answers

A chemical reaction is at equilibrium. Compared to the rate of the forward reaction, the rate of the reverse reaction is the same and the reaction continues in both directions and the correct option is option 4.

What is Chemical Equilibrium?

Chemical equilibrium refers to the state of a system in which the concentration of the reactant and the concentration of the products do not change with time, and the system does not display any further change in properties.

It is the state of a reversible reaction where the rate of the forward reaction equals the rate of the reverse reaction. While a reaction is in equilibrium the concentration of the reactants and products are constant.

Therefore, A chemical reaction is at equilibrium. Compared to the rate of the forward reaction, the rate of the reverse reaction is the same and the reaction continues in both directions and the correct option is option 4.

Learn more about Chemical Equilibrium, here:

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Answer:

choice 4

Explanation:

the reaction is constant but it does not stop, therefore it's choice 4

The orbits of the planets in our solar system arenot
a Elliptical, circular
b Circular, elliptical
C Circular, oval
d None of the above

Answers

Answer:

Explanation:

I don't know how to say how I got it.

Answer:

Explanation:

the orbits of the planets in our circular elliptical and circular

Write a nuclear equation for the fusion of two h−2 atoms to form he−3 and one neutron.

Answers

'Heavy' hydrogen (the isotope deuterium) , 2/1H is involved ,

[2= mass number, 1= atomic (proton) number]

2/1H + 2/1H → 3/2He + 1/0n

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2. Producers do not rely on other organisms for food.
3. There are always more consumers than producers in food chains.