What is the chemical composition of ammonium sulfate

Answers

Answer 1

Answer: ammonium refers to NH₄⁺ and sulfate refers to SO₄²⁻ . That means that ammonium sulfate is composed of NH₄⁺ and SO₄²⁻ with a formula of (NH₄)₂SO₄.

I hope this helps. Let me know if anything is unclear.

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Consider the reaction below.HCIO3 + NH3 → NH4+ + CIO3-
Which is a base-conjugate acid pair?
NH3 and CIO3-
NH3 and NH4+
HCIO3 and NH3
HCIO3 and NH4+

Answers

The example of base-conjugate acid pair is B. NH3 and NH4+.

What is a base-conjugate acid pair?

A base-conjugate acid pair simply means a pair that consist of two substances that only differ by the presence of a proton (H+).

In this case, the example of base-conjugate acid pair is NH3 and NH4+ because bNH4+ is the conjugate acid of the base NH3.

Learn more about acid on:

brainly.com/question/25148363

Answer:

NH3 and NH4+

Explanation:

NH4+ is the conjugate acid of the base NH3.

You have a 1 L container of a gas at 20 C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine?a. measure the mass of the gas
b. measure the speed of the gas molecules
c. measure the volume of the container
d. measure the pressure of the gas in the container

Answers

Without opening the container, a. measure the mass of the gas. Once you get the mass of the gas, you can calculate its density because you already know its volume which has a value of 1 liter. To take the mass of the gas, make sure you don't include the mass of the container. It would be better to measure the container before putting the gas and after putting the gas, and then subtracting the values.

What is a common ancestor?

Answers

In evolutionary biology, a common ancestor is allegedly a link between two varying branches or types of creatures. (Another word for these is 'missing links', since up to this point, not a single one of these common ancestors has been found in the fossil record)
Hope that helped =)

A Common ancestor is a organism that has shared predecessor of more then one different scion of a group of organisms.

The activation energy of a chemical reaction can be decreased by the addition of(1) a catalyst (3) electrical energy
(2) an indicator (4) thermal energy

Answers

The correct answer is option 1. It should be noted that a catalyst does not lower or decrease the activation energy because instead it provides an alternative route for the reaction to proceed. This speeds up a chemical reaction without being changed.

The atomic number of an atom will always identify the amount of protons in its nucleus. If the atom is neutral, what else is identified by the atomic number? A. the number of neutrons in the atom B. the most common isotope of the atom C. the atomic mass of the atom D. the number of electrons in the atom

Answers

D.The number of electrons in an atom.In an atom,the number of protons and electrons are always the same which is indicated by the atomic number.Since we know that protons have a positive charge, and electrons have a negative charge this suggests that an atom is always neutral as +1-1=0.

Which statement correctly describes the charge of the nucleus and the charge of the electron cloud of an atom?(1) The nucleus is positive and the electron cloud is positive.
(2) The nucleus is positive and the electron cloud is negative.
(3) The nucleus is negative and the electron cloud is positive.
(4) The nucleus is negative and the electron cloud is negative.

Answers

Atoms are made of nucleus and electrons. Nucleus have a positive charge due to the presence of protons and electrons are negative in charge . Thus option 2 is correct.

What is an atom?

Atoms are the basic unit every substance. Atoms combines to form molecules and compounds. An atom is made of nucleus and surrounding electrons which are revolving through a circular path of fixed energy.

Nucleus is the core of the atom and the 90% of the weight of atom is centered in the nucleus and it contains positively charged protons and neutral particles neutrons.

The nuclear model of atom was first proposed by Rutherford. He found the positive cloud of the atom and and named as nucleus. He discovered the positively charged particles protons.

The net charge of an atom is zero because all the positive charges are neutralised by equal number of negatively charged particles electrons.

Therefore, the nucleus is positive and the electron cloud is negative and option 2 is correct.

To find more about atomic nucleus, refer the link below:

brainly.com/question/10658589

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The nucleus of an atom is positive, because it contains the protons (+1 charge) and neutrons (0 charge)
The electron cloud has a negative charge, because electrons have a -1 charge
So the answer is (2)

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