How many protons are in an Fe2+ ion?

Answers

Answer 1

Answer: Iron (Fe) has an atomic number of 26, so Fe2+ has 52 protons and 51 electrons

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How many moles of ethylene (C2H4) can react with 12.9 liters of oxygen gas at 1.2 atmospheres and 297 Kelvin?

Answers

So in this equation, 3 oxygen will react with 1 ethylene.
then, you convert from 12.9 Liters to moles.
1 mole = 22.4 Liters of gas.
x moles = 12.9 liters

So, 22.4x = 12.9, which means that x = 12.9/22.4, and you get about 0.6, then you divide by 3 because you have 3 Oxygen, and you get about 0.2.

So, 0.2 moles of ethylene C2H4 can react with 12.9 liters of Oxygen Gas.

Hope this Helps :)

a beaker with water and the surrounding air are all at 24'C. after ice cubes are placed in the water, heat is transfered from

Answers

Heat is transferred from air to the ice cubes, so that's why ice cube melt.

Calculate the number of ATOMS in 1.0 mole of O2.

Answers

Answer: The number of atoms in given amount of oxygen gas is $6.022* 10^(23)$

Explanation:

According to the mole concept:

1 mole of a substance contains $6.022* 10^(23)$ number of atoms.

We are given:

Moles of oxygen gas = 1 mole

So, the number of atoms that will be present in 1 mole of oxygen gas will be $1* 6.022* 10^(23)=6.022* 10^(23)$ number of atoms.

Hence, the number of atoms in given amount of oxygen gas is $6.022* 10^(23)$

There is 6.02*10^23 molecule per mole. And there is 2 atoms per oxygen molecule. So the answer is 1.204*10^24 atoms in 1.0 mole of O2.

What is used up in and stops a chemical reaction?

Answers

Answer:

This question is incomplete but the completed question is below

What is used up in and stops a chemical reaction? (a) percent yield (b) limiting reactant (c) theoretical yield (d) excess reactant

The correct option is (b)

Explanation:

A chemical reaction is a chemical combination,rearrangement or disintegration of chemical substance(s) (called reactants) to form new chemical substance(s) (called products).

A limiting reactant is the reactant that is totally used up during the course of a reaction. When this reactant is used up, it limits the amount of products formed and eventually stops the chemical reaction.

The chemical reaction does not stop until the reagent is used .

I hope that's help !

In solids, the particles of matter are not in constant motion.True or False?

First to answer and get it correct will get the ''Brainliest Answer''

Answers

true because in a solid particles dont move so it wouldn't be in a constant motion.

this could go either way they vibrate so that would make it false but they always will have a definite shape and volume so that would make it false I am leaning towards true though so I would put true.

Write the ionic equation for the reaction of aqueous propanoic acid with aqueouspotassium hydroxide.

Answers

The ionic equation for the reaction of aqueous propanoic acid (CH3CH2COOH) with aqueous potassium hydroxide (KOH) can be written as follows:

CH3CH2COOH + OH- → CH3CH2COO- + H2O

In this equation, propanoic acid (CH3CH2COOH) reacts with hydroxide ions (OH-) from potassium hydroxide (KOH) to form the propanoate ion (CH3CH2COO-) and water (H2O).

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