Calculate the number of atoms needed to balance the following equation: CaCO3+HCl->CO2+H2O+CaCl. (Number 3 on my paper)
Answers
Answer:
CaCO3 + 2HCL -> CO2 +H2O + CaCl2
Explanation:
When balancing an equation, it is important to first ensure that the chemical formulas in the equation are correct. In the above equation, the first modification required is for CaCl to be corrected to CaCl2. This is because the calcium ion has a charge of 2+ which has to be balanced by 2 chloride ions, each of charge 1-
Next, the overall atoms of the equations should be balanced. The number of atoms of each element on the side of reactants should be equal to their number on the side of the products. In this case, the number of HCL molecules should be 2.
Before balancing equation:
Reactants: Ca: 1, C: 1, O: 3, H: 1, Cl: 1
Products: Ca: 1, C: 1, O: 3, H: 2, Cl: 1
After balancing equation:
Reactants: Ca: 1, C: 1, O: 3, H: 2, Cl: 2
Products: Ca: 1, C: 1, O: 3, H: 2, Cl: 2
:CaCO3+2HCl---> CO2+ H2O+CaCl2
Related Questions
The lone pair of electrons in ammonia allows the molecule to: A.assume a planar structure. B.act as an oxidizing agent. C.act as a Lewis acid in water. D.act as a Lewis base in water.
What is the mass in grams of 0.94 moles of sodium bicarbonate. NaHCO3?
What’s is CO written?
The mass of a proton is approximately equal to(1) 1 atomic mass unit (2) 12 atomic mass units (3) the mass of one mole of carbon atoms (4) the mass of 12 moles of carbon atoms
Answers
The molar mass is different from "mass"; 1 mole of NaOH is equal to 40.0g/mol.
When the question asks, what is the mass? It is referring to how many grams there are.
First, we are going to convert the molecules to atoms using Avogadro's number (=6.02 x 10^23)
(2.50 x 10^22 molecules) x (6.02 x 10^23 atoms) = 0.042 mol
Next, we are going to convert from moles to grams.
0.042 mol of NaOH x 40.0 g of NaOH/1 mole = 1.68g of NaOH.
There are 1.68 grams in 2.50 x 10^22 molecules of NaOH.
Hello!
What is the mass of 2.50 ×1022 molecules of NaOH (Molar mass = 40.0 g/mol)?
Data:
Molar Mass of NaOH = 40 g/mol
Solving: According to the Law Avogradro, we have in 1 mole of a substance, 6.02x10²³ atoms/mol or molecules
1 mol -------------------- 6.02*10²³ molecules
y mol -------------------- 2.50*10²² molecules
Product of extremes equals product of means
Solving: Find the mass value now
40 g ----------------- 1 mol of NaOH
x g ------------- 0.042 mol of NaOH
Answer:
The mass is 1.68 grams
_______________________
I Hope this helps, greetings ... Dexteright02! =)
Answers
The scientist that performed the cathode ray experiment leading to the discovery of electrons is the scientist Sir Joseph John Thompson or J.J. Thompson. It was theorized after the discovery that electrons are present in the atom. In this model, the atom is composed mainly of electrons. It was describe as plum pudding because the electrons are dispersed within the atom.
John Thompson is the answer
Answers
Answers
Answer:
Exergonic process
Explanation:
A reaction in which the change in free energy is negative is what is termed an exergonic reaction. Energy is released into the surrounding medium in this type of reaction.
When pellets of NaoH is dissolved in water, energy in the form of heat is released into the medium and the solution gets hot.
Hence, the dissolution of NaoH in water is said to be exergonic.
pledge believed that
(1) religion had no place in national politics
(2) Congress should repeal Prohibition
(3) alcohol consumption was damaging to society
(4) only the government can solve social
problems
Answers
A) 5:6
B) 6:5
C) 4:5
D) 5:4
Answers
Since you have six moles of NO and 5 moles of N2, the ratio of NO:N2 is 6:5. The answer is letter B.