Question

@abb0t can you help me with a few chem questions?
An equation in which each side has the same number of atoms of each element is a(n) _____ equation.
A. polyatomic
B. monatomic
C. balanced
D. unbalanced

Answer 1

It's not A or B, so you're left with C or D, which do you think it is.

HINT: think of what it means to have same number on both sides. or SAME amount of things on a scale.

Answer 2

c balanced?

Answer 3

The reaction in Fe + O2→Fe2O3 is an example of a(n):
A. aqueous reaction.
B. single-replacement reaction.
C. combination reaction.
D. decomposition reaction.
wouldnt this be B

Answer 4

Yes, balanced.

Answer 5

No, it is not, B

Answer 6

oh im trying my best just checking all my answers on my exams that were wrong so i can take the midterm.... can you explain that one?

Answer 7

Well, it's not A because water is not involved (the word aqueous should of been ovbvious)
and decomposition is not the answer because you're not building down, you're building UP.
also, single displacement is not the answer because you;re not displacing one element by another, you're just combining two things together, such as A + B \(\rightarrow\) AB.

Answer 8

so c?

Answer 9

Yes

Answer 10

In a double-replacement reaction:
A. the reactants are usually a metal and a nonmetal.
B. the reactants are generally two ionic compounds in aqueous solution.
C. one of the reactants is often water.
D. energy in the form of heat or light is always produced.
woould this be A

Answer 11

A double replacement reaction is a chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions.

Answer 12

so B?

Answer 13

they are generally two ionic compounds, idk abt if they're in water, but that is probably the best answer.

Answer 14

When the equation Fe + O2→Fe2O3 is balanced, the coefficient for O2 is:
A. 4
B. 3
C. 2
D. 1
D

Answer 15

Wrong, why did you choose D?
The above equation is not balanced. Try again and please work on it.

Answer 16

a 4

Answer 17

Wrong, are you just guessing now?!

Answer 18

no i dont understand how to do it

Answer 19

You have 3 oxygen molecules on the left and 2 on the right.
How do you balance it?
You add a # to the front of oxygen. but if you change one side, u probably have to change the other.

Answer 20

I am not going to help you during the midterm. So you need to read your book or look at this: http://www.wikihow.com/Balance-Chemical-Equations

Answer 21

im not taking the midterm im checking my answers from my old exams