[lionheart6951]

Q1   If an atom ratio in the compond ammonia is 1 N for every 3 H, how many molecules of Nitrogen (Nc) do you need to make molecules of ammonia (NH3).


a. 10
b. 15
c. 3/5
d. 5/3
e. 5





Q2   Which of the following diagrams best represents the size of the atomic nucleus relative to the size of the atom.

ABCD

a. a
b. b
c. c
d. d


Q3  If you heat 10 g of wood and produce 1 g of ash, what is the mass of the other product produced?

a. 1 g
b. 10 g
c. 9 g
d. 11 g
e. none of the above


Q4  If you heat 50 grams of wood and produce 10 grams of ash, what is the total mass of the products?

a. 10 g
b. 40 g
c. 25 g
d. 50 g
e. none of the above.


Q5  What does the following element description actually mean?
       Iron- 57

a. an iron with 57 protons
b. an iron with 57 neutrons
c. an iron with a mass number of 57
d. an iron with an atomic number of 57


Thanks for your *delete me*

William

[sjb]

What's chem 105?

Q1 - I think you are missing a number between "make" and "molecules"?

Q2 - I don't see any diagram

Q3 - What is the composition of ash (I assume you don't mean Fraxinus, Sorbus or similar)?

Q4 - ditto

Q5 - Do you know the names of any other elements that have a similar name?

[408]

3 and 4 are conservation of matter questions and require no other knowledge.
1 and 2 are lacking info

answers here www.google.com , have you even though about them? or read them?  had you read them you would realize copying and pasting would not get the diagram needed for q2