Question

help

Answer 1

@Vocaloid still sick?

Answer 2

feeling alright, let me take a look at it

Answer 3

fair warning i have to go to dinner in half an hour ish

Answer 4

Balance this equation: N2 + H2 ---> NH3, write the following molar ratios:
N2 / H2 N2 / NH3 H2 / NH3

Answer 5

this isn't that much questions

Answer 6

ok, for chemical equations we start with the most "complex" compound (the longest, most atoms, etc.)

so NH3

we see there are 3 on the right side and only 2 on the left side, so let's add a 2 in front of NH3 to give 6H and a 2 in front of N2 to give 6 as well

Answer 7

** 3 in front of H2 sorry

Answer 8

N2 + 3H2 ---> 2NH3

now we have 6H and 2H on each side so that's it

Answer 9

okay, so the molar ratios now

Answer 10

oh

Answer 11

the molar ratios just come from the balanced equation

N2 + 3H2 ---> 2NH3

N2 / H2 is just 1/3 (just copying off the equation)
N2 / NH3 is just 1/2 (again just copying the equation)
H2 / NH3 is 3/2

Answer 12

Write and balance the equation for the synthesis of water. Then answer the following questions.
a) What is the H2 / H2O molar ratio?


b) Suppose you had 20 moles of H2 on hand and plenty of O2, how many moles of H2O could you make?

Answer 13

water synthesis equation, balanced

Answer 14

now, look at the coefficients of H2 and H2O, what's the ratio between them?

Answer 15

2

Answer 16

2 / 2 (they're both 2) which simplifies to 1 / 1

Answer 17

then for b) since moles of H2 = moles of H2O then it's 20 moles of H2O (since there's 20 moles of H2)

Answer 18

c) What is the O2 / H2O molar ratio?

Answer 19

take a look at the equation - what are the coefficients of O2 and H2O? you should give two numbers in your response

Answer 20

so i would guess one of them is 2? right? if not i might be doing it wrong

Answer 21

yup, the coefficient of H2O is 2

since O2 doesn't have a coefficient in front of it, it is always assumed to be 1

so 1 / 2 = your ratio

Answer 22

d) Suppose you had 20 moles of O2 and enough H2, how many moles of H2O could you make?

Answer 23

since 1 mol of O2 makes 2 moles of H2O we just double the moles of O2 given (20) to get 40 --> your answer

Answer 24

multiply by 2, right?

Answer 25

or is it 20?

Answer 26

should be 40

since we are given 20 moles of O2 and each mole of O2 makes 2 moles H2O, just double the original moles of O2 to get 40 as the final answer

Answer 27

Write the balanced equation and solve each of the following
1. Aluminum metal and hydrogen chloride react to form aluminum chloride and hydrogen gas.
a. How many moles of aluminum metal are needed to produce 3.33 moles of aluminum chloride?





b. How many moles of hydrogen chloride are needed to react with this number of moles of aluminum metal?

Answer 28

Aluminum metal is just Al

Hydrogen Chloride --> hydrogen + chloride --> HCl

Aluminum Chloride --> aluminum has a +3 charge and chlorine has a -1 charge, so AlCl3

hydrogen gas --> always H2 since hydrogen is diatomic

Answer 29

so Al + HCl --> AlCl3 + H2

see if you can try balancing this, as a hint start by balancing the chlorines on AlCl3

Answer 30

there are 3 chlorines on the AlCl3 but only 1 on the HCl, so what number should we put in front of the HCl to balance out the chlorines?

Answer 31

hm...

Answer 32

either 4 or 2

Answer 33

since there's 3 on the right side, we can multiply the left by 3 (since 1*3 = 3) to make them both 3

so that gives us

Al + 3HCl --> AlCl3 + H2

and with that I have to go get dinner

Answer 34

okay, thank you