helium
Explanation:
because it has the mass number of 4
C. Her image will be upside down.
The moles of O2 that are needed to react completely with 35.0 mol C2H2 is 87.5 moles of O2
<u><em>Explanation</em></u>
Write a balanced chemical equation for reaction of between C2H2 and O2
2 C2H2 + 5O2 → 4 CO2 + 2 H2O
if 35.0 moles C2H2 reacted then use the o mole ratio to determine the moles of C2H2
The mole ratio of C2H2 :O2 = 2:5 therefore the moles of O2
= 35 moles x5/2 = 87.5 moles of O2
It has bent geometry, which is similar to H2O, with the same angle of 109.5 degrees between 2 single H-S bonds.
Answer:
test or trial
Explanation:
When somone is doing an expirement they usually conduct tests to see if their hypothesis was valid. They could so small trials like this,
Example:
Problem: Can people taste the difference between Coca Cola and Pepsi?
Trials:
1. Yes
2. Yes
3. No
4. Yes
5. Yes
6. No
7. No
8. Yes
9. Yes
10. Yes
Based on the majority, the solution to our problem is yes, most people can taste the difference between Coca Cola and Pepsi.