1. What is the name of the gas?
I believe the gas that is being produced is carbon dioxide gas.
2. NaHCO3 + HC2H3O2 ⟶ ________ + H2O + CO2
The missing substance would be sodium acetate or <span>NaC2H3O2. By looking at the number of atoms of the elements in reactant and the product you will know how many of the elements is lacking.</span>
There's no way to know this without knowing the number of pencils he started with
Answer:
(9159 / 7 = 1308.429)
Step-by-step explanation:
Simply multiply the last digit by 2 and then subtract the product from the remaining digits.
If that difference is divisible by 7, then 9159 is divisible by 7.
The last digit in 9159 is 9 and the remaining digits are 915. Thus, the math to determine if 9159 is divisible by 7 using our alternate method is:
915 - (9 x 2) = 897
Since 897 is not divisible by 7, 9159 is also not divisible by 7.
Therefore, the answer to "Is 9159 Divisible By 7?" is no.
(9159 / 7 = 1308.429)
D. Subtract 61 and multiply by 2
Answer:
D
Step-by-step explanation:
Using the cosine ratio and the exact value
cos45° = 
, then
cos45° = 
= 
= 
= ( cross- multiply )
2BC = n
( divide both sides by 2 )
BC = 
→ D
