Answer:
A: Explanation: The surface area of a 3-D object is the sum of all the areas of all the 2-D surfaces of the object; so, its unit is the same as that of area. The SI unit of area is square metre (m2)
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Answer:
Im not sure if you're asking us to solve the function operation but if you are heres what I got:
3
+ 4 and = -23 =
= 3 =
1 =
Sorry if this is wrong
Wow lots to ask for here... give me 4min I got you
Answer: 5
Explanation: -5 -4 -3 -2 -1 0
The number of grams present in 0.54 moles of calcium is; 22 g
We are given;
Number of moles; n = 0.54 moles
Now, Molar mass of calcium is;
M = 40.1 g
Formula for number of moles is;
n = m/M
Where;
n is number of moles
m is mass in grams
M is molar mass
Thus;
0.54 = m/40.1
m = 40.1 × 0.54
m = 21.654 g
Approximately m = 22 g
Read more at; brainly.com/question/5397233
