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Vinvika [58]
3 years ago
9

If their is a cube with 2/3ft what is the surface area?

Mathematics
1 answer:
Arlecino [84]3 years ago
8 0
A cube has 6 sides.

Find 1 side:
1 side = 2/3 x 2/3 = 4/9

Find 6 sides:
6 sides = 4/9 x 6 = 8/3 = 2 2/3 ft²

Answer: 2 2/3 ft²
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Please Help !!!
solong [7]
Best Answer: 2 LiCl = 2 Li + Cl2
mass Li = 56.8 mL x 0.534 g/mL=30.3 g
moles Li = 30.3 g / 6.941 g/mol=4.37
the ratio between Li and LiCl is 2 : 2 ( or 1 : 1)

moles LiCl required = 4.37
mass LiCl = 4.37 mol x 42.394 g/mol=185.3 g


Cu + 2 AgNO3 = Cu/NO3)2 + 2 Ag
the ratio between Cu and AgNO3 is 1 : 2
moles AgNO3 required = 4.2 x 2 = 8.4 : but we have only 6.3 moles of AgNO3 so AgNO3 is the limiting reactant
moles Cu reacted = 6.3 / 2 = 3.15
moles Cu in excess = 4.2 - 3.15 =1.05

N2 + 3 H2 = 2 NH3
moles N2 = 42.5 g / 28.0134 g/mol=1.52
the ratio between N2 and H2 is 1 : 3
moles H2 required = 1.52 x 3 =4.56
actual moles H2 = 10.1 g / 2.016 g/mol= 5.00 so H2 is in excess and N2 is the limiting reactant
moles NH3 = 1.52 x 2 = 3.04
mass NH3 = 3.04 x 17.0337 g/mol=51.8 g
moles H2 in excess = 5.00 - 4.56 =0.44
mass H2 in excess = 0.44 mol x 2.016 g/mol=0.887 g
5 0
3 years ago
Choose Yes or No to tell if each statement is true.
aivan3 [116]

Answer:

false,true,false,true

Step-by-step explanation:

not 100% sure

hope it helped

:)

4 0
3 years ago
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Which value of v is a solution to this equation? 3v=24
zhannawk [14.2K]
V = 24/3 = 8
So v = 8
Hope this helps, if it is , pls brainliest !!
6 0
2 years ago
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PLZZZZZ heLp me AN swer this questin!!!!!<br><br> 1+1x2+3=<br><br> PLZZZZZ
jonny [76]

Answer:

6

Step-by-step explanation:

Pls mark brainliest.

4 0
3 years ago
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How can I prove mathematically that (a / b) + (c / d) = (ad + bc) / bd
wlad13 [49]

Step-by-step explanation:

(a/b) + (c/d)

Find the common denominator.  In this case, bd.  So multiply the first fraction by d/d, and the second fraction by b/b.

(ad)/(bd) + (bc)/(bd)

Add the fractions.

(ad + bc) / (bd)

7 0
3 years ago
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