Answer:
-6
Step-by-step explanation:
we just need to do the step slope=(y2-y1)/(x2-x1)
so slope =-30-(-54)/(7-11)=24/-4=-6
Pyramid Surface Area = (½ * Perimeter of Base * Slant Height) + Base Area
Answer: -5/4
Step-by-step explanation:
Apply the fraction rule: a/-b = -a/b
-5/6/2/3
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Divide fractions: a/b/c/d = a x d/ b x c
-5 x 3 / 6 x 2
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Multiply the numbers: 6 x 2 = 12
-5 x 3 / 12
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Multiply the numbers: 5 x 3 = 15
-15/12
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Cancel the common factor.3
-5/4
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Sorry if this is a little confusing but your answer to the question is ( -5/4 )
Answer:
The correct answer is A, Point P
Step-by-step explanation:
since the additive inverse of 2 is -2 because -2 + 2 = 0 the correct choice must be choice A, Point P.
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
