Solve the equation.-28 = a - 25
A. 3
B. -3
C. 53
D. -53
Answer: B
Mathematics
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If you use 30g or NaCl to make 750mL of solution, what percent concentration have you made?
A. 0.04% B. 0.4% C. 4% D. 4%W/V
Mathematics
Solve.
+ 
= -1
A. No solution
B. 1
C. 0
D. 
Mathematics
Find the mass, in grams, for the given number of molecules of a compound whose molar mass is given. Round your answer to the nearest hundredth of a gram.3.08 × 1025 molecules of silver nitrate (AgNO3); molar mass 169.88 grams
A. 51.16 grams B. 0.30 grams C. 8691.53 grams D. 523.23 grams
Mathematics
Solve the problem.Find the center and the scale factor of the dilation shown below.
A. Center T; scale factor 3/4 B. Center S; scale factor 4/3 C. Center S; scale factor 3/4 D. Center T; scale factor 1/2
Mathematics