The enthalpy of a reaction can be measured using a Calorimeter
Answer:
a) 35, b) 25, c) 60
Step-by-step explanation:
The number of girls is 10 more than the number of boys, so it's a good thing to choose a variable to represent the number of boys.
Number of boys: b
Number of girls: b + 10
Ratio of girls:boys is 7:5, so

"Cross multiply" to get

There are 25 boys. There are 10 more girls, so the number of girls is 35, and the total number of students is 60.
That's a packed classroom!
Answer:
C
Step-by-step explanation:
The formula for the area of a trapezoid is:
(height)(sum of parallel lines)
Thus, the formula in this question would be:
(4)(4+8) which is option C
Answer:
3000
Step-by-step explanation:
Answer:
T A N M B
Step-by-step explanation: