Answer:
Q = 450 J
Explanation:
Given that,
Mass of a piece of glass, m = 45 g
The temperature changes from 10°C to 30°C.
The specific heat is 0.5 J/g°C
We need to find heat required to raise the temperature. The formula that is used to find it is given by :
So, the required heat is 450 J. Hence, the correct option is (c).
Answer:
Density= 0.4412g/cm^3
Explanation:
When finding density the formula is mass divided by volume. So the mass of 15g divided by 34cm^3 equals to the density of 0.4412g/cm^3.
Answer:
a phrase that describes how elements what do be stable and non reactive like the noble gas elements are.
Molarity is equal to the number of moles of solute per liter solution.
number of moles solute: (molar mass of perchloric acid is 100.45 g/mol)
35.0 mL * (<span>1.67 g/mL) *0.705 * (mol/100.45 g) = 0.41 moles
liter solution = 2000 ml * (1 L/1000 ml) = 2 L
molarity is equal to 0.41 moles/ 2 L =0.205 M</span>
