Answer: option B. 5g
Explanation:
50mL of H2O dissolves 25g of CaCl2.
Therefore, 10mL of H2O will dissolve Xg of CaCl2 i.e
Xg of CaCl2 = (10 x 25) /50 = 5g
Answer : The correct option is, 
Explanation :
The conversion used for the temperature from Fahrenheit to degree Celsius is:

where,
= temperature in Fahrenheit
= temperature in centigrade
The conversion used for the temperature from degree Celsius to Kelvin is:

where,
= temperature in Kelvin
= temperature in centigrade
As we are given the temperature in Fahrenheit is, -10
Now we have to determine the temperature in degree Celsius.



Now we have to determine the temperature in Kelvin.



Therefore, the temperature in degree Celsius and Kelvin are, 
Answer:
False
Explanation:
Many abused drugs are prescription drugs.