an electromagnet wave can go through objects
Answer: 165 g
Explanation: solution attached:
Density is expressed as mass per unit volume
d = m/V
Derive to find mass
m= dV
= 1.10g/mL x 150 mL
= 165 g
Cancel out mL and the remaining unit is in g.
Two compound samples are composed of the same elements but in different proportion, it means the two samples are two different compounds.
Because there are many compound which consist of same elements. for example water and hydrogen peroxide are two different compounds but these compounds consist if same elements, hydrogen and oxygen;
H₂O consist of hydrogen and oxygen and it is water
H₂O₂ also consist of hydrogen and oxygen but it is hydrogen peroxide
So, both are different compounds
Number #2 is joule
In the SI system the unit of heat is the joule. The calorie was defined so that the heat capacity of water was equal to one.The heat capacity of a substance is the amount of heat required to raise the temperature of a defined amount of pure substances by one degree.
Number #3 is Endothermic
Why? I can't explain. I Just left class where they were just explaining that.