5.01 kJ are used to melt a sample of ice at 0°C. What is the mass of the sample? general formula:

15.0 g

Explanation:

Step 1: Given and required data

Step 2: Calculate the mass (m) of water

334 kJ are required to melt 1 kg of ice at 0°C (melting point of water). We can calculate the mass of ice melted by 5.01 kJ using the following expression.

Q = ΔH°fus × m

m = Q / ΔH°fus

m = 5.01 kJ / (334 kJ/kg)

m = 0.0150 kg = 15.0 g

they are all solids.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.