Answer:
C
Explanation:
The chemical energy stored in the match changed to thermal energy and light energy.
Without doing research before doing an experiment you’d be at risk, example: Chemical reactions that COULD cause chemicals burning through human skin, or setting off an harmful explosion by mixing unknown chemicals together.
Answer:
3 bags are required.
Explanation:
Find the number of mg needed for 150 pounds
150 pounds * 5 mg/pound = 750 mg
1 bag = 250 mg
x bags = 750 mg Cross multiply
250 * x= 750 Divide by 250
x = 750/250
x = 3
Answer:
The distance the truck traveled is 190
Explanation:
I added 30, 45, 50, 65 together to get the total distance
<span>energy provided=13.4 eV
energy released=0.7 eV
energy absorbed = 12.7eV
initial energy= -13.6eV [ground state]
final energy = -13.6+12.7 = -0.9 eV
This energy corresponds to n=4 in hydrogen atom</span>
