Answer:
Oxygen and magnesium come together in a chemical reaction to form this compound. After it burns, it forms a white powder of the magnesium oxide. Magnesium gives up two electrons to oxygen atoms to form this powdery product. This is an exothermic reaction.
Answer: C
Explanation: I believe it's C because I know A, B, and D are 100% correct
and if you look at solids, there pact together, pact together mean it cant move.
Answer:
1/2hour
Explanation:
it takes the runner 1 hour to complete 10km
so 5km is half of 10km therefore would take half the time
hope that helps:)
Answer:
test or trial
Explanation:
When somone is doing an expirement they usually conduct tests to see if their hypothesis was valid. They could so small trials like this,
Example:
Problem: Can people taste the difference between Coca Cola and Pepsi?
Trials:
1. Yes
2. Yes
3. No
4. Yes
5. Yes
6. No
7. No
8. Yes
9. Yes
10. Yes
Based on the majority, the solution to our problem is yes, most people can taste the difference between Coca Cola and Pepsi.
Answer:
The new pressure is 1,67atm
Explanation:
In this case, having constant temperature we apply Boyle Mariotte's Law, where the volume varies inversely proportional to the pressure: P1 xV1 = P2xV2. We pass the pressure unit from Torr to atm: 760 Torr = 1atm
P1 xV1 = P2xV2 --> P2=P1 xV1/V2
P2= 1 atm x 5,00L/3, 00L=1, 67 atm