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m_a_m_a [10]
2 years ago
13

Alchemy was practiced _____.

Chemistry
1 answer:
Aleksandr [31]2 years ago
6 0
The answer is c maybe
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HELP ME PLEASE!
ale4655 [162]
1) 180 days. 24 hours in a day. 60 minutes in an hour. 24X60=1440. Then, take that by the days: 180. 180X1440=259,200 minutes in 180 days.

2) One English ton is 2,240 pounds. There are approximately 453.6 grams in one pound. 1.8X10^-4= .00018(2240)=.4032 TONS. To convert to pounds: .4032(2240)=903.168. To convert that to grams, multiply by the number of grams in a pound. 453.6(903.168)=409,677 grams. I apologize if I misunderstood your question (your 1.80X10-4 Tons was confusing)

3)First of all, figure out how many years 62 months is. The closest divisible is 60, which would be 5 years. So, first let's take care of the 5 years. Multiply it by the number of minutes in a year to start. 525,600(5)=2,628,000 minutes. Then multiply by 60 to get seconds: 2,628,000(60)= 157,680,000. Now, DON'T FORGET the other two months! Assuming that they are normal months (not February), they would equal 61 days (one 31 days, the other 30). The seconds in a day are 24x60x60=8,400. Multiply that by your number of days. 8,400(61)=5,270,400. DON'T FORGET TO ADD THEM TOGETHER!!! Add your two months and your 5 years: 157,680,000+5,270,400= 162,950,400 seconds!
5 0
3 years ago
50 kilograms whats the weight on earth and on the moon
KonstantinChe [14]
Assuming you are asking what is the weight in pounds, the answer would be:
Earth: 110.231 lbs
Moon: 18. 2984 lbs
8 0
3 years ago
A photon has an energy of 4.0 x 10-19 Joules. What is the frequency of the radiation?​
likoan [24]
6.04 x 10^14. See attached work.

7 0
3 years ago
What process coverts hydrogen to helium to create energy in the sun?
12345 [234]
Thermonuclear fusion
6 0
3 years ago
This ether, C4H8O, can be produced by slow distillation from an acidic solution of 1,4-butanediol, HOCH2CH2CH2CH2OH. It gives a
horrorfan [7]

Answer:

Tetrahydrofuran

Explanation:

Since the compound tested negative for C-C double bond, it must be a cyclic ether. Cyclic ethers have the oxygen atom attached to a ring. It is important to note that in a cyclic compound, one carbon atom is only bonded to two hydrogen atoms. Hence there are four carbon atoms in the compound, eight hydrogen atoms and one oxygen atom. This corresponds to the structure of tetrahydrofuran. Its structure is shown in the image attached.

6 0
3 years ago
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