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natka813 [3]
3 years ago
11

Photovoltaics perform what types of energy transformation?

Chemistry
1 answer:
Korolek [52]3 years ago
8 0
C.) Radiant to Electrical
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How many kilometers are there in 4.5 x 10^3 meters ?
Len [333]
1 meter = .001 kilometers so 4.5 x 10^3 = 4500 so .001 x 4500 = 4.5 kilo
7 0
3 years ago
A total of 20.0 mL of sodium hydroxide (NaOH) was neutralized by 30.0 mL of 0.250 M hydrogen bromide (HBr). What was the concent
Karolina [17]

Answer:

0.375 M

Explanation:

NaOH(aq) + HBr(aq) ------------> NaBr(aq) + H2O(l)

Concetration of acid CA= 0.250M

Concentration of base CB= ????

Volume of acid VA= 30.0mL

Volume of base VB= 20.0mL

Number of moles of acid nA= 1

Number of moles of base nB= 1

CA VA/CB VB= nA/nB

CB= CAVAnB/VB nA

= 0.25× 30×1/20×1= 0.375 M

8 0
3 years ago
Atomic number of a Carbon atom is 6. How many electrons does it have?
Nostrana [21]
In the first shell there is 2 electrons and on the second shell there is 4 elections.
6 0
3 years ago
Calculate the percentage by mass of oxygen in Al2(SO4)3 (Al=27, S=32,O= 16) PLEASE SHOW FULL WORKING​
White raven [17]

Answer:

There is 61.538% oxygen in Al2(SO4)3.

Explanation:

Wt Of oxygen in the compound = 12*16 = 192 amu.

Total Wt. Of the compound = 2*12+3*32+12*16 = 312 amu.

Thus, percent of oxygen = Wt of oxygen/total Wt. Of compound *100

= 192/312 * 100=61.538 %

6 0
3 years ago
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PLEASE HELP<br>The three main types of climate zones in order from coldest to warmest are
monitta

Answer:

Earth's climate can be divided into three major zones: the coldest polar zone, warm and humid tropical zone, and the moderate temperate zone.

Explanation:

6 0
2 years ago
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