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Lena [83]
2 years ago
11

Which arrow in the diagram represents the burning of fossil fuels? Choose 1 answer: Choose 1 answer: (Choice A) A arrow 1 (Choic

e B) B arrow 2 (Choice C) C arrow 3 (Choice D) D arrow 4
picture - https://cdn.kastatic.org/ka-perseus-images/80ac63736473a685a2d7c6dff70d0675c29cf858.svg
Chemistry
1 answer:
Alona [7]2 years ago
7 0

Answer: arrow 4

Explanation:

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8 0
3 years ago
How many moles are needed
geniusboy [140]

Answer: amount of substance n = cV = 2.0 mol/l x 0.25 l = 0.50 mol

Explanation:

7 0
2 years ago
lava is a hot liquid rock. when lava flows over solid ground beneath it increases in temperature. what happens to the molecules
MatroZZZ [7]

Answer:

Lava is hot liquid rock. When lava flows over solid ground, the solid ground beneath it increases in temperature. What happens to the molecules in the solid ground when the temperature is increasing? The energy of the molecules in the ground decreases.

7 0
2 years ago
2.5 * 10^4 gallons to mL
Gre4nikov [31]
(2.5)(10000)=25000

25000 * 3785

ML = 94635294.6 milliliters
6 0
3 years ago
Mr. Romeo wants to make a solution of NaOH. He measures out 97.68 grams and puts it into 3 liters
Studentka2010 [4]

Answer:  Molarity of the solution is 0.813 M.

Explanation:

Given : Mass of NaOH = 97.68 g

Volume of solution = 3 L

The molar mass of NaOH is 39.99 g/mol. Hence, moles of NaOH are calculated as follows.

No. of moles = \frac{mass}{molar mass}\\= \frac{97.68 g}{39.99 g/mol}\\= 2.44 mol

Molarity is the number of moles of solute present in a liter of solution. Therefore, molarity of given solution is calculated as follows.

Molarity = \frac{no. of moles of solute}{Volume (in L)}\\= \frac{2.44 mol}{3 L}\\= 0.813 M

Thus, we can conclude that molarity of the solution is 0.813 M.

8 0
3 years ago
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