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Ber [7]
3 years ago
13

MAhiibap

SAT
2 answers:
svetlana [45]3 years ago
5 0
Amphibia



is that right?
yarga [219]3 years ago
5 0

Answer:

i like turtles

Explanation:

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Kayla why are you not c h a t i n g <br> on ro blox
aalyn [17]
You better c h a t kayla
5 0
3 years ago
Read 2 more answers
Kkdk +626 eek Duden
Anna11 [10]

Answer:

+ 777

Explanation:

give brainliest please

5 0
3 years ago
12 grams (g) of a chemical are added to a metal. The amount A, in grams, of the chemical
andriy [413]

Answer: A=12

Explanation:

4.5

The amount of chemical remaining after twelve seconds in the first reaction is:

A = 12 - 0.5(12)

= 12 - (6)

= 6

In the dissolved reaction, the amount of chemical loses half of itself every four seconds. This is the same thing as dividing by 2 every four seconds.

This is an exponential decay, so the amount of chemical divides by 4 every eight seconds, and by 8 seconds every twelve seconds. The amount remaining after twelve seconds in the second reaction is:

A' = 12/8

= 3/2

= 1.5

The difference between the amounts of chemical remaining is:

6 - 1.5 = 4.5

Therefore, A is 4.5 g greater than A' after twelve seconds.

3 0
3 years ago
On Tuesday, Jennifer will mix Crunchy Grain cereal
miv72 [106K]

Answer:

there are 1/4 cups of Super Grain Cereal in the mixture

Explanation:

Super Grain cereal provides 240 calories per cup. Thus, for s cups of Super Grain cereal, there will be 240s calories

Crunchy Grain cereal provides 210 calories per 3/4 cups. Thus, 210 ÷ 3/4 per cup.

210 ÷ 3/4 = 280 calories, For c cups of Crunchy Grain cereal, there will be 280c calories

Jennifer mixes c cups of Crunchy Grain cereal, having 280 calories and s cups of Super Grain cereal, having 240 calories to get a final 1 cup mixture containing 270 calories, which can be expressed mathematically as:

280c + 240s = 270 ------- eqn(1)

Since, s cups of Super Grain cereal and c cups of Crunchy Grain cereal equals 1 cup, of the final mixture

c + s = 1 ------- eqn(2)

from eqn(2),

c = 1 - s

substitute c = 1 - s into eqn(1)

280(1 - s) + 240s = 270

280 - 280s + 240s = 270

- 40s = 270 - 280

-40s = -10

s = (-10)/(-40)

s = 1/4

Therefore, there are 1/4 cups of Super Grain Cereal in the mixture

Ans B

(Hope this helps can I pls have brainlist (crown)☺️)

5 0
3 years ago
Find δs o for the combustion of methane to carbon dioxide and liquid water.
mote1985 [20]

The entropy change ΔS for the combustion of methane to carbon dioxide and liquid water is -242.6 J/mol.K

<h3>What is the Entropy in a Chemical system?</h3>

In a chemical system, Entropy (ΔS) is a quantitative measure of the variety of possible ways to disperse energy inside a chemical system.

  • In an isothermal process, entropy is determined as the quantity of heat transmitted to a system.

The chemical reaction for the combustion of methane can be expressed as:

\mathbf{CH_{4(g)} + 2O_{2(g)} \to CO_{2(g)} + 2H_2O_{(l)}}

The standard entropy of the combustion is expressed as:

\mathbf{\Delta S^0 =(S^0 _{CO_{2}} + 2 \times S^0 _{H_{2}O} )+(-S^0 _{CH_{4}}  -2 \times S^0 _{O_{2}} })

Replacing the standard entropies of the compounds into the above equation, we have:

\mathbf{\Delta S^0 =(213.8 \8 \ J/mol.K + 2 \times69.92 \ J/mol.K  )+(-186.16 \ J/mol.K -2 \times 205.04 \ J/mol.K})

\mathbf{\Delta S^0 =-242.6 \ J/mol.K}

Learn more about entropy here:

brainly.com/question/6364271

6 0
2 years ago
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