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Katyanochek1 [597]
3 years ago
12

To what temperature must

Chemistry
1 answer:
KatRina [158]3 years ago
8 0

Answer:

586 C degrees

Explanation:

because of gas laws. Thanks hope this helps please vote it up!

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The decomposition of a compound at 400⁰C is first order with half-life of 1570 seconds. what fraction of an initial amount of th
kirill115 [55]

Answer: After 4710 seconds, 1/8 of the compound will be left

Explanation:

Using the formulae

Nt/No = (1/2)^t/t1/2

Where

N= amount of the compound  present at time t

No= amount of compound present at time t=0

t= time taken for N molecules of the compound to remain = 4710 seconds

t1/2 = half-life of compound  = 1570 seconds

Plugging in the values, we have  

Nt/No = (1/2)^(4710s/1570s)

Nt/No = (1/2)^3

Nt/No= 1/8

Therefore after 4710 seconds, 1/8 molecules of the compound will be left

5 0
3 years ago
What is the empirical formula for a compound that is 94.1% oxygen and 5.90 % hydrogen?
RSB [31]

Answer:

The empirical formula would be N₂Os * Page 2 Calculate the empirical formulaof a compound that is 94.1% oxygen, 5.9% hydrogen.

6 0
3 years ago
43. A stock glucose standard has a concentration of 1,000 mg/dL. A 1/5 dilution of this standard is made. What would be the fina
Nat2105 [25]

The final concentration of the diluted standard is 0.2 mg/dL.

<h3 /><h3>What is concentration of glucose standard after 1/5 solution?</h3>

Using the dilution formula:

  • C1V1 = C2V2

where

  • C1 is initial concentration
  • V1 initial volume
  • C2 is final concentration
  • V2 is final volume.

Assuming a final volume of 100 mL, and since a 1/5 dilution is made:

C1 = 1.00 mg/dL

V1 = 20

C2 = ?

V2 = 100 mL

C2 = C1V1/V2

C2 = 20 × 1/100

C2 = 0.2 mg/dL

Therefore, the final concentration of the diluted standard is 0.2 mg/dL.

Learn more about dilution at: brainly.com/question/24881505

6 0
2 years ago
Which of the following is a measurement of an object's mass?
Brilliant_brown [7]

Answer:

10 Kilograms

Explanation:

"millimetres" is a unit of measurement and is used for measuring distances.

"newton" is a unit of weight and is used to represent the weight of an object

:kilograms" is the one used for measuring mass

5 0
3 years ago
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
uysha [10]

Answer:

C. slightly basic

Explanation:

0-7 = acidic

7 = neutral

7-14 = basic

- Since the pH is just over 7, the answer would be slightly basic.

- Hope this helps! Please let me know if you need a further explanation.

6 0
3 years ago
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