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2 years ago

During which step in the pcr cycle do primers form bonds with a single-stranded template?.

Chemistry

1 answer:

shutvik [7]2 years ago

5 0

Answer: The first steps

Explanation: science

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5. A 5.00 g sample of an unknown substance was heated from 25.2 C to 55.1 degrees * C , and it required 133 to do so. Identify t

Leviafan [203]

Answer:

Aluminum

Explanation:

Given

$T_1 = 25.2^oC$

$T_2 = 55.1^oC$

$m = 5.00g$

$\triangle Q= 133J$

<em>See attachment for chart</em>

Required

Identify the unknown substance

To do this, we simply calculate the specific heat capacity from the given parameters using:

$c = \frac{\triangle Q}{m\triangle T}$

This gives:

$c = \frac{\triangle Q}{m(T_2 - T_1)}$

So, we have:

$c = \frac{133J}{5.00g * (55.1C - 25.2C)}$

$c = \frac{133J}{5.00g * 29.9C}$

$c = \frac{133J}{149.5gC}$

$c = 0.89\ J/gC$

From the attached chart, we have:

$Al(s) = 0.89\ J/gC$ --- The specific heat capacity of Aluminum

<em>Hence, the unknown substance is Aluminum</em>

7 0

2 years ago

Which of the following is not an example of a molecule?

dybincka [34]

Answer:

Explanation:

A molecule is the smallest physical unit of a substance that can exist independently, consisting of 2 or more atoms chemically combined

He is one atom of Helium

4 0

3 years ago

Which of the following factors does not affect a reaction rate?

Natalka [10]

The correct answer is C

4 0

2 years ago

Klklklkllkllklkklkllkl

Svetradugi [14.3K]

Answer:

klklklkllkllklkklkllkl

Explanation:

Cuz thats what you said.. and why not :)

5 0

2 years ago

11. Given the following average bond energies in kJ/mol?

sdas [7]

Answer:

hjuijhbhjijnjnjghbgkjfgvv

Explanation:

8 0

3 years ago