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Setler79 [48]
3 years ago
12

True/False: The Northern Hemisphere experiences winter when Earth is farthest from the sun.

Chemistry
1 answer:
baherus [9]3 years ago
7 0

Answer:

False

Explanation:

Apex

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If a drop of blood is 0.05 mL, how many drops of blood are in a blood collection tube that holds 8 mL ?
inn [45]
160 drops of blood is needed 
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3 years ago
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2K + Cl2 —&gt; 2KCl <br><br> how many moles of KCl will be produced if you have 6.0 moles of K?
antiseptic1488 [7]

Answer:

6 moles

Explanation:

4 0
3 years ago
Calculate the concentration of hydroxide ions (OH-) in a solution with a pOH of 2.52?
vodomira [7]

Answer:

The concentration of hydroxide ions is 3.02*10⁻³ M

Explanation:

The pOH (or OH potential) is a measure of the basicity or alkalinity of a contamination and is defined as the negative logarithm of the activity of the hydroxide ions. That is, the concentration of OH- ions:

pOH= -log [OH-]

The pOH has a value between 0 and 14 in aqueous solution, the solutions with pOH being greater than 7 being acidic, and those with pOH less than 7 being basic.

If pOH= 2.52 then

2.52= -log [OH-]

[OH-]= 3.02*10⁻³ M

<u><em>The concentration of hydroxide ions is 3.02*10⁻³ M</em></u>

<u><em></em></u>

3 0
3 years ago
The lines in an element's atomic spectrum result from
IRINA_888 [86]

Answer:

electron moving from a lower energy to a higher level of energy

7 0
3 years ago
Which construction can you use to prove the Pythagorean Theorem based on similarity of triangles?
Vinvika [58]
<span>To prove the Pythagorean Theorem based on similarity of triangles, you can always use the 2nd construction.

The 2nd construction is achieved by drawing a perpendicular line joining between the right angle of the triangle and the hypothesis (as shown in the attachment).

Note: The Pythagorean Theorm is stated as follows:
(length of hypotenuse)^2  = (length of side1)^2 + (length of side2)^2</span>

7 0
4 years ago
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