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3 years ago

Please help me, I am confused on this.

Chemistry

2 answers:

weeeeeb [17]3 years ago

4 0

Answer:

The First choice is correct

Explanation:

That is the closest example of what is shown

Sophie [7]3 years ago

4 0

Answer:

Explanation:

Makes the most scene

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During the action of a sodium-potassium pump, 50 ATP molecules were spent. Predict how many sodium ions are transported across t

larisa [96]

<span>Yes, each ATP molecule aids in moving 3 Na+ across the membrane.
so 150 </span>sodium ions are transported across the cell membrane when <span>50 ATP molecules are spent.</span>

3 0

2 years ago

The scientific study of the behavior of matter near 0 K is called

pshichka [43]

I think it is called condensated matter

8 0

2 years ago

Read 2 more answers

A sample of water contains 5.24 x 1022 molecules. How many moles are in this sample?

LekaFEV [45]

Answer:

0.087 moles of water

Explanation:

Given data:

Number of molecules of water = 5.24×10²² molecules

Number of moles of water = ?

Solution:

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules of water

5.24×10²² molecules × 1 mol / 6.022 × 10²³ molecules

0.87×10⁻¹ mol

0.087 mol

6 0

3 years ago

A super slow snail can travel 2.2cm in one minute. How far (in pm) can it travel in 24 hours? Please round to appropriate number

Cloud [144]

Answer : The distance covered by slow snail in 24 hours is $3.2\times 10^{13}pm$

Explanation :

As we are given that the a slow snail can travel 2.2 cm in 1 minute. Now we have to calculate the distance covered by slow snail in 24 hours.

First we have to convert 24 hours in minutes.

Conversion used : (1 hour = 60 minutes)

As, 1 hour = 60 minutes

So, 24 hour = 24 × 60 minutes

= 1440 minutes

Now we have to calculate the distance covered by slow snail in 24 hours.

In 1 minute, the distance covered by slow snail = 2.2 cm

In 1440 minute, the distance covered by slow snail = 1440 × 2.2 cm

= 3168 cm

= $3.2\times 10^3cm$

Now we have to convert 'cm' into 'pm'.

Conversion used : $1cm=10^{10}pm$

As, $1cm=10^{10}pm$

So, $3.2\times 10^3cm=\frac{3.2\times 10^3cm}{1cm}\times 10^{10}pm=3.2\times 10^{13}pm$

Therefore, the distance covered by slow snail in 24 hours is $3.2\times 10^{13}pm$

4 0

3 years ago

Would you expect the substance to float or sink in water if mass is 25g and volume is 7 cm

Sonbull [250]

Answer:

Sink

Explanation:

For a substance to float in water, it must be less dense than water. The density of water is 1 g/cm^3. To find the density of the substance, we can do mass/volume, which in this case is 25g/7cm^3. We see that $25/7 > 1$ , so the substance would sink.

4 0

1 year ago