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USPshnik [31]
3 years ago
6

After a hormone enters the bloodstream, it is transported throughout the body, but the hormone only affects certain cells. The r

eason only certain cells are affected is that the membranes of these cells have specific
Chemistry
1 answer:
USPshnik [31]3 years ago
5 0
The membranes have specific receptors, you're welcome :).
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Precipitation _____. occurs equally all over the globe. is the change in state from a gas to a liquid. happens when ice changes
babunello [35]

Precipitation exceeds evaporation over the land.

5 0
3 years ago
In a labratory activity the density of a sample of vanadium is determined to be 6.9g/cm^3 at room temperature. what is the perce
Snowcat [4.5K]

Answer:

c : 13%

Explanation:

Data Give:

Experimental density of vanadium = 6.9 g/cm³

percent error = ?

Solution:

Formula used to calculate % error

  % error = [experimental value -accepted value/accepted value] x 100

The reported accepted density value for vanadium = 6.11 g/cm³

Put value in the above equation

                  % error = [ 6.9 - 6.11 / 6.11 ] x 100

                  % error = [ 0.79 / 6.11 ] x 100

                  % error = [ 0.129] x 100

                  % error = 12.9

Round to the 2 significant figure

% error = 13 %

So, option c is correct            

7 0
3 years ago
Question 7 (1 point)<br> Classify as a compound or element?<br> (NaCl<br> Blank 1:
IgorLugansk [536]

Answer:

That is a compound. If it was an element it would either just be Na or Cl.

5 0
3 years ago
Read 2 more answers
What is the percent error when a student measures the volume to be 19.3 liters when
katrin2010 [14]

Answer:

The answer is

<h2>13.84 %</h2>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual volume = 22.4 L

error = 22.4 - 19.3 = 3.1

The percentage error is

P(\%) =  \frac{3.1}{22.4}  \times 100 \\  = 13.839285714...

We have the final answer as

<h3>13.84 %</h3>

Hope this helps you

7 0
3 years ago
How many days would it take for a crepe myrtle tree to grow 1 cm in height if it grows 3.38 feet per year?
ololo11 [35]
It's very easy, it's depending mainly on converting a mathematical unit:

When 1 Cm = 0.0328084 Ft
So, we assume that: 
in    1 year → it grows 3.38 Ft

So  X(years)→ 0.0328084

∴X(years) = 0.0328084 * 3.38 = 0.0097 year

We have to convert this unit form years to days by:

       1 year = 365 days
So,  0.0097 =  X (days)
∴X(days)= 365 * 0.0097 = 3.5 days

So it will take 3.5 days to grow up

7 0
3 years ago
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