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Svetradugi [14.3K]
3 years ago
7

All of the following, except a _ might be studied by a microbiologist.

Chemistry
1 answer:
timurjin [86]3 years ago
8 0
It would be a human egg cell. Microbiologists study microscopic organisms that cause infections, including viruses, bacteria, and fungi+algae
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What is the lead concentration of a saturated solution of lead(II) sulfate containing 0.020 M Na2SO4? Ksp for PbSO4 = 6.3x10-7.
labwork [276]

Answer:

i want to help but  i   d   k. the answer :( sorry i couldnt help

Explanation:

8 0
3 years ago
What is the pressure of 2.50 moles of an ideal gas if it has a volume of 50.0 liters when the temperature is 300.0 K
Ierofanga [76]
Start with the ideal gas equation, <span><span><span>PV=nRT</span> </span><span>PV=nRT</span></span> and rearrange for pressure to get <span><span><span>p=<span><span>nRT</span>V </span></span> </span><span>p=<span><span>nRT</span>V</span></span></span> . You have all the necessary variables in their proper units, so plug em' into the equation to solve for pressure in units of atmospheres.

<span><span><span>P=<span><span>(2.5 mol)(300 K)(0.08206 L atm <span><span>K </span><span><span>−1</span> </span></span> mo<span><span>l </span><span><span>−1</span> </span></span></span><span>50.0 L</span> </span>=1.23 atm</span> </span><span>P=<span><span>(2.5 mol)(300 K)(0.08206 L atm <span>K<span>−1</span></span> mo<span>l<span>−1</span></span></span><span>50.0 L</span></span>=1.23 atm</span></span>

All that needs to be done now is converting atmospheres to mm <span><span><span>Hg</span> </span><span>Hg</span></span> .

<span><span><span>1.23 atm∗<span><span>760 mm Hg</span><span>1 atm</span> </span>=935 mm Hg</span> </span><span>1.23 atm∗<span><span>760 mm Hg</span><span>1 atm</span></span>=935 mm Hg</span></span> .

That value makes sense, since the original pressure in atmospheres was above 1, the pressure in mm <span><span><span>Hg</span> </span><span>Hg</span></span> will be above 760.
7 0
3 years ago
Look up sodium in the Periodic Table (Na). Then, answer the following questions
madreJ [45]
There are 11 electrons in Sodium(Na)
The first shell can hold 2 electrons 
The second shell can hold 8 electrons 
The third shell can also hold 8 electrons but there is only 1 left

so the answer is 2, 8, 1 
4 0
3 years ago
Karen is 17 years ild and has a BMI that indicates appropriate weight.She loves to eat all kinds of food. which strategy will be
lora16 [44]

Answer

She needs to set boundaries

Explanation:

Diet

4 0
2 years ago
Lithium, sodium and potassium are all in group 1 of the periodic table. Which of these has the lowest boiling point?
kvv77 [185]

Answer:

Potassium

Explanation:

In group one of the periodic table both the melting and the boiling points usually decrease down the group.

Now, down the group, it's lithium that comes first, then sodium, then potassium.

Thus, among the 3, potassium is furthermost down the group by virtue of the factor it has the highest atomic number.

Therefore, we can say that potassium has the lowest boiling point among the 3.

5 0
2 years ago
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