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ycow [4]
3 years ago
12

Learn and Danna want 100percent guarantee that they will not have an unplanned pregnancy with prevention should the use

Health
1 answer:
VMariaS [17]3 years ago
4 0
Birth control and condoms
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A 3.0% (m/v) potassium chloride solution has a volume of 25.0 mL. How many moles of potassium chloride are in the sample?
Oduvanchick [21]
Using your knowledge of m/v = g/mL, you can start by putting that in the equation as:

\frac{3g}{100mL}

And you know that the volume is 25 mL. So you could put this into the equation as:

\frac{25mL}{1}

And you also know that the molar mass of KCl is 74.55g (K = 39.1 g/mol and Cl = 35.45 g/mol. Add them together to get 74.55g/mol).

We can then put this in the equation as:

\frac{1mol}{74.55g}

Then, we can mulitply them all together:

\frac{3g}{100mL}*  \frac{25mL}{1} * \frac{1mol}{74.55g}=0.01 mol

And now we know that there are 0.01 moles of KCl in the sample.
8 0
3 years ago
Cell test :/ thank you for helping!
elena55 [62]

Answer:

the cell membrane

Explanation: Cell membrane protects animals cells from harmful chemicals. Explanation: The cell membrane is a tough covering composed of the phospholipids and proteins and forms a bilayer around the cells

mrk me brainliest please

3 0
3 years ago
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Kyle is a nursing assistant at a hospital. Part of his job is making sure that there are no issues with the proper storage of ch
JulijaS [17]
Hey! The answers (if the question requires two answers) is chemical spills and fires. Of only one answer is required then fires.

Reason for first answer (chemical spills and fires) it mentions that Kyle makes sure that "the storage of chemicals--" are all correct, having that being said he makes sure that there are no chemical spills. The reason for fire is becuase it mention that he makes sure the oxygen tanks are properly stored. Well certain chemicals (when mixed with oxygen) can cuase a fire, therefore fire is a good answer for rather it's a two options answer or just one. Hope this helps!
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3 years ago
Split-brain patients have had surgery to cut the
stira [4]
Split-brain patients have had surgery to cut the  corpus callosum. Such a phenomenon was studied and monitored by  two neuroscientists Roger Sperry  and Michael Gazzaniga. After hard operation, patients felt quite good although the expectations weren't that good. Patients could perform all the activities they did before surgery, that was very surprising and innovational. But after several experiments, doctors discovered side effects and got back  to study this process.
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3 years ago
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Which type of research is subjective and process oriented
valentina_108 [34]

Answer:

Qualitative research im pretty sure

Explanation:

5 0
2 years ago
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