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Lostsunrise [7]
3 years ago
15

Which of the following is necessary for photosynthesis?

Chemistry
1 answer:
Shkiper50 [21]3 years ago
4 0

Answer:

OB

Explanation:

Water is necessary. Since during photosynthesis water reacts with carbon dioxide to form glucose and oxygen.

Calcium is a big NO!!.

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What are the balanced chemical equation for these acid and base reactions?
photoshop1234 [79]
It can be easily judged that only the first reaction is an acid base reaction among the three given in the question. So, we can avoid the other two reactions given in the question. Now let us focus and write down the balanced chemical equation of <span>P-Toluidine + HCl.

</span><span>C7H9N + HCl = C7H10N (+) + Cl (-)
</span>
I hope the answer has come to your help.
6 0
3 years ago
A student prepares 150.0 mL of 1.40 M HCl using 35.0 mL of a stock solution. What is the concentration of the stock solution? Us
drek231 [11]

Answer:6.0M

Explanation:see attached photo

3 0
4 years ago
[OH-] for a solution is
solong [7]

Answer:

B = basic

Explanation:

Given data:

[OH⁻] = 5.35×10⁻⁴M

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Solution:

pOH = -log[OH⁻]

pOH = - [5.35×10⁻⁴]

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it is known that,

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The acidic pH is range from zero to less than 7 while 7 pH is neutral and above 7 the pH is basic. So, the given solution is basic.

8 0
3 years ago
Read 2 more answers
1. Is O2 a compound? Explain.
zhuklara [117]
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2. O2 is a molecule because a molecule is one or more of the same element atom.
3. The law of conversion is that the mass of the system will stay the same when transfer takes place. Like if you had an equation O+H2—> H2O the mass will remain the same.

4. It will be equal to 10 because of law of conservation of matter.

5. One observation can be that the compound, reaction you’re observing, has change states.

4 0
3 years ago
Please help I don’t have a lot of time left
Harrizon [31]

Answer:

So sorry if I was wrong but I think it's B. Because from the source states,

https://socratic.org/questions/which-group-on-the-periodic-table-is-the-least-reactive-why

"The least reactive elements are those who have a full outermost valence shell ie they have 8 electrons in the outer shell so elements such as helium, neon, radon or the transition elements."

5 0
2 years ago
Read 2 more answers
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