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NeX [460]
3 years ago
6

The main characteristic of the first stage of photosynthesis is

Chemistry
1 answer:
weeeeeb [17]3 years ago
6 0
"is the the production of hydrogen and energy. The process of photosynthesis happens in two stages thelight-dependent reactions and the Calvin cycle (light-independent reactions)"
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Calculate a reasonable amount (mass in g) of your unknown acid to use for a titration. You will want about 30 mL of titrant to g
Vinil7 [7]

Answer:

"0.60 g" is the appropriate solution.

Explanation:

The given values are:

Volume of base,

= 30 ml

Molarity of base,

= 0.05 m

Molar mass of acid,

= 400 g/mol

As we know,

⇒  Molarity=\frac{Number \ of \ moles \ of \ base}{Number \ of \ solution}

On substituting the values, we get

⇒           0.05=\frac{Number \ of \ moles \ of \ base}{30\times 10^{-3}}

⇒  Number \ of \ moles \ of \ base=0.05\times 30\times 10^{-3}

⇒                                             =1.5\times 10^{-3}  

hence,

⇒  Moles \ of \ acid=\frac{Mass \ of \ acid}{Molar \ mass \ of \ acid}

On substituting the values, we get

⇒  1.5\times 10^{-3}=\frac{Mass \ of \ acid}{400}

⇒  Mass \ of \ acid=1.5\times 10^{-3}\times 400

⇒                         =0.60 \ g

8 0
3 years ago
What are the purposes of theories in science?
Leto [7]

Answer:

Scientific theories are testable and make falsifiable predictions. They describe the causes of a particular natural phenomenon and are used to explain and predict aspects of the physical universe or specific areas of inquiry (for example, electricity, chemistry, and astronomy).

A good theory in the theoretical sense is (1) consistent with empirical observations; is (2) precise, (3) parsimonious, (4) explanatorily broad, and (5) falsifiable; and (6) promotes scientific progress (among others; Table 1.1).

5 0
4 years ago
PLEASE ANSWER FAST!!!!!!!!!!!!!!!
Savatey [412]

Answer:

The answer is A. a wave of vibrating electric and magnetic energy.

6 0
3 years ago
what does NaBr + Ca(OH)2 -> CaBr2 + NaOH make, what rection for an example rust. is it aa chemical reaction? please reply asa
Semenov [28]

FORMULA FOR RUST IS FE2O3.XH20

3 0
4 years ago
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What makes alkali metals a family?​
navik [9.2K]

Answer:

The metals in this group are lithium, sodium, potassium, rubidium, cesium, and francium. The gas hydrogen is also put in this group because it shares similar reactivity with the alkali metals.

I don't know if this is what you wanted or not sorry if it isn't

3 0
3 years ago
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