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WINSTONCH [101]
2 years ago
11

What is needed for photosynthesis to take place? (Select all that apply.)

Chemistry
2 answers:
pychu [463]2 years ago
6 0

all but energy i think but if not its a and d

Explanation:

Simora [160]2 years ago
3 0

Answer:

carbon dioxide, water, and sunlight

Explanation:

These things .is needed for photosynthesis to take place. By the way, sunlight is Energy.

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How many grams of sodium sulfide can be produced when 45.3 g Na react with 105 g S?
erastova [34]
Balance the equation: 2Na + S --> Na2S
Using the given amount of the reactants in the reaction, calculate the amount of the product:
45.3g Na x (1 mol/22.99 g)= 1.97 mol of Na
105f S x (1 mol/ 32.06g) = 3.28 mol of S
The limiting reactant would be Na:
<span>1.97 mol Na x (1 mol Na2S/ 2 mol Na) x (78.04g/mol) = 76.87g of Na2S produced</span>
8 0
3 years ago
Sound is energy moving in
galben [10]
Whats do you want to know?
7 0
3 years ago
How would you prepare 3.5 L of a 0.9M solution of KCl?
Fudgin [204]
Calculate the mass of the solute <span>in the solution :

Molar mass KCl = </span><span>74.55 g/mol

m = Molarity * molar mass * volume

m = 0.9 * 74.55 * 3.5

m = 234.8325 g 

</span><span>To prepare 0.9 M KCl solution, weigh 234.8325 g of salt in an analytical balance, dissolve in a beaker, shortly after transfer with the help of a funnel of transfer to a volumetric flask of 100 cm</span>³<span> and complete with water up to the mark, then cover the balloon and finally shake the solution to mix

hope this helps!</span>
8 0
3 years ago
Which best describes the field of chemistry?
qaws [65]

Answer:

Fundamentally, chemistry is the study of matter and change. The way that chemists study matter and change and the types of systems that are studied varies dramatically. Traditionally, chemistry has been broken into five main subdisciplines: Organic, Analytical, Physical, Inorganic, and Biochemistry.

hope this helps :)

5 0
3 years ago
A(n) ________ is an assemblage of minerals bound together, a mass composed of a single mineral, a mass of undifferentiated mater
Sliva [168]

Answer:

Rock

Explanation:

Rock -

It refers to the naturally occuring mass of mineral , with a uniform chemical composition , is referred to as a rock .

In the crust of the Earth , the composition is by the igneous rocks .

<u>There are three main type of rocks , i.e. , </u>

  • sedimentary rocks ,
  • metamorphic rocks ,
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Hence , from the given information of the question ,

The correct term is rock.

8 0
3 years ago
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