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Svet_ta [14]
2 years ago
5

If 45.0 mL of a 4.00 M sodium sulfate (Na2SO4) solution is used for a reaction, how many moles of solute were present in the sol

ution?
____ moles
Chemistry
1 answer:
mixas84 [53]2 years ago
6 0
797 jenehsbsehshehehbehshehhebwbbss
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In photosynthesis, the reactants are more stable than the products. However, both the products and reactants are stable. Therefo
My name is Ann [436]

Answer:

A.) Absorb and store

Explanation:

The reaction for photosynthesis is:

6CO_{2}+ 12H_{2}  O → C_{6} H_{12} O_{6}  +6H_{2} O  (reaction conditions: light and chlorophyll)

<em>carbon dioxide + water → glucose + water</em>

<em />

This means light energy is <u>absorbed</u> and <u>stored</u> as sugar molecules and energy for the plant

Therefore, the photosynthesis reaction will <u>  absorb  </u> energy and <u>  store  </u> it in the chemical bonds.

3 0
4 years ago
Read 2 more answers
A bar of metal has a volume of 4.5 cm3 and a mass of 33 g. What is the<br> density of the metal?
raketka [301]

Answer:

the density of metal is 7.33 g/cm³.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Given data:

Volume of bar metal = 4.5 cm³

Mass of bar metal = 33 g

Density = ?

Solution:

d = m/v

d = 33 g/ 4.5 cm³

d = 7.33 g/cm³

8 0
3 years ago
Which is an example of a free expansion of a gas?
katovenus [111]
Free expansion refers to uninhibited or provoked expansion, i.e. it’s expanding on its own, by itself. The only situation in which this occurs is B, as the gas is allowed to expand by itself. A involves a reaction that forces the expansion, C involves the gas performing work, and D involves thermal expansion.

Hope this helps!
3 0
3 years ago
What is the name of CuCO3 ???
lilavasa [31]
Basic copper carbonate
8 0
3 years ago
If 25.8 grams of BaO dissolve in enough water to make a 212-gram solution, what is the percent by mass of the solution?
Maksim231197 [3]
The answer is A. 12.2% BaO

Below is the solution as to how the answer was generated:

Let:

25.8g = mass of solute

212g = mass solution

Equation:

% = (mass of solute / mass solution) x 100

Substitute the given values to the equation:

% = (25.8 / 212) x 100

% = 0.122 x 100

= 12.2%
5 0
3 years ago
Read 2 more answers
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