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RSB [31]
2 years ago
15

50 POINTS! Which SIX statements are correct about CELLULAR RESPIRATION?

Chemistry
2 answers:
tatyana61 [14]2 years ago
8 0

Which SIX statements are correct about CELLULAR RESPIRATION?

1, 3,4, 7 ,9, 10,

galina1969 [7]2 years ago
5 0

There is no 6 statements listed making the question incomplete.

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A-potassium<br>B-lead<br>C-iron<br>D-magnesium<br>E-zinc<br>​
viktelen [127]

The unknown substance : Lead

<h3>Further explanation</h3>

Given

Density of element

mass of unknown substance = 40 g

volume = 3.5 cm³

Required

The density of unknown substance

Solution

Density is the ratio of mass per unit volume  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}

Input the value to find the density of an unknown substance :

ρ = 40 g : 3.5 cm³

ρ = 11.43 g/cm³

If we look at the table, the substance which has a density of 11.43 is Lead

6 0
2 years ago
Question 7
Law Incorporation [45]

Answer:

84.3 g of nitrogen triiodide is the theoretical yield.

Explanation:

Hello there!

In this case, according to the chemical reaction:

N_2 + 3I_2 \rightarrow 2NI_3

It is possible to compute the theoretical yield of nitrogen triiodide by each reactant via stoichiometry as shown below:

m_{NI_3}^{by\ N_2}=4.49gN_2*\frac{1molN_2}{28.01gN_2} *\frac{2molNI_3}{1molN_2}*\frac{394.72gNI_3}{1molNI_3}  =126.55gNI_3\\\\m_{NI_3}^{by\ I_2}=81.3gI_2*\frac{1molI_2}{253.81gI_2} *\frac{2molNI_3}{3molI_2}*\frac{394.72gNI_3}{1molNI_3}  =84.29gNI_3

Therefore, we infer that the smallest amount is the correct theoretical yield as it comes from the limiting reactant, in this case, diatomic iodine as it yields 84.3 g (three significant figures) of nitrogen triiodide as the theoretical yield; incidentally, nitrogen acts as the excess reactant.

Best regards!

3 0
2 years ago
What is the mass, in grams, of one mole of any substance known as?
Elena-2011 [213]

Answer: molar mass

Explanation:

The molar mass of any substance is it's relative molecular mass expressed in grams. Hence, the relationship between molar mass of any substance and mass, in grams, of one mole of any substance is mathematically expressed as:

Number of moles =

(Mass in grams ➗ Molar mass)

Hence, the unit of molar mass is gram per mole (g/mol)

Thus, molar mass is the answer.

3 0
3 years ago
What is the mass of a gold bar that is 7.379*10^-4 m^3 in volume?
NISA [10]
Mass to volume
M^3 --> cm^3
Cm^3 --> mL
Centi = 10*-2
7.379*10-4 / 1*10-2 = .07379

8 0
3 years ago
Muscle tissue is made up of cells that contract and release to produce movement. Which process provides the energy that the cell
Scrat [10]
I think you mean miosis because mitosis is cell reproduction, photosynthesis is to do with light, respiration is breathing and meiosis is division of cells
5 0
3 years ago
Read 2 more answers
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