(1)which of the following organelles is the control center of a cell?

What property do protons and electrons have that neutrons do not

evablogger [386]

Answer:What property do protons and electrons have that neutrons don't? Protons and electrons are charged particles. Neutrons have no charge. Why isn't it possible for an atom to have a mass number of 10 and an atomic number of 12?

Explanation:

5 0

3 years ago

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An unknown compound contains only C, H, and O. Combustion of 6.10 g of this compound produced 14.9 g of CO₂ and 6.10 g of H₂O. W

Tanzania [10]

Answer:

The answer to your question is C₃H₃O

Explanation:

Data

Combustion of a compound C, H, O

mass = 6.10 g

mass CO2 = 14.9 g

mass of water = 6.10 g

Reaction

Cx Hy Oz + O2 ⇒ CO2 + H2O

Process

1.- Calculate the moles of carbon

44 g of CO2 -------------- 12 g of carbon

14.9 g of CO2 ------------- x

x = (14.9 x 12) / 44

x = 4.06 g

12 g of C ------------------ 1 mol

4.06 g ------------------- x

x = (4.06 x 1) / 12

x = 0.34 moles

2.- Calculate the moles of hydrogen

18 g of water ------------- 1 g of hydrogen

6.10 g of water ---------- x

x = (6.10 x 1) / 18

x = 0.33 g

1 g of H ---------------- 1 mol of H

0.33 g ---------------- x

x = (0.33 x 1) / 1

x = 0.33 moles of H

3.- Calculate the mass of oxygen

mass of Oxygen = 6.10 - 4.06 - 0.33

= 1.71 g

16 g of O --------------- 1 mol of O

1.71 g of O ------------- x

x = (1.71 x 1) / 16

x = 0.11 moles

4.- Divide by the lowest number of moles

Carbon = 0.34 / 0.11 = 3

Hydrogen = 0.33 / 0.11 = 3

Oxygen = 0.11 /0.11 = 1

5.- Write the empirical formula

C₃H₃O

4 0

3 years ago

Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this:

posledela

Answer: The value of the equilibrium constant Kc for this reaction is 3.72

Explanation:

Equilibrium concentration of $HNO_3$ = $\frac{15.5g}{63g/mol\times 9.5L}=0.026M$

Equilibrium concentration of $NO$ = $\frac{16.6g}{30g/mol\times 9.5L}=0.058M$

Equilibrium concentration of $NO_2$ = $\frac{22.5g}{46g/mol\times 9.5L}=0.051M$

Equilibrium concentration of $H_2O$ = $\frac{189.0g}{18g/mol\times 9.5L}=1.10M$

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_c$