Find the mass of 1 mole of CuS

How many total atoms of sulfur (s) are represented by the chemical formula 2so2? 1 2 4?

vekshin1

There are 6 atoms because so2, which is sulfur dioxide, has a total of 3 subscripts that is multiplied by 2 because of the coefficient in front of so2.

6 0

4 years ago

This image of the volcano Sapas Mons on Venus is based on images taken by the Soviet spacecraft Venera 13 and

leva [86]

Answer:

the answer is c

Explanation:

5 0

3 years ago

If Δ[NO]/ Δt = –20.0 M/s under a given set of conditions, what are the rates of change of [N2] and [H2O]?

Digiron [165]

Answer:

the rate of change of $[N_2]$ = 10.0 M/s

the rate of change of $[H_2O]$ = 20.0 M/s

Explanation:

Given that $\frac{d[NO]}{dt}$ = 20.0 M/s

The equation for the reaction can be written as:

$2 NO_{(g)} + 2H_2--->2H_2}O{(g)}+N_2_{(g)}$

The rate of change of $[N_2]$ can be calculated as:

$\frac{-1}{2} \frac{d[NO]}{dt} = \frac{d[N_2]}{dt}$

$\frac{-1}{2} (-20.0M/s)= \frac{d[N_2]}{dt}$

$-1 *-10.0M/s= \frac{d[N_2]}{dt}$

$10.0M/s= \frac{d[N_2]}{dt}$

$\frac{d[N_2]}{dt}= 10.0M/s$

∴ the rate of change of $[N_2]$ = 10.0 M/s

The rate of change of $[H_2O]$ can be calculated as:

$\frac{-1}{2} \frac{d[NO]}{dt} = \frac{+1}{2} \frac{d[H_2O]}{dt}$

$\frac{-1}{2} (-20.0M/s)= \frac{+1}{2} \frac{d[H_2O]}{dt}$

$10.0 M/s= \frac{+1}{2} \frac{d[H_2O]}{dt}$

$10.0 M/s*2= \frac{d[H_2O]}{dt}$

$\frac{d[H_2O]}{dt} = 20.0 M/s$

∴ the rate of change of $[H_2O]$ = 20.0 M/s

5 0

3 years ago

Global climate has changed in the pasted due to ____ and ___?

Anettt [7]

Answer:Explained

Explanation:

Global Climate has changed in past due to Global warming and burning of fossil fuel.

Global warming is increasing the earth temperature causing the earth to be more warm.

Similarly Burning of fossil fuel also causing the temperature to rise and creating pollution.

7 0

4 years ago

In making wine, glucose (C6H12O6) is fermented to produce ethanol (C2H5OH) and carbon dioxide (CO2), according to the following

djyliett [7]

Answer:

a) Theoretical yield of ethanol = 34.778 g

b) % yield of ethanol = 37.38%

Explanation:

a)

C6H12O6 → 2 C2H5OH + 2 CO2

Molar mass of glucose = 180.156 g/mol

Molar mass of ethanol = 46.07 g/mol

amount of glucose taken = 68.0 g

No. of mole = Amount of substance in g/Molar mass

[text]No. of mole = \frac{68.0\;}{180.156\; g/mol} =0.37745 mol[\text]

from reaction stoichiometry, one mole of glucose fermented two form 2 mole of ethanol.

therefore, 0.37745 mol of glucose will form 0.37745*2 moles of ethanol.

No. of moles of ethanol formed = 0.7549 mol

theoretical yield of ethanol = 0.7549 x 46.07 = 34.778 g

b)

$\% yield=\frac{Actual yield}{Theoretical yield}\times 100$

Actual yield = 13.0 g

Theoretical yield = 34.778 g

$\% yield=\frac{13.0 \;g}{34.778\; g}\times 100$

= 37.38%

4 0

3 years ago