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hodyreva [135]
3 years ago
15

Consider the chemical reaction

Chemistry
1 answer:
finlep [7]3 years ago
6 0

Explanation:

aC2H6 + bCO2 + cH2O → dC2H5OH

The balanced equation for the reaction is given as;

6C2H6 + 2CO2 + 3H2O → 7C2H5OH

Check!

Oxygen

Reactant = 2 * 2  +  3  =  7

Product = 7

Carbon

Reactant = 6 * 2  +  2  = 14

Product = 7 * 2 =14

Hydrogen

Reactant = 6 * 6  + 3 * 2  = 42

Product = 7 * 5 + 7 * 1 = 42

a = 6

b = 2  

c =  3

d = 7

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Answer:

A: dependent variable

B: experimental group

C: independent variable

D: control variables

E: control group

Explanation:

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3 years ago
The main reason that it's important to test only one variable at a time is so that
bonufazy [111]

D. quantitative data can be recorded.

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6. 7. A hyperbaric chamber has a volume of 200. L. (a) How many moles of oxygen are needed to fill the chamber at room temperatu
Otrada [13]

Answer:

a) 24.7 mol

b) 790 g

Explanation:

Step 1: Given data

  • Volume of the chamber (V): 200. L
  • Room temperature (T): 23 °C
  • Pressure of the gas (P): 3.00 atm

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15

K = 23°C + 273.15 = 296 K

Step 3: Calculate the moles (n) of oxygen

We will use the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 3.00 atm × 200. L/(0.0821 atm.L/mol.K) × 296 K = 24.7 mol

Step 4: Calculate the mass (m) corresponding to 24.7 moles of oxygen

The molar mass (M) of oxygen ga sis 32.00 g/mol. We will calculate the mass of oxygen using the following expression.

m = n × M

m = 24.7 mol × 32.00 g/mol = 790 g

6 0
3 years ago
4. What are two careers in science?<br>​
In-s [12.5K]

Answer:

the two careers in science are :

1) Engineer

2)Doctor

Explanation:

5 0
3 years ago
Read 2 more answers
Name MgSo4.7H2O /Cs3PO4.H2O
Radda [10]

Answer:

MgSo4.7H2O = Magnesium sulfate

Cs3PO4.H2O = Cesium Phosphate

Hope this helps!

5 0
3 years ago
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