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nlexa [21]
1 year ago
11

This long unit of measurement can be used to measure great distances. It *

Chemistry
1 answer:
yawa3891 [41]1 year ago
7 0
Kilometer.

Kilo=1,000
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1. How many liters of Co, gas are produced from 3.5 moles of 02​
Pavel [41]

The Equation of reaction

C + O2 === CO2

First Blank spot would be

---- 3.5moles of O2

2nd spot

Up.... 1mole of CO2

Down ---- 2moles of Oxygen atoms

3rd spot

Up... --- 22.4L of CO2(1mole of any gas at STP contains 22.4L)

Down---- 1mole of CO2

Final answer --- 3.5 x 1/2 x 22.4

=39.2L of CO2

7 0
3 years ago
A sheet of aluminum foil has a total area of 1.000 m2 and a mass of 3.636 g. What is the thickness of the sheet in millimeters?
olga2289 [7]

Answer:

t=1.34\times 10^{-3}\ mm

Explanation:

Given that,

Area of sheet of Aluminium foil is 1 m²

Mass of the sheet = 3.636 g

The density of Aluminium, d=2.699\ g/cm^3

We need to find the thickness of the sheet in millimeters.

The density of an object is given in terms of its mass and volume as follows :

d=\dfrac{m}{V}

V = volume, V = A×t, t = thickness of the sheet

So,

d=\dfrac{m}{A\times t}\\\\t=\dfrac{m}{Ad}\\\\t=\dfrac{3.636\ g}{10000\ cm^2\times 2.699\ g/cm^3}\\\\t=0.000134\ cm

Since, 1 cm = 10 mm

So,

t = 0.00134 mm

or

t=1.34\times 10^{-3}\ mm

8 0
3 years ago
Formaldehyde (h2co) reacts with oxygen to form co2 and h2o. how many moles of co2 will be produced from reacting 2 moles of h2co
bogdanovich [222]
Answer:
            2 mol of CO₂

Solution:

The reaction is as follow,

                              H₂CO  +  O₂     →     CO₂  +  H₂O

According to this equation,

                         1 mole of H₂CO produces  =  1 mole of CO₂
So,
                   2 moles of H₂CO will produce  =  X moles of CO₂

Solving for X,
                      X  =  (2 mol × 1 mol) ÷ 1 mol

                      X  =  2 mol of CO₂
7 0
3 years ago
Read 2 more answers
Kidneys help regulate the concentration of which substance in the blood?
krek1111 [17]
Bicarbonate, sodium, potassium
are regulated by the kidneys.
3 0
3 years ago
One piece of evidence that a chemical reaction occurs when baking soda is added to vinegar
g100num [7]
It explodes all over the place
4 0
3 years ago
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