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11111nata11111 [884]
4 years ago
13

Can someone help me please

Chemistry
1 answer:
Ivahew [28]4 years ago
4 0
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If 150 G of wood started Burning, and 30 G of wood ash was left behind, how many grams of CO2 to gas was released
Svetach [21]

Answer:

120G

Explanation:

From the combustion process, about 120G of carbon dioxide would be released into the atmosphere.

For the chemical reaction to obey the law of conservation of matter, if only ash and carbon dioxide are the product, then the sum of the mass of the product and that of the reactants must be the same.

   In a chemical reaction, matter is not created nor destroyed, but they are simply changed from one form to another.

   Mass of wood burning  = mass of ash + mass of CO₂

              150G  = 30G + mass of CO₂

         mass of CO₂ = 150G  - 30G  = 120G

3 0
3 years ago
Describe how the periodic table differentiates between metals and nonmetals.
dmitriy555 [2]
Most of the elements on the periodic table are metals...generally speaking...metals occur on the left side of the periodic table, and non-metals occur on the right side of the periodic table... 

<span>...check out the periodic table locate at: http://www.elementsdatabase.com/ </span>
<span>look at the second colored periodic table...take a look at the key for this table...notice that the non-metals are colored white or red...all other elements would therefore be metals... </span>
6 0
3 years ago
What is the mass of a 5.00 cm 3 piece of copper having a density of 8.96 g/cm3?
skad [1K]

Mass/volume = density. We know the volume (5 cm cubed) and the density (8.96). We plug these into the equation to find the mass:

M/5 = 8.96

M = 44.8 grams

4 0
4 years ago
The definition of oxidation is loss of electrons. The definition is formation of additional bonds between carbon and oxygen (or
Fynjy0 [20]

Answer:

Oxidation can be defined in many ways:

In terms of electron, <em>Oxidation</em> can be defined as loss of electrons by an atom or ion or a molecule during a reaction.

In terms of oxygen transfer, <em>oxidation</em> maybe defined as a substance that gains oxygen or loses hydrogen.

It can also be defined as a process in which a carbon atom gains bond to more electronegative atom such as oxygen.

8 0
3 years ago
Each astronaut produces 8.8 × 102 g CO2 per day that must be removed from the air on the shuttle. If a typical shuttle mission i
suter [353]

The reaction of removing CO2 using LiOH is the following:

2 LiOH + CO2 -----> Li2CO3 + H2O

By solving the amount of CO2 the LiOH can scrub:

(3.50 × 10^4 g LiOH) (1 mol LiOH/ 24 g LiOH) ( 1 mol CO2 / 2 mol LiOH) ( 44 g CO2 /1 mol CO2) = 32, 083.33 g CO2 it can scrub

<span>Since number of astronaut = 32, 083.33 g / 9 (8.8 × 10^2) = 4 astronaut</span>

7 0
3 years ago
Read 2 more answers
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