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dybincka [34]
3 years ago
11

after a fire, the ashes have less mass and take up less space than the trees and vegataion before the fire. how can this be expl

ained in terms of the Law of Conservation of mass?
Chemistry
2 answers:
BARSIC [14]3 years ago
5 0

Answer:

this can be explained in terms of the Law of Conservation of mass because you just have to multiply the number of amount that was lost during the fire by 5

Explanation:

so if they lost 489 miles of mass from the fire, then u will have to multiply 489 by 5. 489x5=2445

stira [4]3 years ago
4 0
Fire expends ENERGY which is a by-product of conversion of matter. 

<span>The calories or therms of a fire equal a certain amount of mass. </span>

<span>When MATTER (Electron) and ANTI-MATTER (Positron) collide they don't inhillate each other with nothingness, they always realse TWO gamma particles. </span>

<span>The ENERGY of the TWO gamma particles CONSERVES the MASS of the ELECTRON and The POSITRON </span>

<span>This is what Einstein meant by E=mc2 </span>

<span>ENERGY has physical properties than can be measured. </span>

<span>These properties equal the mass that no longer exists after you measure the mass BEFORE and AFTER </span>

<span>The AFTER MASS + the ENERGY MUST equal the BEFORE MASS to at least 99.999% </span>

<span>You must take heat, light and other PARTICLES into consideration. </span>

<span>Their MASS plus their ENERGY</span>
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Answer:

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How many moles of O atoms are present in a 254 g sample of carbon dioxide?
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Answer:

11.6mol

Explanation:

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One way to refine iron from iron ore is to heat the ore with hydrogen gas at high temperatures. Which change increases the amoun
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Answer: Adding Hydrogen Gas

Explanation:

The Reduction Reaction that occurs during the refinement of Iron Ore is as follows:

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Since Hydrogen Gas is a reactant in the equation with Iron ore , adding more hydrogen gas will shift the reaction toward the right side, increase the amount of  refined iron produced.

8 0
4 years ago
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When a solution of ammonium chloride, NH4Cl, is added to a solution of lead (II) nitrate , Pb(NO3)2, a white precipitate, PbCl2,
slavikrds [6]

Answer:

B) 2NH_4^+_{(aq)}+2Cl^-_{(aq)}+Pb^{2+}_{(aq)}+2NO_3^-_{(aq)}\rightarrow PbCl_2_{(s)}+2NH^{4+}_{(aq)}+2NO_3^-_{(aq)}

Explanation:

The total ionic equation contains all the species in the reaction in the ionic form.

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

Spectator ions are also written in total ionic equations.

The chemical equation is:

2NH_4Cl_{(aq)}+Pb(NO_3)_2_{(aq)}\rightarrow PbCl_2_{(s)}+2NH_4NO_3_{(aq)}

The total ionic equation is -

2NH_4^+_{(aq)}+2Cl^-_{(aq)}+Pb^{2+}_{(aq)}+2NO_3^-_{(aq)}\rightarrow PbCl_2_{(s)}+2NH^{4+}_{(aq)}+2NO_3^-_{(aq)}

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