Answer in the blank 1. Broken glass jar 2. Food scraps 3. Cooked rice 4. Plastic bags 5. Water

Chemistry

1 answer:

blagie [28]3 years ago

6 0

I don't understand ur question

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What is the mass of a sample of iron if that sample lost 2300J of heat energy when it cooled from 80 oC to 30°C? The specific he

irakobra [83]

102 grams.
Equation:
Quantify of heat = mass x specific heat x difference in temperature
We have: quantity of heat : 2300J
specific heat: .449 J/g
difference in t: 80 - 30 = 50
Solve for mass: 2300 = mass x 0.449 x 50
mass = 102.449
2 sig-figs --> 102 grams

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3 years ago

Warm air _____.

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Answer:

cools as it rises, then sinks back down

Explanation:

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Which is made by weathering? A. sediments B. minerals C. ash D. magma

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3 years ago

Silicon reacts with carbon dioxide to form silicon carbide sic and silicon dioxide

andrew-mc [135]

The question is incomplete, here is the complete question:

Silicon reacts with carbon dioxide to form silicon carbide and silicon dioxide. Write the balanced chemical equation.

Answer: The balanced chemical equation is written below.

Explanation:

Every balanced chemical equation follows law of conservation of mass.

A balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on product side.

The balanced chemical equation for the reaction of silicon and carbon dioxide follows:

$2Si+CO_2\rightarrow SiC+SiO_2$

By Stoichiometry of the reaction:

2 moles of silicon reacts with 1 mole of carbon dioxide gas to produce 1 mole of silicon carbide and 1 mole of silicon dioxide

Hence, the balanced chemical equation is written above.

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3 years ago

Answer in the blank 1. Broken glass jar 2. Food scraps 3. Cooked rice 4. Plastic bags 5. Water​

Answer in the blank 1. Broken glass jar 2. Food scraps 3. Cooked rice 4. Plastic bags 5. Water