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3 years ago

What happens to energy and matter when matter is burns?pls help :p

Chemistry

1 answer:

11111nata11111 [884]3 years ago

7 0

<h2>question:what happens to energy and matter when matter is burns?</h2><h2>answer:In burning, the two atoms or molecules will combine and release energy. Usually one of the two molecules is oxygen or something else chemically like it called an oxidizer. When the molecules combine and release energy, it is released in the form of heat and often light.</h2>

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The monomer of poly(vinyl chloride) has the formula C2H3Cl. If there are 1,565 repeat units in a single chain of the polymer, wh

monitta

Answer:

$\large \boxed{9.780 \times 10^{4}\text{ u}}$

Explanation:

The molecular mass of a monomer unit is:

C₂H₃Cl = 2×12.01 + 3×1.008 + 35.45 = 24.02 + 3.024 + 35.45 = 62.494 u

For 1565 units,

$\text{Molecular mass} = \text{1565 units} \times \dfrac{\text{62.494 u}}{\text{1 unit }} = \mathbf{9.780 \times 10^{4}}\textbf{ u}\\\\\text{The molecular mass of the chain is $\large \boxed{\mathbf{9.780 \times 10^{4}}\textbf{ u}}$}$

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3 years ago

What is the purpose of finding oxidation states in the half-reaction method for balancing equations?

vazorg [7]

Answer:

B. To Identify the half reactions for the equation

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3 years ago

Predict the whether the following reactions are possible or not.

vova2212 [387]

Answer:

1. No

2. No

3. Yes

4. No

5. Yes

6. No

Explanation:

Use the reactivity series. If the element is above it, it is more reactive. More reactive elements can displace less reactive elements from their compounds.

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3 years ago

Describe the mass of the reactants and products given the balanced chemical reaction.

Andru [333]

Answer:

The mass of the reactants equals the mass of the products.

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3 years ago

How many moles are there in 132g of CO2

vovangra [49]

You can use grams to moles and moles to grams. In your case just grams to moles. So since you're given grams, you would divide that by the molar mass of CO2 because that's how many grams are in one mole. The mass for Carbon is 12.0104 g/mol and Oxygen it's 15.9994 g/mol so to find the molar mass you would add 12.0104 + (2*15.9994) which gives you a molar mass of 44.0095 g/mol. You divide your given mass (132g) by the molar mass, so there's 2.9993 moles or approximately 3 moles in 132 g of CO2.

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4 years ago

What happens to energy and matter when matter is burns?pls help :p​

What happens to energy and matter when matter is burns?pls help :p