2 years ago

PLZ answer asp The image shows the combustion of methane. Which equation represents this chemical reaction?

2 answers:

7 0

The chemical reaction that would represent the combustion of methane would be CH4 + 2O2 = CO2 + 2H2O. Combustion reactions are reactions which involves a substance burning in oxygen.

tankabanditka [31]2 years ago

4 0

The answer is D because CH4+02>2c02+3H20 is a chemical reaction

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My name is Ann [436]

Answer:

Relation between initial speed of bullet and height h is given as

$v = \frac{m + M}{m}\sqrt{2gh}$

Explanation:

As we know that system of block and bullet swings up to height h after collision

So we have

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so we have

$v_1 = \sqrt{2gh}$

so speed of the block + bullet just after the impact is given by above equation

Now we also know that there is no force on the system of bullet + block in the direction of motion

So we can use momentum conservation

$mv = (m + M)v_1$

now we have

$v = \frac{m + M}{m}\sqrt{2gh}$

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2 years ago

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andreyandreev [35.5K]

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vlada-n [284]

Answer:

inches and feet (or even centameters)

Explanation:

these are all common units used to measure height

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That is false for that.

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