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3 years ago

Please help - will award brainliest! Which type of reaction does this diagram represent?

Chemistry

2 answers:

Brilliant_brown [7]3 years ago

6 0

The correct answer would be B nuclear fission because an atom is splitting into two large fragments of comparable mass

soldier1979 [14.2K]3 years ago

5 0

Explanation:

A reaction in which a large atomic nuclei splits into two small nuclei along with release of energy is known as a nuclear fission reaction.

For example, $^{235}_{92}U + ^{1}_{0}n \rightarrow ^{92}Kr + ^{141}Ba + 3^{1}_{0}n$

On the other hand a nuclear reaction in which two small nuclei combine together to result in the formation of a large nuclei is known as a nuclear fusion reaction.

Thus, we can conclude that the given diagram represents a nuclear fission reaction.

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2C2H2 + 5O2 → 4CO2 + 2 H2O How many grams of CO2 are required to react with exactly 3.00 mol of O2? 106 g 132 g 165 g 76.8 g

cricket20 [7]

Hey there!:

Given the reaction:

2 C2H2 + 5 O2 → 4 CO2 + 2 H2O

5 moles O2 ------------- 4 moles CO2

3.00 moles O2 ---------- ( moles of CO2 ?? )

moles of CO2 = 3.00 * 4 / 5

moles of CO2 = 12 / 5

moles of CO2 = 2.4 moles

So, molar mass CO2 = 44.01 g/mol

Therefore:

1 mole CO2 -------------- 44.01 g

2.4 moles CO2 ---------- ( mass of CO2 )

mass of CO2 = 2.4 * 44.01 / 1

mass of CO2 = 106 g

Answer A

Hope that helps!

8 0

3 years ago

If an atom has three shell and number of valence electrons are two. Is this element metal

cluponka [151]

Answer:

Metal

Element: Calcium

Valency: 2

Explanation:

To find the element, let's use the periodic table. (Look below)

We already went past 3 shells, just need the 2 electrons after it.

Just skip to the 4th row and count 2 to the right

We end up at Calcium.

Calcium is a metal and we're also on the alkaline earth metals column.

Calcium will need to lose 2 electrons to reach stability, so the valency is 2.

3 0

2 years ago

What is the percent nitrogen in NaNO3?<br> 56.47%<br> 27.04%<br> 16.48%<br> 14.01%

hichkok12 [17]

I think it’s :answer choice c

3 0

1 year ago

WILL GIVE BRAINLIEST ANSWER

OleMash [197]

The correct Answer based on my calculations is C

7 0

2 years ago

Read 2 more answers

Some friends are trying to make wine in their basement. They've added yeast to a sweet grape juice mixture and have allowed the

Mekhanik [1.2K]

Answer:

The yeast respired aerobically

Explanation:

The expectation here was that the yeast was going to put the sugar in the grape juice through fermentation, which is an anaerobic process that results in alcohol as one of the products. However since no alcohol was found in this particular example, it is fair to assume that maybe there was oxygen in teh muxture and therefore the yeast respired aerobically, producing water and carbon dioxide as products.

8 0

2 years ago