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3 years ago

What is a combustion reaction?

Chemistry

2 answers:

tigry1 [53]3 years ago

8 0

Answer:

In a combustion reaction, a substance reacts with oxygen from the air. Combustion reactions happen at high temperatures, and transfer energy to the surroundings as light and heat. ... Since methane is made up of atoms of carbon and hydrogen, the products of its combustion reaction are oxides of carbon and hydrogen.

Explanation:

PIT_PIT [208]3 years ago

4 0

In a combustion reaction, a substance reacts with oxygen from the air. Combustion reactions happen at high temperatures, and transfer energy to the surroundings as light and heat.

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Scientists' belief that an atom is a solid sphere, is good enough to explain; PLZ I HAVE LESS TIME!!!!

Natasha2012 [34]

Answer:

Its quite vague, instead you could say an atom is the smallest building block which further consists of subatomic particles like protons, neutrons and electrons :)

Hope thi helps :) and I'd appreciate if you'd mark brainliest because ive been stuck on the same rank for quite a long time :(

7 0

3 years ago

Fe2O3+2Al=Al2O3+2Fe

True [87]

We determine the limiting reactant by using the moles present in the equation and the actual moles.
According to equation, ratio of Fe₂O₃ : Al = 1 : 2
Actual moles of Fe₂O₃ = 187.3 / (56 x 2 + 16 x 3)
= 1.17
Actual moles of Al = 94.51 / 27
= 3.5
Fe₂O₃ is limiting. Fe₂O₃ required:
(moles Al)/2 = 3.5/2 = 1.75
Moles to be added = 1.75 - 1.17
= 0.58
Mass to be added = moles x Mr
= 0.58 x (56 x 2 + 16 x 3)
= 92.8 grams

6 0

3 years ago

Read 2 more answers

1 How many moles of solute are in:

Sonbull [250]

Moles of solute for both a and b are the same = 1 mol

<h3>Further explanation</h3>

Given

a 500 cm³ of solution, of concentration 2 mol/dm³

b 2 litres of solution, of concentration 0.5 mol/dm³

Required

moles of solute

Solution

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution

Can be formulated :

$\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}$

V = 500 cm³ = 0.5 L

M = 2 mol/L

n=moles = M x V

n = 2 mol/L x 0.5 L

n = 1 mol

V = 2 L

M = 0.5 mol/L

n=moles = M x V

n = 0.5 mol/L x 2 L

n = 1 mol

5 0

3 years ago

If an element has 12 protons, 13 neutrons, and 15 electrons, what is its mass?

-BARSIC- [3]

Answer:

Explanation:

mass number = protons + neutrons

= 13 + 12 = 25

7 0

3 years ago

Other questions:

vlabodo [156]

Answer:

The functional group present in Cinnamon are : Aromatic , alkene , aldehyde

The functional group present in Almonds : Aromatic , aldehyde

The functional group present in DHA : Ketone , alcohol

Explanation:

<u>Almond :</u>

Chemical formula : $C_{7}H_{6}O$

It contain : A benzene ring (Aromatic) , a -CHO group (aldehyde)

<u>Cinnamon Sticks</u> :

Chemical Formula : $C_{9}H_{8}O$

It contain : A benzene ring (Aromatic) ,an alkene group (C=C) , a -CHO group (aldehyde)

Chemical Formula : $C_{3}H_{6}O_{3}$

It contain : Alcohol group (-OH) , ketone group (C=O)

8 0

3 years ago