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3 years ago

1

Chemistry

1 answer:

Inessa [10]3 years ago

5 0

Answer:

methane + oxygen → carbon dioxide + water

Explanation:

methane + oxygen → carbon dioxide + water

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There is a balloon filled with 1 liter of methane, CH4 gas at STP and a balloon filled with one liter of hydrogen gas, H2 at STP

ankoles [38]

Answer:

Explanation:

I would say H2 cause CH4 have less hydrogen gas .

6 0

3 years ago

How many grams of Li are there in 1.39 moles of Li?

Ulleksa [173]

Answer:

6.941 grams

Explanation:

The molecular formula for Lithium is Li. The Si base unit for amount of substance is mole. 1 mole is equal to 1 moles Lithium, or 6.941 grams

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3 years ago

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Which particle has the least mass?(1) alpha (3) neutron (2) beta particle (4) proton

ivann1987 [24]

Alpha particle has a mass of 4 (Two protons and two neutrons)
Neutron has a mass of 1
Beta particle has a mass of about 0 (Electron)
Proton has a mass of 1
So the answer is (2) Beta particle

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3 years ago

Balance the following chemical equation: __N2H4+ __O2 = __NO2 + __H2O

Deffense [45]

The answer for the following question is mentioned below.

$N_{2}H_{4}$ +3 $O_{2}$ →2 $NO_{2}$ +2 $H_{2} O$

the equation is balanced.

Explanation:

The steps required to balance a chemical equation is:

Firstly,write the formula of the compound/substance.

Secondly,count the number of atoms in each element on each side of the equation

Thirdly,Adjust the co-efficient.Balance the atoms or the ions present in the greatest number.

You may do this by finding the lowest common multiple of two.

Continue systematically to balance the atoms or ions on the rest of the side (i.e.)on the other side.

Lastly,check the number of atoms each elements is same on both the sides

From the equation:

Before balancing the equation:

$N_{2} H_{4}$ + $O_{2}$ → $NO_{2}$ + $H_{2} O$

After balancing the equation:

$N_{2}H_{4}$ +3 $O_{2}$ →2 $NO_{2}$ +2 $H_{2} O$

Therefore the given equation is balanced.

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3 years ago

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True or False: The only planet that has gravity is the Earth.

taurus [48]

Answer:

False.

Explanation:

all planets have gravity because if they didnt, the gasses and whatever makes up the planet wouldnt be pulled down to the core of the planet, and it would just be floating around in space.

6 0

3 years ago