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3 years ago

Balance following equation H2 + _02 → _H20

Chemistry

1 answer:

Nutka1998 [239]3 years ago

4 0

Answer:

2H2+O2=2H20

Explanation: Since there are 2 Oxygen in the reactants then there must be 2 Oxygen in the products, meaning there is a coefficient of 2 in front of H20 and that makes there be 4 Hydrogen, so adjust the reactants (2 H2)

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1. Which of the following statements about separation techniques is correct?

vagabundo [1.1K]

Answer: A

Explanation:

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4 years ago

(a) Red light has a wavelength of roughly 700 nm. What is the wavelength in m? ball park 10.10' (b) What is the wavelength of re

joja [24]

Explanation:

a) Wavelength of red light = 700 nm

1 nanometer = $10^{-9} meter$

Wavelength of red light in meter will be:

$=700 nm=700\times 10^{-9} m=7.00\times 10^{-7} m$

b) Wavelength of red light = $7.00\times 10^{-7} m$

1 meter = 39.3701 inches

Wavelength of red light in inches will be:

$7.00\times 10^{-7} m=7.00\times 10^{-7}\times 39.3701 inches$

$=2.7559\times 10^{-5} inches$

Value of distance given = 90.123 km

1 km = 3280.84 feet

$90.123 km=90.123 \times 3280.84 feet=295,679.1433 feet$

1 foot = 0.1515152 chain

$295,679.1433 feet=295,679.1433\times 0.1515152 chain$

$=44,799.88453 feet\approx 4.48\times 10^4 chains$

Value of distance in chains:

$90.123 km=4.48\times 10^4 chains$

3 0

3 years ago

Which phrase best describes an individual organ?

HACTEHA [7]

Answer:

made of different kinds of tissues

Explanation:

cause that's the only one that makes sense because it goes: cell, tissues,organ,organ system , organism

1. the simplest unit of life - cell

2. a individual organ - would be made of different kinds of tissues

3. tissues - would be made of one kind of cell

4- an organ system - meets all the needs of a organism

also it wouldn't make sense for a individual organ to be made of only one kind of cell so yeah

good luck :) I hope this was right

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3 years ago

2) John cut a pineapple into 9-millimeter-wide cubes. How many

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Answer:

I think the answer is 729 cubic millimeters.

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4 years ago

Read 2 more answers

Are natural gas, oil and coal are all considered to be fossil fuels?

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3 years ago