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3 years ago

8

Fill in the blanks. The celestial bodies in space move about in predictable paths called

2 answers:

ella [17]3 years ago

7 0

Answer:

Magnetic fields, revolve, asteroids

butalik [34]3 years ago

5 0

The celestial bodies in space move about in predictable paths called ORBITS. As a result, a planet is able to REVOLVE around the Sun. Other objects in the solar system, also orbit the Sun. These objects include ASTEROIDS and comets.

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The stem of a plant is made of several types of tissue that work together.

jeka94

Answer is tissue - :)

3 0

3 years ago

One mole of nitrous acid (HNO2) contains 1.00 gram of hydrogen (H), 14.0 grams of nitrogen (N), and 32.0 grams of oxygen (O). Wh

Zigmanuir [339]

Mass % of nitrogen = mass of nitrogen*100 / total mass

= 14*100 / (1+ 14 + 32)

= 14*100 / 47
= 29.7 %

8 0

3 years ago

How many molecules of Oxygen are consumed if 24 molecules of Carbon Dioxide are produced?

Nat2105 [25]

Answer:

Explanation:

C + O2 → CO2

Mole of C = 24 g/(12 g/mole)

Mole of C = 2 mole

Mole of molecular O2 = 74 g/(32 g/mole)

Mole of molecular O2 = 2.3125 mole

Since mole of C < mole of O2, then C being the limiting reagent.

From the reaction, it shows that mole ratio between C and O2 = 1 : 1.

So, 2 moles of C will stoichiometrically react with 2 moles of O2 to generate 2 moles of CO2.

Avogadro's law states that :"equal volumes of all gases, at the same temperature and pressure, have the same number of molecules i.e. 6.02 x 10^23 molecules/mole.

Therefore, 2 moles of CO2 contain 2 moles x 6.02 x 10^23 molecules/mole = 1.204 x 10^24 molecules of CO2 is formed.

6 0

3 years ago

What is the volume of 1g of ice in cm3?

Amanda [17]

Answer:

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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Explanation:

3 0

3 years ago

In one sample of a compound of copper and oxygen, 3.12g of the compound contains 2.50g of copper and the remainder is oxygen. Ca

blsea [12.9K]

Answer:

% composition O = 19.9%

% composition Cu = 80.1%

Explanation:

Given data:

Total mass of compound = 3.12 g

Mass of copper = 2.50 g

Mass of oxygen = 3.12 - 2.50 = 0.62 g

% composition = ?

Solution:

Formula:

<em>% composition = ( mass of element/ total mass)×100</em>

% composition Cu = (2.50 g / 3.12 g)×100

% composition Cu = 0.80 ×100

% composition Cu = 80.1%

For oxygen:

<em>% composition = ( mass of element/ total mass)×100</em>

% composition O = (0.62 g / 3.12 g)×100

% composition O = 0.199 ×100

% composition O = 19.9%

5 0

3 years ago