4 years ago

SOME ONE HELP ME ON THIS WEBSITE

Chemistry

1 answer:

Sergio039 [100]4 years ago

4 0

Every cell has a nucleus unless it is RNA which is involved with DNA movement

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A lab analysis of 0.502 g of Scandium (Sc) reaction with Oxygen (O2) from Air resulted

VARVARA [1.3K]

The empirical formula of the metal oxide would be $Sc_2O_3$

<h3>What is empirical formula?</h3>

Mass of scandium = 0.502g

Mass of scandium + oxygen = 0.768g

Mass of oxygen = 0.768 - 0.502 = 0.266g

Mole of scandium = 0.502/44.95 = 0.011

Mole of oxygen = 0.266/16 = 0.017

Divide by the lowest:

Scandium = 0.011/0.011 = 1

Oxygen = 0.017.0.011 = 1.5

Thus, the empirical formula of the compound would be $ScO_1.5$ or $Sc_2O_3$

More on empirical formula can be found here:brainly.com/question/14044066

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3 years ago

Red blood cells are formed in the bone marrow of the _______

Lostsunrise [7]

Red blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow called hemocytoblasts give rise to all of the formed elements in blood. If a hemocytoblast commits to becoming a cell called a proerythroblast, it will develop into a new red blood cell.

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Earthquakes are vibrations of Earth's crust. Which of the following is used to

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A barometer is the answer

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3 years ago

How would sand get packed down in nature explain

Ostrovityanka [42]

Answer: Being trampled by the animals of nature

Explanation:

The animals walk over the sand and it is compacted more and more

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