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3 years ago

5

PLEASE HELP YOU GUYS THIS IS MISSING IF YOU HELP ME WITH THIS YOU WILL GET AT LEAAST 20 POINTS RANDOM ANSWERS = REMOVED. THANK Y

OU THIS IS A LAB THATS MISSING<3

2 answers:

nataly862011 [7]3 years ago

4 0

Just say you don’t have any of the materials

nika2105 [10]3 years ago

4 0

Girl idek i just need to answer someone’s q for i can get mine asked

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Approximately how many mineral species have scientists identified?

nekit [7.7K]

I think it’s 5000 because it says that their is over 4,124 valid species of minerals.

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3 years ago

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A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe

zubka84 [21]

Answer:

The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

Explanation:

There will be a transfer of thermal energy (heat) from the hot metal plate to the surrounding air. This transfer of energy equates to a transfer of kinetic energy in the molecules. As the plate loses heat, the molecules in the plate will lose kinetic energy and slow down. As the surrounding air gains heat, the molecules will gain kinetic energy and speed up.

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2 years ago

3. What is the mass of 5 moles of Hydrogen sulfate?I

solong [7]

Answer:

490

98 for 1 mole, Hence for 5 moles 5 X 98 =490.

Explanation:

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3 years ago

Explain 3 sources of carbon dioxide production and explain how the production of CO2 can lead to global warming.

prisoha [69]

Answer:

Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.

Explanation:

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2 years ago

13. Would you expect oxygen to form a cation or anion? How many electrons would it gain or lose? Why?

netineya [11]

Answer: C)Anion, it would gain 2 electrons to satisfy the octet rule.

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

The electrons are filled according to Afbau's rule in order of increasing energies and thus the electronic configuration of oxygen with 8 electrons is

$O:8:1s^22s^22p^4$

The cation is formed by loss of electrons and anions are formed by gain of electrons.

In order to complete its octet and get stable, it gains 2 electrons and thus would form an anion.

$O^{2-}:10:1s^22s^22p^6$

7 0

3 years ago