Chemistry High School

I NEED HELP PLS PLS PLS

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Answer 1

pyrite because it doesn’t sink it floats

Related Questions

What do acids do in solution?

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B
The answer should be B.....

connect them, dont guess please + 23 points

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Answer:

Astronaut- highly trained individual for space travel

Payload Specialist- partnering scientist, journalist, or political guest.

Space Sickness- nausea, vomiting, and upset stomach.

Muscle Atrophy- the result of microgravity.

Johnson Space Center- training facility for U.S. astronauts.

help :) plz :) ........

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Answer:

D. 4:3

Explanation:

The mole ratio is simply the coefficients in a balanced chemical reaction and their relation to each other. For example, the mole ratio between Al and [tex]Al_{2}O_{3}[/tex] is 2:1, and the ratio between [tex]O_{2}[/tex] and [tex]Al_{2}O_{3}[/tex] is 3:2.

PLEASE HELP!!!!!!!! I DO NOT UNDERSTAND

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Answer:

A, B, C

Explanation:

Answer:A, b, c

Explanation

HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP

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Answer:

finally found

31th July 2000

describe un modelo matemático para representar lo que sucede en cada una de las reacciones químicas (incluye toda la simbología que puedas) y clasifícalas según consideres de acuerdo con lo abordado en el tema.
1. El hidrógeno molecular reacciona con el oxígeno molecular y produce agua

2. El Óxido de calcio reacciona con el agua y produce hidróxido de calcio

3. El sulfuro de hierro (II) se produce cuando reacciona el azufre y el hierro en su forma atómica

4. El ácido sulfuroso se descompone por la acción de calor en dióxido de azufre gaseoso y agua

5. El carbonato de calcio se descompone por la acción de calor en oxido de calcio y dióxido de carbono gaseoso.

6. El magnesio reacciona con el ácido clorhídrico y produce dióxido de magnesio e hidrógeno gaseoso.
AYUDAAAAA

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Responder:

2H2 + O2 → 2H2O

CaO + H2O → Ca (OH) 2

Fe + S → FeS

H2SO3 → SO2 + H2O

CaCO3 → CaO + CO2

Explicación:

2H2 + O2 → 2H2O

2 moléculas de hidrógeno gaseoso reaccionan con oxigente para producir 2 moléculas de agua

CaO + H2O → Ca (OH) 2

El óxido de calcio reacciona con el agua para producir hidróxido de calcio.

Fe + S → FeS

El hierro reacciona con el azufre para producir sulfuro de hierro.

H2SO3 → SO2 + H2O

Por descomposición, el ácido sulfuroso se descompone para producir dióxido de azufre y agua.

CaCO3 → CaO + CO2

El carbonato de calcio se descompone para producir óxido de calcio y dióxido de carbono.

Characteristics of a substance that describe its' ability to change into a different substance are called?

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A characteristic of a pure substance that describes its ability to change into different substances. chemical change. A change that occurs when one or more substances change into entirely new substances with different properties. physical property.

Question number 12 I need help

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Answer: Its B.

Explanation:

i cant quite explain

which process helps guarantee that a species continues to involve over hundreds of years?

A. growth

B. nutrition

C. reproduction

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Answer:

C. reproduction

Explanation:

WDYT a mixture is? Please help

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Answer:

A mixture is when two substances are physically combined and can be taken apart.

Explanation:

my words

What is an important effect of gravity?

Answers

Answer:

pulling objects with mass closer to each other

Explanation:

that is the only role of gravity

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