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3 years ago

PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....BUT U MUST TYPE EVERYTHING needed ASAP

Chemistry

2 answers:

lina2011 [118]3 years ago

7 0

Answer: B

Explanation:

aleksandrvk [35]3 years ago

5 0

Plastic is a big problem in the ocean. Every year, humans produce over 300 million tons of plastic. A lot of that plastic ends up in the ocean.

Some plastic gets washed into rivers or streams.
Some plastic is blown into the ocean from land.
Some plastic is even thrown into the ocean on purpose.

I really hope this helps!

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Calculate the density of a solid in g/cm3 if it weighs 38.3 kg and has a volume of 0.00463 m3.

RideAnS [48]

Answer: D=8.27 g/cm³

Explanation:

Density is mass/volume. Mass is in grams and volume is in liters. In this case, the problem wants our volume to be in cm³. All we need to do is to make some conversions to convert kg/m³ to g/cm³.

$D=\frac{38.3kg}{0.00463m^3} *\frac{(1m)^3}{(100cm)^3} *\frac{1000g}{1kg}$

With this equation, the m³ and kg cancel out, and we are left with g/cm³.

D=8.27 g/cm³

3 0

3 years ago

Nguyên tử nguyên tố sắt có 26e<br> a. Viết cấu hình e của sắt<br> b. Sắt thuộc nguyên tố s,p,d,f

vichka [17]

Answer:

1s2 2s2 2p6 3s2 3p6 3d6 4s2

Explanation:

3 0

3 years ago

electric current is passed through water, it decomposes inti hydrogen and oxygen. write full balanced chemical equation for the

Tems11 [23]

Answer:

2H2O ------------------] 2H2 + O2

6 0

3 years ago

Crude oil may contain hundreds of different types of hydrocarbons. Some examples include: Butane (C₄H₁₀)

miv72 [106K]

Answer:

The answer to your question is:

Explanation:

Butane (C₄H₁₀) Compound It's composed by C and H

Dodecane (C₁₂H₂₆) Compond It's composed by C and H

Octane (C₈H₁₈) Compound It's composed by C and H

Benzene (C₆H₆) Compound It's composed by C and H

Oxygen (O₂) Element It's only oxygen

Carbon dioxide (CO₂) Compound It's composed by C and O

Water (H₂O) Compound It's composed by H and O

Gasoline Mixture It's composed by many hydrocarbons

Kerosene Mixture It's a mixture of hydrocarbons

4 0

3 years ago

Read 2 more answers

What is Ph of bases

lbvjy [14]

Answer:

An acid increases the hydrogen ion concentration in a solution, while a base decreases the hydrogen ion concentration. Solutions with a pH of less than seven are acidic, while those with a pH greater than seven are basic (alkaline).

Explanation:

5 0

4 years ago