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2 years ago

The outer planets—Jupiter, Saturn, Uranus, and Neptune—are made up of which gases?

2 answers:

5 0

<span>The outer planets—Jupiter, Saturn, Uranus, and Neptune—are made up of mainly </span>hydrogen, helium and nitrogen.

Jupiter and Saturn are primarily made up of hydrogen and helium. However, while Uranus and Neptune are primarily composed of hydrogen and helium also, they consist of more ices and methane than Jupiter and Saturn.

tresset_1 [31]2 years ago

3 0

Hydrogen<span> and </span><span>helium is your answer hope it helps:)</span>

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Which of these conjugate acid-base pairs will not function as a buffer?A) HNO3 and NO3^-B) HCO3^- and CO3^2-C) C2H5COOH and C2H5

marin [14]

<h3><u>Answer;</u></h3>

A) HNO3 and NO3^-

<h3><u>Explanation;</u></h3>

<em><u>HNO3 is a strong acid and NO3 is its conjugate base, meaning it will not have any tendency to withdraw H+ from solution.</u></em>
Buffers are often prepared by mixing a weak acid or base with a salt of that weak acid or base.
The buffers resist changes in pH since they contain acids to neutralize OH- and a base to neutralize H+. Acid and base can not consume each other in neutralization reaction.

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3 years ago

A or B or C or D, fassst plzzz

olga nikolaevna [1]

Answer:

a.option is the correct answer

4 0

2 years ago

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A student uses a dye to change the colour of his tee-shirt. he fills a metal bucket with water. When the bucket is heated, what

Tanya [424]

Answer:

The particles begin to vibrate faster and more.

Explanation:

Adding heat to matter increases the energy, thus creating more movement. Eventually, the bucket will melt, turning to a liquid. While it is a sold, it still has particle movement, just not enough to break volume or shape.

8 0

2 years ago

which factor is most responsible for the fact that water is a liquid rather than a gas at room temperature

frosja888 [35]

The answer is Hydrogyn bonding. It keeps the water molocules bonded together and in a liquid state, without it it'd be in a gashious state.

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2 years ago

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Problem 4

Hunter-Best [27]

<h3>Answer:</h3>

1.93 g

<h3>Explanation:</h3>

<u>We are given;</u>

The chemical equation;

2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(l) ΔH = -3120 kJ

We are required to calculate the mass of ethane that would produce 100 kJ of heat.

From the equation given;

2 moles of ethane burns to produce 3120 Kilo joules of heat

Therefore;

Number of moles that will produce 100 kJ will be;

= (2 × 100 kJ) ÷ 3120 kJ)

= 0.0641 moles

But, molar mass of ethane is 30.07 g/mol

Therefore;

Mass of ethane = 0.0641 moles × 30.07 g/mol

= 1.927 g

= 1.93 g

Thus, the mass of ethane that would produce 100 kJ of heat is 1.93 g

3 0

3 years ago