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Alla [95]
2 years ago
11

Quiz due soon need help ASAP

Chemistry
1 answer:
Rom4ik [11]2 years ago
8 0

Answer:

3

Explanation:

Because in product 3CuSO4 is present it means 3 SO4 sulphate ions are present

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Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of water would be produced by this reac
yanalaym [24]

volume of H₂O = 7.2 L

Explanation:

The combustion reaction of methane (CH₄):

CH₄ + 2 O₂ → CO₂ + 2 H₂O

Now we calculate the number of moles of methane using the following formula:

number of moles = volume / 22.4 (L/mole)

number of moles of CH₄ = 3.6 / 22.4

number of moles of CH₄ = 0.16 moles

Taking in account the chemical reaction, we devise the following reasoning:

if             1 mole of CH₄ produce 2 moles of H₂O

then  0.16 moles of CH₄ produce X moles of H₂O

X = (0.16 × 2) / 1 = 0.32 moles of H₂O

And now we can calculate the volume of water (H₂O) produced by the reaction:

number of moles = volume / 22.4 (L/mole)

volume = number of moles × 22.4 (L/mole)

volume of H₂O = 0.32 × 22.4

volume of H₂O = 7.2 L

Learn more about:

combustion reaction

brainly.com/question/14122510

#learnwithBrainly

8 0
3 years ago
Why does changing the volume of a container change the pressure of the gas in it?
ollegr [7]

Answer:

Changing the volume increases the area that the molecules collide with so the force is spread over a larger area.

Explanation:

The volume of a container is the space within the container. This is the amount of void the gas can occupy.

When the volume of a container is changed, the space either increases or decreases.

  • An increase in volume creates more space within the container.
  • This spreads out the force over a larger area.

When the volume of the container is reduced,

  • the force is confined to much smaller space.

The frequency of collision is higher for tiny spaces.

But lower for a large volume.

8 0
3 years ago
Read 2 more answers
Can you guys help me on my science homework??​
natulia [17]

Answer:

1. B 2. D 3. Jon could test which animals like certain foods.

3 0
3 years ago
Please help thank you! And how many significant figures does it have?
zheka24 [161]

Answer:

0.779 cube centimetres

Explanation:

density = mass divided by volume

d=\frac{m}{v} rearrange the equation to solve for volume: v=\frac{m}{d}

plug in the corresponding values:

volume = 6.130 g / 7.87 (gcm^3)

the gs cancel, the answer will be 0.7789

we will round to three sig figs, since that's the lowest amount of figures in the given values: ~0.779 cm^3

6 0
3 years ago
Which are always the first waves of an earthquake to be detected?
frez [133]

Answer:

The first kind of body wave is the P wave or primary wave.

Explanation:

This is the fastest kind of seismic wave, and, consequently, the first to 'arrive' at a seismic station.

6 0
3 years ago
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