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zhenek [66]
3 years ago
9

One difference between plant and animal cells is that animal cells do not have

Chemistry
2 answers:
aev [14]3 years ago
5 0
Plant cells have cell walls and a bigger vacuole than animal cells
rewona [7]3 years ago
3 0

Chloroplasts.

Plants use chloroplasts to create their own energy by using sunlight.

You might be interested in
How do test with crash dummies, seat belts, and air bags illustrate newton's first law of motion??
Liono4ka [1.6K]

Answer:

Newton’s law of inertia is illustrated in tests with crash dummies, seat belts, and airbags, wherein the object stays in motion unless there is an unbalanced force applied to it.

Inertia is the main reason why there are seatbelts and airbags in the car. In this case, when the seatbelt is trapped to the passenger, the passenger experiences the same state of motion as the car. If the car accelerates/decelerates, the passenger experiences it too. When the car experiences collision, an unbalance force is acted upon it. This causes the car to stop abruptly, and the passenger shares the same state of motion because of the seatbelt and the airbags that apply the unbalanced force to stop the passenger to go forward.

8 0
2 years ago
In the reaction 2CO (g) + O2 (g) 2CO2 (g), how many moles of oxygen gas are needed to react with 24 moles of carbon monoxide
Anuta_ua [19.1K]

12 moles of oxygen gas are needed to react with 24 moles of carbon monoxide.

<u>Explanation:</u>

The molar ratio of carbon monoxide to oxygen 2:1

Which means 2 moles of carbon monoxide is reacting with 1 mole of oxygen.

to produce 2 moles of carbon dioxide.

Therefore, from the molar ratio, we get that 12 moles of oxygen are required to react with 24 moles 0f carbon monoxide.

Molar ratio:

The molar ratio gives the moles of product that are formed from a certain amount of reactant, and also the number of moles of a reactant needed to react with another reactant.

4 0
3 years ago
You burn a 3.4 g cube of tofu to warm 12 g of water, which increases the temperature of the water 7 °C. How many calories of hea
Murrr4er [49]

Answer:

Water absorbs 84cal.

Explanation:

The given information about water is:

- mass of water (m): 12g

- change in temperature (ΔT): 7°C

With the given information, and the specific heat of water (c=1cal/g.°C), we can calculate the aeat that water absorbs, using the heat formula:

\begin{gathered} Q=m*c*\Delta T \\ Q=12g*1\frac{cal}{g*\degree C}*7\degree C \\ Q=84cal \end{gathered}

So, water absorbs 84cal.

4 0
1 year ago
Which of the following shows a valid combustion reaction?
Strike441 [17]

Answer:

May be third one because of the formation of H2(hydrogen)on the product side.

8 0
3 years ago
The value of ka for benzoic acid is 6.30×10-5. what is the value of kb, for its conjugate base, c6h5coo-?
Serggg [28]
Benzoic acid release protons in water:
C₆H₅COOH(aq) ⇄ C₆H₅COO⁻(aq) + H⁺(aq).
Benzoic acid conjugate base gain protons in water:
C₆H₅COO⁻(aq) + H⁺(aq) ⇄ C₆H₅COOH(aq).
Ka(C₆H₅COOH) = 6.3·10⁻⁵.
Ka · Kb = 1·10⁻¹⁴.
Kb(C₆H₅COO⁻) = 1·10⁻¹⁴ ÷ 6.3·10⁻⁵.
Kb(C₆H₅COO⁻) = 1.587·10⁻¹⁰.
4 0
3 years ago
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