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2 years ago

The function of the cell wall is to

Chemistry

2 answers:

k0ka [10]2 years ago

6 0

Answer:

D.make a plant cell rigid

Explanation:

Cell wall is present only in a plant cell. Option A, B & C are functions of the cell membrane not the cell wall.

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vodka [1.7K]2 years ago

4 0

$\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}$

D.make a plant cell rigid

thanks
hope it helps.

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What type of heat transfer occurs when you touch a metal

Galina-37 [17]

Answer:

heat conduction

Explanation:

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2 years ago

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If you added 15,000 calories to 2.0 L of water that was at 25.0 degrees C, what temperature would it be at when you finished?

rewona [7]

Answer:

When we finish, the temperature would be 32.5℃

Explanation:

Density of water = mass/volume

So,

Mass of water = Density × Volume

$\\\\$=1.0 \times 2.0 L$\\\\$=1.0 \frac{g}{m L} \times 2000 m L$\\\\$\quad=2000 g$$

$Q=m \times c \times \Delta T$

where

$\Delta T$ = Final T - Initial T

Q is the heat energy in calories

c is the specific heat capacity (for water 1.0 cal/(g℃))

m is the mass of water

plugging in the values

$15000 \mathrm{Cal}=2000 \mathrm{g} \times 1.0 \frac{\mathrm{cal}}{\mathrm{g}^{\circ} \mathrm{C}} \times \Delta T$

$\\$\Delta T=\frac{15000 \mathrm{cal}}{2000 \mathrm{g} \times \frac{1.0 \mathrm{cal}}{g^{\circ} \mathrm{C}}}$\\\\$\Delta T=7.5^{\circ} \mathrm{C}$$

Final T = ∆T + Initial T

= 7.5℃ + 25℃ = 32.5℃ (Answer).

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2 years ago

Covalent bonds take place between..

umka2103 [35]

Answer:

Covalent Bonds are formed when two non-metals share electrons

Hope this helps

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3 years ago

3. HNO3 + NaHCO3 → NaNO3 + H2O + CO2

Bond [772]

Answer:

hydrogen nitrate + sodium hydrochlorate- sodium nitrate+ water + co2 (acid base reaction)

silver nitrate + calcium chloride - silver chloride+ calcium nitrate ( double displacement reaction)

hydrogen + nitrogen - ammonia gas ( simple contact reaction)

hydrogen peroxide - water + oxygen ( single displacement reaction)

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2 years ago

The heat of fusion for water is 80. cal/g. how many calories of heat are released

Ray Of Light [21]

800 calories are released

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2 years ago