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3 years ago

Why does land heat up more faster than water?

2 answers:

5 0

if you go to a desert and your in the middle of nowhere you get thirsty and have no water and need to find water to drink so the sun is the reason it heats faster than water in the desert

zhannawk [14.2K]3 years ago

3 0

Answer:

Water has a higher heat capacity than land.

Explanation:

You know how long it takes for water to start boiling? That is because of waters strong thermal resistance! Water can hold its temperature very well, this is why the ocean only goes up a couple of degrees every year, even with rising temperatures. Water has to reach the temperature of 212 degrees in order to boil. On the other hand, land does not have a very high heat capacity. This is why land heats up faster than water.

I hope this helped! ~ Anna

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Given one mole of each substance, which of the following will produce the FEWEST particles in aqueous solution? 1. sodium nitrat

svlad2 [7]

Answer: The substance that produces fewest particles is $CH_2Cl_2$

Explanation:

Ionization reaction is defined as the reaction in which an ionic compound dissociates into its ions when dissolved in aqueous solution.

Covalent compounds do not dissociate into ions when dissolved in aqueous solution.

For the given options:

Option 1: Sodium nitrate

The chemical formula of sodium nitrate is $NaNO_3$

The ionization reaction for the given compound follows:

$NaNO_3(aq.)\rightarrow Na^+(aq.)+NO_3^-(aq.)$

This produces in total of 2 ions.

Option 2: $CH_2Cl_2$

The given compound is a covalent compound and do not dissociate into its ions. It remains as such as a single unit.

Option 3: $K_2SO_4$

The chemical name for the given compound is potassium sulfate.

The ionization reaction for the given compound follows:

$K_2SO_4(aq.)\rightarrow 2K^+(aq.)+SO_4^{2-}(aq.)$

This produces in total of 3 ions.

Option 4: Sodium phosphate

The chemical formula of sodium phosphate is $Na_3PO_4$

The ionization reaction for the given compound follows:

$Na_3PO_4(aq.)\rightarrow 3Na^+(aq.)+PO_4^{3-}(aq.)$

This produces in total of 4 ions.

Hence, the substance that produces fewest particles is $CH_2Cl_2$

3 0

3 years ago

How should you handle Mercury thermometers

tresset_1 [31]

Not at all they’re poisonous

8 0

3 years ago

Read 2 more answers

How many neutrons are in the element phosphorus?

Art [367]

Finding neutrons = Mass number - proton number.
For finding neutrons for phosphorus = 31-15
=16.

7 0

3 years ago

Calcium cyanamide, CaCN2, reacts with water to form calcium carbonate and ammonia. CaCN2(s)+3H2O(l)→CaCO3(s)+2NH3(g). How many g

Norma-Jean [14]

298 g of calcium carbonate CaCO₃

Explanation:

We have the following chemical reaction:

CaCN₂ (s) + 3 H₂O (l) → CaCO₃ (s)+ 2 NH₃ (g)

number of moles = mass / molar weight

number of moles of H₂O = 161 / 18 = 8.94 moles

Knowing the chemical reaction we devise the following reasoning:

if 3 moles of H₂O produces 1 mole of CaCO₃

then 8.94 moles of H₂O produces X moles of CaCO₃

X = (8.94 × 1) / 3 = 2.98 moles of CaCO₃

mass = number of moles × molar weight

mass of CaCO₃ = 2.98 × 100 = 298 g

Learn more about:

number of moles

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7 0

3 years ago

10 m3 of carbon dioxide is originally at a temperature of 50 °C and pressure of 10 kPa. Determine the new density and volume of

Dimas [21]

Answer : The new density and new volume of carbon dioxide gas is 0.2281 g/L and $7.2m^3$ respectively.

Explanation :

First we have to calculate the new or final volume of carbon dioxide gas.

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 10 kPa

$P_2$ = final pressure of gas = 15 kPa

$V_1$ = initial volume of gas = $10m^3$

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $50^oC=273+50=323K$

$T_2$ = final temperature of gas = $75^oC=273+75=348K$

Now put all the given values in the above equation, we get:

$\frac{10kPa\times 10m^3}{323K}=\frac{15kPa\times V_2}{348K}$

$V_2=7.2m^3$

The new volume of carbon dioxide gas is $7.2m^3$

Now we have to calculate the new density of carbon dioxide gas.

$PV=nRT\\\\PV=\frac{m}{M}RT\\\\P=\frac{m}{V}\frac{RT}{M}\\\\P=\rho \frac{RT}{M}\\\\\rho=\frac{PM}{RT}$

Formula for new density will be:

$\rho_2=\frac{P_2M}{RT_2}$

where,

$P_2$ = new pressure of gas = 15 kPa

$T_2$ = new temperature of gas = $75^oC=273+75=348K$

M = molar mass of carbon dioxide gas = 44 g/mole

R = gas constant = 8.314 L.kPa/mol.K

$\rho$ = new density

Now put all the given values in the above equation, we get:

$\rho_2=\frac{(15kPa)\times (44g/mole)}{(8.314L.kPa/mol.K)\times (348K)}$

$\rho_2=0.2281g/L$

The new density of carbon dioxide gas is 0.2281 g/L

5 0

3 years ago