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4 years ago

Convert 3 moles of h2o into grams

1 answer:

4 0

To convert 3 mol H2O to grams, just multiply by the molar mass of H2O.

3 mol H2O * 18 g H2O / 1 mol H2O = 54 g H2O

Hope this helped.

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When the equation: __Fe2O3(s) + __CO(g) → __Fe(l) + __CO2(g) is correctly balanced using the smallest whole numbers, the coeffic

Aleksandr-060686 [28]

Fe2O3+3CO= 2Fe +3CO2 is the balanced equation

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4 years ago

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A compound contains 36.48% Na, 25.41% S, and 38.11% O. Find it’s empirical formula

MAXImum [283]

Answer:

we can use 100g of compounds as the basis.

Explanation:

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2 years ago

Does it take more, less, or the same amount of heat to melt 1.0 kg of ice at 0°C, or to bring 1.0 kg of liquid water at 0°C to t

Murljashka [212]

Answer : It takes less amount of heat to metal 1.0 Kg of ice.

Solution :

The process involved in this problem are :

$(1):H_2O(s)(0^oC)\rightarrow H_2O(l)(0^oC)\\\\(2):H_2O(l)(0^oC)\rightarrow H_2O(l)(100^oC)$

Now we have to calculate the amount of heat released or absorbed in both processes.

For process 1 :

$Q_1=m\times \Delta H_{fusion}$

where,

$Q_1$ = amount of heat absorbed = ?

m = mass of water or ice = 1.0 Kg

$\Delta H_{fusion}$ = enthalpy change for fusion = $3.35\times 10^5J/Kg$

Now put all the given values in $Q_1$ , we get:

$Q_1=1.0Kg\times 3.35\times 10^5J/Kg=3.35\times 10^5J$

For process 2 :

$Q_2=m\times c_{p,l}\times (T_{final}-T_{initial})$

where,

$Q_2$ = amount of heat absorbed = ?

m = mass of water = 1.0 Kg

$c_{p,l}$ = specific heat of liquid water = $4186J/Kg^oC$

$T_1$ = initial temperature = $0^oC$

$T_2$ = final temperature = $100^oC$

Now put all the given values in $Q_2$ , we get:

$Q_2=1.0Kg\times 4186J/Kg^oC\times (100-0)^oC$

$Q_2=4.186\times 10^5J$

From this we conclude that, $Q_1$ that means it takes less amount of heat to metal 1.0 Kg of ice.

Hence, the it takes less amount of heat to metal 1.0 Kg of ice.

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3 years ago

What makes a colloidal dispersion stable?

alexgriva [62]

1.regulating ph
2.heating
3.adding some oppositely charged colloids

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3 years ago

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Why rock from earth cannot be used to determine earth age

Reptile [31]

Answer:So far scientists have not found a way to determine the exact age of the Earth directly from Earth rocks because Earth's oldest rocks have been recycled and destroyed by the process of plate tectonics. If there are any of Earth's primordial rocks left in their original state, they have not yet been found.

Explanation:

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3 years ago