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3 years ago

How did the grandmother show her gratitude towards her granddaughter

Chemistry

1 answer:

coldgirl [10]3 years ago

3 0

Answer:

vgffffgggggvghvxgyfdgubvhumigrrdghg

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Write the chemical formula for carbon tetrachloride and calcium bromide

aliya0001 [1]

Carbon tetra chloride = CCl4

calcium bromide = CaBr2

8 0

3 years ago

Consider the synthesis of water as shown in Model 3. A container is filled with 10,0 g of H, and

kondor19780726 [428]

Answer:

Oxygen, O₂ is the limiting reactant

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

2H₂ + O₂ —> 2H₂O

Next, we shall determine the masses of H₂ and O₂ that reacted from the balanced equation. This can be obtained as follow:

Molar mass of H₂ = 2 × 1 = 2 g/mol

Mass of H₂ from the balanced equation = 2 × 2 = 4 g

Molar mass of O₂ = 16 × 2 = 32 g/mol

Mass of O₂O from the balanced equation = 1 × 32 = 32 g

SUMMARY:

From the balanced equation above,

4 g of H₂ reacted with 32 g of O₂.

Finally, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above,

4 g of H₂ reacted with 32 g of O₂.

Therefore, 10 g of H₂ will react with

= (10 × 32)/4 = 80 g of O₂.

From the calculations made above, we can see that a higher mass (i.e 80 g) of O₂ than what was given (i.e 5 g) is required to react completely with 10 g of H₂. Therefore, O₂ is the limiting reactant.

5 0

3 years ago

Calculate molecules in 1dm^3 of oxygen

Archy [21]

Number of molecules in 1 dm³ Oxygen = 2.71 x 10²²

<h3>Further explanation</h3>

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

1 dm³ of oxygen = 1 L Oxygen

mol Oxygen :

$\tt \dfrac{1}{22.4}=0.045`mol$

molecules of Oxygen :

n=mol=0.045

No = 6.02.10²³

$\tt N=n\times No\\\\N=0.045\times 6.02\times 10^{23}\\\\N=2.71\times 10^{22}$

5 0

3 years ago

What determines an object's potential energy?

Flura [38]

Answer:

potential energy of an object depend on three factors. If an object has less mass,it will travel more distance, and Higher the mass of an object Distance tra

Explanation:

7 0

3 years ago

Read 2 more answers

How many moles of O, will occupy 1.00 L at a temper-

Kay [80]

Moles of O₂ = 3.92

<h3>Further explanation</h3>

Given

V=1 L

T=-118 °C + 273 = 155 K

P = 49.77 atm

Required

moles of O₂

Solution

the gas equation can be written

$\large {\boxed {\bold {PV = nRT}}}$

where

P = pressure, atm

V = volume, liter

n = number of moles

R = gas constant = 0.08206 L.atm / mol K

T = temperature, Kelvin

Input the value :

n= PV/RT

$\tt n=\dfrac{49.77~atm\times 1~L}{0.082\times 155}=3.92~moles$

7 0

3 years ago