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BlackZzzverrR [31]
3 years ago
14

My mom keeps saying this is it true​

Chemistry
2 answers:
victus00 [196]3 years ago
8 0

Answer:

she's probably right.

I mean moms are always right... Right-

Explanation:

myrzilka [38]3 years ago
3 0

Answer:

true

Explanation:

dunno what a dp is but loves all around.

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A gas has a volume of 45.0 mL and a pressure of .98 atm. If the pressure increased to 2.1 atm and the temperature remained the s
goblinko [34]

Answer: The new volume is 95.45 mL.

Explanation:

Given: V_{1} = 45.0 mL,         P_{1} = 0.98 atm

P_{2} = 2.1 atm,               V_{2} = ?

According to Boyle's law, at constant temperature the pressure of a gas is inversely proportional to its volume.

Therefore, formula used to calculate the new volume is as follows.

\frac{P_{1}}{V_{1}} = \frac{P_{2}}{V_{2}}

Substitute the values into above formula as follows.

\frac{P_{1}}{V_{1}} = \frac{P_{2}}{V_{2}}\\\frac{0.98 atm}{45.0 mL} = \frac{2.1 atm}{V_{2}}\\V_{2} = 95.45 mL

Thus, we can conclude that the new volume is 95.45 mL.

7 0
4 years ago
Find the volume occupied by 4.00 g of helium gas at <br> 25.0o C and 1.18 atm of pressure.
Triss [41]

Answer: 41.46 L

Explanation:

La ecuación que describe  relación entre presión, volumen,  temperatura y la cantidad (en moles)

de un gas ideal es:   PV = nRT

Donde:  P = Presión absoluta ,  V= Volumen  , n = Moles de gas , R = Constante universal de los gases ideales,  T = Temperatura absoluta,

R = 0.082 L. atm/mol. °K

V = nRT/P

Calculanting n

n = mass/ molecular mass

<h3>n = 4 g / 2g. mol⁻¹</h3><h3>n = 2 mol</h3><h3>T =25⁰ + 273 ⁰K = 298 ⁰K</h3><h3>V = (2 mol ₓ0.082 L. atm / mol.°K x 298 ⁰K) / 1.18 atm = 41.46 L</h3>
6 0
3 years ago
What is your question in climate change?​
Kruka [31]

Answer:

Why has my town experienced record-breaking cold and snowfall if the climate is warming? Is there scientific consensus that people are causing today's climate change? Do natural variations in climate contribute to today's climate change?

Explanation:

Yan po ang answer tama po yan

8 0
2 years ago
Read 2 more answers
Describe what a mole is -- its value, its uses, the general concept.
Anna [14]
A mole is the assemblage of 6.022×10^23 ions.This number is also known as Avogadro Number.

Avogadro constant=6.022×10^23 mol^-1
5 0
3 years ago
In the following reaction, eight moles of sodium hydroxide is broken down into four moles of sodium oxide and four moles of wate
maxonik [38]

Answer:

21.344%

Explanation:

For the given chemical reaction, 8 moles of the reactant should produce 4 moles of Na_{2}O. However, 195 g of Na_{2}O was produced instead. The molar mass of Na_{2}O is 61.9789 g/mol.

Thus, the moles of Na_{2}O produced = 195/61.9789 = 3.1462 moles

The percent error = [(Actual -Experiment)/Actual]*100%

The percent error =  [(4.00 - 3.1462)/4.00]*100% = (0.85376/4.00)*100% = 21.344%

8 0
4 years ago
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