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solniwko [45]
3 years ago
9

2) An object accelerates 2.0 m/s2 when a

Chemistry
1 answer:
Anastasy [175]3 years ago
3 0

Answer:

<h2>0.17 kg</h2>

Explanation:

The mass of the object can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{2}{12}  =  \frac{1}{6}   \\  = 0.166666...

We have the final answer as

<h3>0.17 kg</h3>

Hope this helps you

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A eudiometer contains a 65.0 ml sample of a gas collected
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Answer:

53.1 mL

Explanation:

Let's assume an ideal gas, and at the Standard Temperature and Pressure are equal to 273 K and 101.325 kPa.

For the ideal gas law:

P1*V1/T1 = P2*V2/T2

Where P is the pressure, V is the volume, T is temperature, 1 is the initial state and 2 the final state.

At the eudiometer, there is a mixture between the gas and the water vapor, thus, the total pressure is the sum of the partial pressure of the components. The pressure of the gas is:

P1 = 92.5 - 2.8 = 89.7 kPa

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6 0
4 years ago
How many molecules of Iron(II)oxide are present in 35.2*10^-23 g of Iron (II)oxide?
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Answer:

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{ \tt{ = (56 \times 2) + (16 \times 3)}} \\  = 160 \: g

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{ \tt{ \frac{35.2 \times  {10}^{ - 23} }{160} }} \\  = 2.2 \times  {10}^{ - 24}  \: moles

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{ \tt{ = 2.2 \times  {10}^{ - 24}  \times 6.02 \times  {10}^{23} }} \\  = 1.3244 \: molecules

4 0
3 years ago
The compound zinc fluoride is a strong electrolyte. write the transformation that occurs when solid zinc fluoride dissolves in w
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Strong electrolytes by definition are those compounds that completely dissociates into their component ions when dissolved in water. The chemical formula for the zinc fluoride is,
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This means that each formula unit is composed of one atom of zinc and 2 atoms of fluoride. The ions comprising the unit are Zn²⁺ and F⁻. The dissociation is as shown below,
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When dissolved in water it is expected that the compound dissociates into three different ions, one Zn²⁺ and two F⁻. 
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3 years ago
Determine the ph of a 0.00598 m hclo4 solution. 1.777 6.434 7.566 2.223 3.558
Black_prince [1.1K]
Answer: 2.223
Explanation:
HClO4, also known as perchloric acid, is a very strong. This means we can assume that complete dissociation occurs.
This means that:
[H+] = [HClO4] = <span>0.00598

pH = -log[H+]
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Note: The base of the log is 10 (conventionally we don't write the base if it is 10)</span>
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