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Vaselesa [24]
3 years ago
7

With the kinetic energy of a sample increases the____ will also increase

Chemistry
1 answer:
klemol [59]3 years ago
4 0

Answer:

Its Temperature.

Explanation:

  • Kinetic energy is the energy possessed by a body while in motion. Potential energy on the other hand is the energy possessed by a body based on its position.
  • Kinetic energy of a body is determined by the equation; K.E = 3RT/2;
  • From the equation, kinetic energy is directly proportional to the temperature of the system and therefore an increase in the kinetic energy of a sample causes an increase in temperature of the system.
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A chemist must prepare 800.0mL of sodium hydroxide solution with a pH of 12.10 at 25°C. She will do this in three steps: Fill a
AnnZ [28]

Answer:

0.42 g

Explanation:

<u>We have: </u>

pH = 12.10 (25 °C)

V = 800.0 mL = 0.800 L    

To find the mass of sodium hydroxide (NaOH) we can use the pH:

14 = pH + pOH

pOH = 14 - pH = 14 - 12.10 = 1.90

pOH = -log ([OH^{-}])

[OH]^{-} = 10^{-pOH} = 10^{-1.90} = 0.013 M

Now, we can find the number of moles (η) of OH:

\eta = ([OH]^{-})*V = 0.013 mol/L * 0.800 L = 1.04 \cdot 10^{-2} moles

Since we have 1 mol of OH in 1 mol of NaOH, the number of moles of NaOH is equal to 1.04x10⁻² moles.

Finally, with the number of moles we can find the mass of NaOH:

m = \eta * M

<em>Where M is the molar mass of NaOH = 39.9 g/mol </em>

m = 1.04 \cdot 10^{-2} moles * 39.9 g/mol = 0.42 g

Therefore, the mass of sodium hydroxide that the chemist must weigh out in the second step is 0.42 g.

I hope it helps you!

3 0
3 years ago
Three students use a meterstick with millimeter markings to measure a length of wire. Their measurements are 3 cm, 3.3 cm, and 2
Volgvan

Answer: 3 cm

Explanation:

7 0
3 years ago
Read 2 more answers
A 50g ice cube at 0 degrees celcius is added to a glass containing 400g of water at 45 degrees celcius. What is the final temper
PolarNik [594]
In a system, heat that is gained and lost should be conserved. We calculate as follows:

Heat from phase change + sensible heat from the change in tempeture of the ice = sensible heat from the change in temperature of water

mH(fusion) + mCpΔT = mCpΔT
.05 (335) + .050(4.184)( T - 0) = .4 (4.184)(45 - T)
T = 34.8 °C
4 0
3 years ago
Cyanobacteria, also known as blue-green algae, are a kind of bacteria found in lakes. These organisms make their own food throug
Zina [86]

Answer:

Explanation:

Cyanobacteria, also known as blue-green algae, are a kind of bacteria found in many lakes. These organisms make their own food through photosynthesis. Small animals, including mayfly larvae, eat the cyanobacteria. ... The small fish provide food for larger fish, such as walleye.

6 0
3 years ago
Read 2 more answers
2) If the density of chloroform is 1.48 g/mL, what is the volume of 541 g of chloroform?
Maurinko [17]

Answer:

V = 365.54 mL

Explanation:

Given that,

The density of chloroform, d = 1.48 g/mL

The mass of chloroform, m = 541 g

We need to find the volume of chloroform.

We know that,

Density = mass/volume

So,

V=\dfrac{m}{d}\\\\V=\dfrac{541\ g}{1.48\ g/mL}\\\\=365.54\ mL

So, the volume of chloroform is 365.54 mL.

5 0
3 years ago
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