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umka21 [38]
3 years ago
7

A model of an ideal gas is shown here. A student designs an experiment to test the impact of increasing the pressure on the syst

em. Which prediction is most likely to be supported by the data?
A) As pressure on the gas increases, the volume and temperature will both decrease.
B) As the pressure on the gas increases, the volume and temperature will also increase.
C) As pressure on the gas increases, the volume will decrease and the temperature will increase.
D) As pressure on the gas increases, the volume will increase and the temperature will decrease.
Chemistry
1 answer:
k0ka [10]3 years ago
6 0

A. As pressure on the gas increases, the volume and temperature will both decrease

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corrected question:

Determining Density and Using Density to Determine Volume or Mass

(a) Calculate the density of mercury if 1.00 × 10 g occupies a volume of 7.36 cm³

(b) Calculate the volume of 65.0 g of liquid methanol (wood alcohol) if its density is 0.791 g/mL.

(c) What is the mass in grams of a cube of gold (density = 19.32 g/cm) if the length of the cube is 2.00 cm?

(d) Calculate the density of a 374.5-g sample of copper if it has a volume of 41.8 cm³ A student needs 15.0 g of ethanol for an experiment. If the density of ethanol is 0.789 g/mL, how many milliliters of ethanol are needed? What is the mass, in grams, of 25.0 mL of mercury (density = 13.6 g/mL)?

Answer:

density = \frac{mass}{volume}

ρ=m/v ,m=ρv,    v=m/ρ

(a)m=1*10g  , v=7.36cm³

    ρ=10/7.36 =1.36g/cm³

(b) m=65g, ρ=0.791 g/mL.

   v= 65/0.791 =82.17g/mL

(c) ρ=19.32g/cm³, l=2cm, v=l³=8cm³

    m=19..32*8=154.56g/cm³

(d) mass of copper=374.5g , v=41.8cm³

   ρ=374.5/41.8 =8.96g/cm³

 mass of ethanol=15g,  density of ethanol=0.789g/mL

v=15/0.789 =19.01mL

volume of mecury=25mL, density of mercury=13.6g/mL

m=25*13.6=340g

4 0
3 years ago
A structure made up of two or more types of tissue is a
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Answer:

A structure made up of two or more types of tissue is an organ

Explanation:

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Which characteristic might identify a substance as an Arrhenius base?
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Answer: a

Explanation: because an Arrhenius acid is a compound that increases the H + ion concentration in aqueous solution. An Arrhenius base is a compound that increases the OH − ion concentration in aqueous solution.

5 0
3 years ago
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Find the equation of directrix of the parabola is given by 64x equals to -ySquare ​
ANEK [815]

Answer:

Given equation of parabola is

and

2

=64x ......(i)

The point at which the tangent to the curve is parallel to the line is the nearest point on the curve.

On differentiating both sides of equation (i), we get

2 y

dx

d y

=64

⇒

dx

d y

=

and

32

Also, slope of the given line is −

3

4

∴−

3

4

=

and

32

⇒and=−24

From equation (i), (−24)

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=64x⇒x=9

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Explanation:

This is the correct answer you want

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qwelly [4]

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0.67 mole/litre

Explanation:

the molarity equall no. of moles ÷ volume of sol.

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