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3 years ago

There are three puddles of different sizes on a sidewalk:

2 answers:

7 0

The one property that you can always depend on to change vapor pressure is temperature. So as the water's temperature increases so does the vapor pressure. The warmer the water, the higher the vapor pressure.

Blank one: Hot water

Blank Two: Temperature

valina [46]3 years ago

4 0

Answer: The <em>hot water</em> puddle has the highest vapor pressure because vapor pressure depends on<em> temperature.</em>

Explanation:

Vapor pressure of the liquid is defined pressure exerted by the vapors of the liquid on its liquid surface. It increases with increase in temperature and vice-versa. And it also depends upon surface area of the liquid.

A medium puddle with hot water will have maximum vapor pressure because the hot water has higher temperature from the remaining other two puddles.

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Love You All..... Friends........

vivado [14]

Answer:

You 2

Explanation: <3 <3 <3

3 0

1 year ago

Read 2 more answers

What is the pH of a 0.0288 M solution of ammonia (Kb 1.8 x 10-5)?

elena-14-01-66 [18.8K]

Answer:

10.86

Explanation:

Given that:

$K_{b}=1.8\times 10^{-5}$

Concentration = 0.0288 M

Consider the ICE take for the dissociation of ammonia as:

NH₃ + H₂O ⇄ NH₄⁺ + OH⁻

At t=0 0.0288 - -

At t =equilibrium (0.0288-x) x x

The expression for dissociation constant of ammonia is:

$K_{b}=\frac {\left [ NH_4^{+} \right ]\left [ {OH}^- \right ]}{[NH_3]}$

$1.8\times 10^{-5}=\frac {x^2}{0.0288-x}$

x is very small, so (0.0288 - x) ≅ 0.0288

Solving for x, we get:

x = 7.2×10⁻⁴ M

pOH = -log[OH⁻] = -log(7.2×10⁻⁴) = 3.14

Also,

pH + pOH = 14

So, pH = 10.86

3 0

2 years ago

The density of pure silver is 10.5 g/cm3 at 20°C. If 5.25 g of pure silver pellets is added to a graduated cylinder containing 1

iren [92.7K]

Answer:

The correct answer is 16.6 mL

Explanation:

The density of a substance is defined as its mass per unit of volume. Thus:

density = mass/volume

So, to calculate volume: volume = mass/density

Given:

density= 10.5 g/cm³

mass= 5.25 g

We calculate the volume occupied by silver as follows:

volume= mass/density= (5.25 g)/(10.5 g/cm³)= 0.5 cm³

Moreover, we know that 1 cm³= 1 ml. So, a mass of 5.25 g of pure silver occupies a volume of 0.5 ml. If we add the mass of silver to a graduated cylinder with 16.1 mL of water, the final volume will be given by the initial volume of water plus the volume occupied by silver:

volume level = 16.1 mL + 0.5 mL = 16.6 mL

7 0

2 years ago

The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the recommended pressure being in the rang

Mashutka [201]

Answer:

1.36 atm

Explanation:

First, we have to transform lb and in² into the International System of Units.

The international unit for force is the Newton. The equivalence (based on Earth's gravity) is 1 lb = 4.448 N.
The international unit for area is the m². The equivalence is 1 m² = 1550 in².
The resulting unit is known as Pascal. 1 Pa = 1 N/m².

$\frac{27.0lb}{in^{2}} .\frac{4.448N}{1lb} .\frac{1550in^{2}}{1m^{2} } =1.38 \times 10^{5} Pa$

The equivalence between Pascal and atm is 101,325 Pa = 1 atm. Then,

$1.38 \times 10^{5} Pa.\frac{1atm}{101,325Pa} =1.36atm$

6 0

2 years ago

PLEASE HELP THIS IS DUE SOON

aliya0001 [1]

Answer:

I would say 3 but I not exactly sure

4 0

2 years ago