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3 years ago

PLZ HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry

2 answers:

Romashka-Z-Leto [24]3 years ago

6 0

Answer: Option (A)

Explanation: In the given figure, we observe that the wind direction is from the east to west and having a speed of about 5 knots which can be considered to be calm.

The temperature is 78° and dew point is 64 and it has about 70% of chances of rain shower.

Note- Weather station model must be referred in order to understand what the numbers and the symbols depicts.

MA_775_DIABLO [31]3 years ago

4 0

There is 70 percent probability of rain showers.

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4 years ago

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4 years ago

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What type reaction is in the example below? Na-Br + Cl-Cl --> Na-Cl + Br-Br

Elis [28]

The type of reaction in the example below is a double replacement.

A double replacement can be identified by the switch between two reactants. This can be verified because both a Br and Cl are being switched to a new position in the reaction.

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4 years ago

Cecilia and tegan are learning about things that dissolve in water. They put sugar into a cup of water and saw that the sugar be

damaskus [11]

Answer:

1. stir with a spoon

Explanation:

if you stir the water with a spoon, it quickens the process at which the sugar dissolves. The spoon you could say also speeds it all up. Think of it this way, a meteor entering earths atmosphere, will it get smaller faster going 50 mph, or 100mph? the regular is 50, but when you got the spoon, it increases (more gravity force on the meteor= that 100mph).

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8 0

3 years ago

The total pressure of gas collected over water is 740.0 mmHg and the temperature is 24.0°C What is the pressure of

andrew11 [14]

The pressure of the hydrogen gas formed is given by its partial pressure at

the given temperature.

The pressure of the hydrogen gas formed is approximately 717.38 mmHg.

Reasons:

The pressure of the hydrogen gas formed is given by the difference

between the vapor pressure of the gas collected and the vapor pressure of

water.

The vapor pressure of water at 24.0 °C is given by the Clausius-Clapeyron

Equation as follows;

$ln \left(\dfrac{P_2}{P_1} \right) = \dfrac{\Delta H_{vap}}{R} \cdot \left(\dfrac{1}{T_1} - \dfrac{1}{T_2} \right)$

Where;

P₁ = The partial pressure at temperature, T₁

P₂ = The pressure at temperature, T₂

We get;

$ln \left(\dfrac{P_2}{23.8 \ mmHg} \right) = \dfrac{44,000 \ J/mol}{8.3145 \ J/(mol \cdot K)} \cdot \left(\dfrac{1}{298 \ K} - \dfrac{1}{297.15 \ K} \right)$

The pressure of water at 24.0 °C, P₂ ≈ 22.62 mmHg

The vapor pressure of water at 24.0°C is 22.62 mmHg

Therefore;

The pressure of the hydrogen gas formed ≈ 740.0 mmHg - 22.62 mmHg = 717.38 mmHg

Learn more here:

brainly.com/question/24073811

6 0

3 years ago