All categories

4 years ago

A gas that extinguishes a flame is hydrogen. true or false

Chemistry

1 answer:

DedPeter [7]4 years ago

3 0

This is true because it reacts with oxygen

You might be interested in

One method of favoring the formation of an ester is to add excess acetic acid. Suggest another method, involving the right-hand

Inessa [10]

Answer: the formation of ester is an exothermic reaction.. therefore, decreasing the temperature will make the reaction proceed forward, producing more esters

Explanation:

7 0

4 years ago

Earth’s water is mostly

sergeinik [125]

The answer would be the last oneee

5 0

3 years ago

Read 2 more answers

Organic compounds with two oh groups per molecule are called

mafiozo [28]

Glycol
Hope this helps!

4 0

3 years ago

5. A gas has a pressure of 310 kPa at 237 degrees C. What will its pressure be at 23 degrees C?)

slavikrds [6]

Answer:

The pressure of the gas at 23 C is 179.92 kPa.

Explanation:

Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

In short, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.

Gay-Lussac's law can be expressed mathematically as follows:

$\frac{P}{T} =k$

Studying two states, one initial 1 and the other final 2, it is satisfied:

$\frac{P1}{T1} =\frac{P2}{T2}$

In this case:

P1= 310 kPa
T1= 237 C= 510 K (being 0 C= 273 K)
P2= ?
T2= 23 C= 296 K

Replacing:

$\frac{310 kPa}{510 K} =\frac{P2}{296 K}$

Solving:

$P2=296 K*\frac{310 kPa}{510 K}$

P2= 179.92 kPa

The pressure of the gas at 23 C is 179.92 kPa.

5 0

3 years ago

carol accidentally dropped a container of salt and sodium chloride, into a container of a dark grey metal. carol is pretty sure

o-na [289]

Explanation:

The best way to separate the mixture is by using a bar magnet. We explore the magnetic property of the iron fillings in the mixture to separate it out.

The mixture is spread out thinly on a flat surface.
A bar magnet is hovered above the spread of the mixture
The magnet attracts the iron fillings to itself
This will leave the salt behind in the mixture.

4 0

3 years ago