Ask question

Ask question

All categories

4 years ago

8

Liquid petrol does not ignite spontaneously in air

1 answer:

Naya [18.7K]4 years ago

8 0

The statement "Liquid petrol does not ignite spontaneously in air" is true. It needs a light nenergy or a spark for the combustion reaction to occur. Without it, it would not ignite <span>spontaneously in air</span>

You might be interested in

Briefly describe the procedures to prepare a burette and pipette for titration

adelina 88 [10]

The burette or pipette is first rinsed with water and secondly with the solution that it will contain.

The burette and pipette are laboratory apparatus that are used to hold liquids especially during titration. The pipette mostly serves the purpose of transferring liquids from one container to another. The burette is used to run solutions into the flask.

To prepare both burette and pipette for titration, they are first rinsed with water and secondly with the solution that they are to contain. This helps to prevent contamination.

Learn more: brainly.com/question/5624100

7 0

3 years ago

You have 16.0 g of some compound and you perform an experiment to remove all of the oxygen, 11.2 g of iron is left. What is the

Makovka662 [10]

The empirical formula of this compound is $Fe_2O_3$

<h3>Empirical formula </h3>

To calculate the empirical formula of a compound, the value of moles of each element is needed.

As we have the information of the mass value, we will use the molar mass expression, which corresponds to:

$MM_O = 16g/mol\\MM_Fe = 55.8g/mol$

$MM = \frac{m}{mol}$

O

$16 = \frac{4.8}{x}$

$x = 0.3mol$

Fe

$55.8=\frac{11.2}{x}\\x = 0.2$

As the value of the empirical formula must be an integer, simply multiply the two values by a common factor:

$O = 0.3 \times 10 = 3\\Fe = 0.2 \times 10 = 2$

$Fe_2O_3$

So, the empirical formula of this compound is $Fe_2O_3$ .

Learn more about empirical formula: brainly.com/question/1247523

3 0

2 years ago

A gravel can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separa

butalik [34]

answer:

heterogenous mixture

Explanation:

6 0

3 years ago

Read 2 more answers

What gas in the air is used by plants to make their own food? (2 points)

Varvara68 [4.7K]

Answer:

Carbon Dioxide

Explanation:

Carbon dioxide gets turned into oxygen

5 0

3 years ago

Read 2 more answers

I suck in science so pls help<br> thx

CaHeK987 [17]

Answer:

Sometimes it is not an increase in force that is desired, but an increase in

distance or speed. Take a baseball bat as an example. A bat is a class 3

lever, meaning the effort is in the middle. This means that it has a

mechanical advantage of less than one. However, when the bat is swung,

the end of the bat is travelling at a much higher speed than the location at

which the batter is holding it. This allows the ball to leave the bat at a

much higher speed than it would with a class one or two lever.

Explanation:

7 0

3 years ago