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2 years ago

Which of this is the method by which fire extinguisher works?

Chemistry

2 answers:

Andrew [12]2 years ago

8 0

Answer:

the answer is a.cut off the supply of oxygen

katen-ka-za [31]2 years ago

6 0

Answer:

Option D

Explanation:

There are 5 main fire extinguisher types – Water, Foam, Dry Powder, CO2 and Wet Chemical. Hence the different chemicals released will react with oxygen in the air to prevent the fire from getting sufficient oxygen and spreading.

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Which soup would likely be more flavorful, a nicely heated but not too hot to eat bowl of soup or a bowl of leftover soup direct

ira [324]

Answer:

The soup that is not too hot to eat would be better

Explanation:

because the flavours would be fresher than if it is leftover

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2 years ago

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Which notation represents the largest atomic radius?

Darina [25.2K]

Answer:

Calcium(Ca)

Explanation:

Atomic radius is the distance from the nucleus of an atom the outermost energy shell or energy level.
The atomic radii of metals are greater than the ionic radii since metals form ions by losing electrons.
Calcium atom has a larger atomic radius compared to magnesium atom because it has more energy levels. Calcium atoms have four energy levels while magnesium atoms have three energy levels.

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2 years ago

A sample contains 0.1895 g of salt per 50 g of seawater. What is its salinity?

Naily [24]

Use the rule of 3 simple
50 g mean 100% 0,1895 mean x% cross multiplie and calcule the x value x = 0,1895*100/50 = ?%

7 0

2 years ago

2. Convert 340,000 to scientific notation

arlik [135]

Answer:

3.4 x 10^5

Explanation:

8 0

2 years ago

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The ionization of pure water forms _____.

Evgesh-ka [11]

Answer: The ionization of pure water forms <u><em>hydroxide and hydronium ions.</em></u>

Explanation:

Ionization is a reaction in the pure water in which water breaks down into its constituting ions that hydronium ion and hydroxide ions.

$H_2O+H_2O\rightleftharpoons H_3O^++OH^-$

One molecule of water looses its proton to form hydroxide ion and l=the lost protons get associated with another water molecule to form hydronium ion.

4 0

2 years ago