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Amiraneli [1.4K]
3 years ago
14

Help me please my family brainly​

Chemistry
1 answer:
suter [353]3 years ago
5 0

Answer:

a) In the first chemical reaction, reduction of Sulphur dioxide occurs in which oxygen is removed. In oxidation reaction, oxygen is added to Magnesium forming Magnesium oxide.

b) Hydrogen bromide react with chlorine molecule, oxidation of hydrogen bromide is done and hydrogen is detached from bromine atom and reduction occurs when hydrogen is added to chlorine molecule forming hydrochloric acid and bromine molecule.

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How many grams of oxalic acid dihydrate H2C2O4 ·2H2O, a diprotic acid, are needed to react with 20.00 mL of 0.4500 M NaOH?
Sauron [17]
With the given components above, the chemical reaction required to solve the problem is <span>H2C2O4*2H2O + 2 NaOH = 4 H2O + Na2C2O<span>4 where 1 mole of diprotic acid needs 2 moles of NaOH to complete the reaction.In this case, given </span></span><span>0.4500 M NaoH and 0.02 L of it, the moles diprotic acid needed is 0.0045 moles. This is equivalent to 0.351 grams.</span>
6 0
3 years ago
Read 2 more answers
Distinguish between monopoly and monopolistic competition
blondinia [14]

Answer:

<u>○</u><u>MONOPOLY</u><u> </u><u>○</u>

○1▪︎Monopoly is the type of imperfect competition where a seller or producer captures the majority of market share due to lack of substitutes or competitors.○

○2▪︎Nil competition exists as only one seller present in the market.○

<u>○</u><u>MONOPOLISTIC</u><u> </u><u>○</u>

○1▪︎Monopolistic competition is a type of imperfect competition where many sellers try to capture market share by differentiating their products.○

○2▪︎Very high competition exists as there are many sellers.○

7 0
3 years ago
Calcium (Ca) and diatomic oxygen (O2) combine to form calcium oxide (CaO). The data table below compares the properties of these
Elenna [48]

A chemical reaction occurred because calcium oxide has different properties than calcium and diatomic oxygen. The correct option is A.

<h3>What are chemical reactions?</h3>

A chemical reaction is said to occur when the chemical properties of substances change during the course of the reaction.

From the illustration, the chemical properties of calcium oxide are unique from that of calcium and oxygen. Thus, calcium oxide has become a new substance entirely.

Once a reaction leads to the formation of new substances, such a reaction is a chemical reaction.

More on chemical reactions can be found here: brainly.com/question/22817140

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3 0
2 years ago
The atomic weight of an atom is the sum of the mass of the particles in the nucleus of the atom. These particles are called?
Ludmilka [50]

Answer:

c) neutrons and protons

Explanation:

The nucleus of the atom contains only neutrons and protons. Electrons are not in the nucleus but outside the nucleus in 'atomic orbitals'.

5 0
2 years ago
What is the density of copper?
castortr0y [4]
Copper has a density of 8.96 g/cm^3
7 0
3 years ago
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