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Leni [432]
4 years ago
12

Mg metal is placed in HCl and a gas is liberated. This is an example of a

Chemistry
1 answer:
Dafna1 [17]4 years ago
8 0

Answer:

The answer to your question is: b) Chemical property

Explanation:

Physical property: is when matter changes is physical state but it does not change its composition. For example, evaporation, condensation, sublimation,  solidification, etc.

Chemical property, is when matter changes its composition because the reactants forms products.

In this question we have:

                                         Mg    +       HCl      ⇒      MgCl₂ + H₂↑

In this reaction, there are Mg and HCl, and after the reaction MgCl₂ and H₂ so, there was a change, and this reaction is a chemical change.

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The strength of an acid is affected by the polarity of the bond connected to the acidic hydrogen. The more highly polarized this
Shtirlitz [24]

Answer:

The answer is "\bold{HClO_3 > HClO_2 >HClO > HBrO}"

Explanation:

We arrange oxoacids to decrease the intensity of acids in this question. Or we may conclude all this from strongest to weakest acids they order oxoacids, that's why above given order is correct.

5 0
3 years ago
2. Rank the metals in group 2 according to their relative reactivities.
Inga [223]

Answer:

Explanation:

https://www.slideshare.net/Thivyaapriya/inorganic-chemistry-group-2

Has all the info you need!

7 0
3 years ago
A chemist must prepare 575.mL of 1.00M aqueous sodium carbonate Na2CO3 working solution. He'll do this by pouring out some 1.58M
igor_vitrenko [27]

Answer : The volume in mL of the sodium carbonate stock solution is 364 mL.

Explanation :

According to dilution law:

M_1V_1=M_2V_2

where,

M_1 = molarity of aqueous sodium carbonate

M_2 = molarity of aqueous sodium carbonate stock solution

V_1 = volume of aqueous sodium carbonate

V_2 = volume of aqueous sodium carbonate stock solution

Given:

M_1 = 1.00 M

M_2 = 1.58 M

V_1 = 575 mL

V_2 = ?

Now put all the given values in the above formula, we get:

1.00M\times 575mL=1.58M\times V_2

V_2=363.92mL\approx 364mL

Therefore, the volume in mL of the sodium carbonate stock solution is 364 mL.

8 0
3 years ago
Another term for equilibrium price is a. dynamic price. b. market-clearing price. c. quantity-defining price. d. balance price.
victus00 [196]

Answer:

Option B is correct.

Another name for equilibrium price is **market-clearing price**

Explanation:

Equilibrium price is defined as the price at which the quantity of products/goods/services demanded is equal to/matches the quantity of products/goods/services supplied.

The equilibrium price is also called the market clearing price because, at this price, there is no supply leftover (surplus) or demand leftover (deficit). The market is literally cleared!

4 0
3 years ago
Lab report Motion: 3. What methods are you using to test this (or each) hypothesis?
nadya68 [22]

Answer: You can increase the weight, then test the speed, and make the weight normal and test the speed, and mark which one travels faster.

Explanation: This would test your hypothesis by comparing the speeds of the cars when more mass is added. Calculating the difference of the speed with more mass, and the speed with normal mass would give you your answer. A positive number would prove your hypothesis and a negative number would disprove it.

8 0
3 years ago
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