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3 years ago

What is Ka for HNO2(aq)

Chemistry

2 answers:

guajiro [1.7K]3 years ago

7 0

The correct answer is B

Sergio039 [100]3 years ago

3 0

Answer:

I'm not sure if it's c I might be wring

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Although Leonardo Da Vinci was well-known for being an artist, how has he contributed to the fields of motion and medicine?

Travka [436]

Leonardo da Vinci was a very talented artist who painted the Mona Lisa, the Last Supper, and many more famous paintings. These works were famous because of Leonardo’s understanding Linear Perspective, his integration of light and shadow, and his superb understanding of anatomy.

6 0

3 years ago

Read 2 more answers

Calculate how many grams of sodium hypochlorite can be theoretically formed when 1.23 mol of sodium hydroxide is combined with 1

elixir [45]

Answer:

45.78 g NaClO

Explanation:

The reaction that takes place is:

2NaOH + Cl₂ → NaCl + NaClO + H₂O

In order to react completely, 1.36 moles of chlorine would require (2*1.36) 2.72 moles of NaOH. There are more moles than that, so NaOH is the limiting reactant.

We <u>calculate the moles of NaClO formed</u>, from the limiting reactant:

1.23 mol NaOH * $\frac{1molNaClO}{2molNaOH}$ = 0.615 mol NaClO

Finally we <u>convert NaClO moles to grams</u>, using its <em>molecular weight</em>:

0.615 mol NaClO * 74.44 g/mol = 45.78 g NaClO

8 0

3 years ago

Explain 2 reasons why SI is easier to use than the English System

11111nata11111 [884]

There's only one unit for each type of measurement in the SI. For example:

1)Regarding distance, in the SI there are meters and that's it; everything else is just a power of ten. On the other hand, the US Customary system has mils, inches, feet, yards, rods, furlongs, miles, nautical miles and leagues, with strange conversion factors between them all.

2)For volume, in the SI, there are liters and that's it; everything else is just a power of ten. On the other hand, the US Customary system has drams, teaspoons, tablespoons, ounces, gills, cups, pints, quarts, gallons, pecks, bushels, drums, beer barrels, liquid barrels, whiskey/kerosene barrels, oil barrels, cubic inches, cubic feet, cubic yards and I don't know of anyone who can remember the conversion factors for all those units! Oh--don't forget--a dry pint, quart, gallon or barrel is not the same thing as a fluid pint, quart, gallon or barrel, respectively.

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3 years ago

Help please ASAP just with number 7

alexdok [17]

Answer:

He is percieved in a warm climate.

Explanation:

The frog doesn't feel too cold or too hot. He is just right.

5 0

3 years ago

What mass of CaCl2 (in g ) should the chemist use?

solmaris [256]

The mass of the solute required is 250.25 g.

<h3>What is the mass of the solute?</h3>

We know that the number of moles of the solute can be used to obtain the mass of the solute that is required. We can now try to find the mass of the solute that is required.

Concentration of the solution = 0.350M

Volume of the solution = 6.5 L

Number of moles of the solute = 0.350M * 6.5 L

= 2.275 moles

We now have the mass of the solute as;

2.275 moles * 110 g/mol

= 250.25 g

Th measured mass of the solute that we would have to use is 250.25 g.

Learn more about solute:brainly.com/question/7932885

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Missing parts;

A chemist wants to make 6.5 L of a .350M CaCl2 solution. What mass of CaCl2(in g) should the chemist use?

3 0

1 year ago