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3 years ago

Based on the types of elements in the compound are there ionic or covalent? A. KCI B.NO2

Chemistry

1 answer:

Alex3 years ago

7 0

Explanation:

iehebrkee keen enensjsb sh sry need to get the points?

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A light microscope that has two or more lenses is called a ____________________ (compound, simple) microscope.

Oduvanchick [21]

That is called COMPOUND microscope....

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3 years ago

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Enter a balanced equation for the dissolution of caco3.

Tatiana [17]

Answer:

CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)

Explanation:

Dissolution reactions are reactions that occur when a solute either in gaseous, liquid, or solid form dissolves in a solvent such as water to form a solution.
In this case we are given Calcium carbonate (CaCO3) which undergoes dissolution according to the equation;
CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)
Then the bicarbonate ion combines with two protons from water to form a weak acid H2CO3. The weak acid is then broken down to form CO2 and H2O since its unstable.

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3 years ago

If 35.8 grams of LiCl are dissolved in 184 grams of water, what is the concentration of the solution in percent by mass?

True [87]

35.8/184=.194565, or 19.4565%

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3 years ago

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HELP WITH THIS ASAP PLEASE!!! What is the mass in grams of 8.42 x 10^22 atoms of sulfur?

V125BC [204]

Answer:

Answer:

see explanation and punch in the numbers yourself ( will be better for your test)

Explanation:

If you are given atoms you need to divide by Avogadro's number 6.022x10^23

then you will have moles of sulfur-- once you have moles multiply by the molar mass of sulfur to go from moles to grams

mm of sulfur is 32 g/mol

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3 years ago

________ are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds

olga_2 [115]

Hydrogen bonds are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules.

The hydrogen bond is weak bond.

The hydrogen bond is electrostatic force of attraction between hydrogen atom and more electronegative atoms or group ( like Florine , oxygen or nitrogen) which is contently bonded.
The hydrogen bond is occur in polar , contently bond atoms in different molecules.
Example is H-O-H or $NH_{3}$
The positively charged hydrogen side of one water molecule is bond with negatively charged oxygen side of another molecule.

learn about Hydrogen bond

brainly.com/question/10904296

#SPJ4

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2 years ago