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bezimeni [28]
3 years ago
15

Which statement best describes the properties of ionic compounds? They are brittle, solid at room temperature, and have a high m

elting point. They are always composed of an equal proportion of cations to anions. They mostly have low melting and boiling points. They are good conductors of heat and electricity and are ductile and malleable.
Chemistry
2 answers:
NARA [144]3 years ago
6 0
<span>Most properties of ionic compounds are based on the strength of the ionic bonds. Ionic bonds are the strongest bonds between atoms (compared with covalent bonds), so that implies that the ionic compounds will be solid and form crystals at room temperature, will have high melting and boiling points, will be hard, rigid and brittle, will dissolve into ions (cations and anions) in polar solvents, and their solutions will conduct electricity.</span>
Cloud [144]3 years ago
3 0
They are brittle, solid at room temperature, and have s high melting point
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When co2 levels are high the kidneys reabsorb this to compensate?
Crazy boy [7]
Elevated carbon dioxide mean too much acid in the blood.  <span>Increase acid excretion (intercalated cells secrete H+ into tubules) and decrease bicarbonate excretion. They also make new bicarbonate to add to the plasma.</span>
7 0
3 years ago
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If 10 grams of potassium chlorate decompose to form potassium chloride and oxygen gas inside a 500 mL container at a temperature
Gekata [30.6K]

Answer:

10 atm

Explanation:

There's a lot to do here, but lets take it one step at a time. First, let's write a balanced equation for the decomposition of potassium chlorate into potassium chloride and oxgyen gas.

2 KClO3 → 2 KCl + 3 O2

Now let's find the moles of the KClO3 (molar mass 122.55 g/mol) that we have take 10 g/122.55 g/mol, grams will cancel and we are left with 0.0816 moles. lets divide that by two since we have a two in front of the KClO3 in the equation, and then multiply that number by 5 since it's the total moles of products, in summary, multiply by 5/2 to get 0.204 moles.

Now that we know the moles of our products, let's plug some stuff into the ideal gas law PV = nRT. We are looking for P so let's solve for that. P = (nRT)/V, now let's plug in our values. Make sure V is converted to liters so 0.5 L. And convert celcius to kelvin by adding 273

P = ((0.204 moles)(318 K)(0.08206 L atm mol^-1 K^-1))/0.5 L

A lot of units cancel, and we get about 10.65 atm, if you don't want the answer in atm, you can find a conversion equation. But let's round to sig figs for now, which will bring us to 10 atm.

3 0
1 year ago
1. How many ATOMS of boron are present in 2.20 moles of boron trifluoride ? atoms of boron.
maks197457 [2]

Answer:

1. How many ATOMS of boron are present in 2.20 moles of boron trifluoride? atoms of boron.

2. How many MOLES of fluorine are present in  of boron trifluoride? moles of fluorine.​

Explanation:

The molecular formula of boron trifluoride is BF_3.

So, one mole of boron trifluoride has one mole of boron atoms.

1. The number of boron atoms in 2.20 moles of boron trifluoride is 2.20 moles.

The number of atoms in 2.20 moles of boron is:

One mole of boron has ---- 6.023x10^2^3 atoms.

Then, 2.20 moles of boron has

-=2.20 mol. x 6.023 x 10^2^3 atoms /1 mol\\=13.25x10^2^3 atoms

2. Calculate the number of moles of BF3 in 5.35*1022 molecules.

(5.35x10^2^2 molecules/6.023x10^2^3)x 1mol\\=0.0888mol

One mole of boron trifluoride has three moles of fluorine atoms.

Hence, 0.0888moles of BF3 has 3x0.0888mol of fluorine atoms.

=0.266mol of fluorine atoms.

5 0
2 years ago
23. The cell has a
andrew11 [14]
Then that would be 100% all together I believe
5 0
1 year ago
NEED HELP QUICK!!!!!!!!!!!!!!
denis23 [38]
The compounds that are produced upon this combustion reaction would be Carbon Dioxide and water.

CO2 = Carbon and Oxygen
H2O = Hydrogen and Oxygen.

The exact molecular amounts or moles can be determined by balancing this combustion reaction.
3 0
3 years ago
Read 2 more answers
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