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KengaRu [80]
3 years ago
15

Which compound has both ionic and covalent bonding? *

Chemistry
1 answer:
AlekseyPX3 years ago
7 0

Answer:

Calcium carbonate

Explanation:

Ionic compounds that tend to have one or more polyatomic ions are the ones that tend to exhibit both ionic and covalent bonding. The only one that meets this is calcium carbonate.

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Solid aluminum hydroxide reacts with a solution of hydrobromic acid. write a balanced molecular equation and a balanced net ioni
Stolb23 [73]
<span>To find the balanced molecular equation, we need to find the symbols for each element and their charges and then balanced the equation. This comes out to: Al(OH)3(aq) + 3HBR(aq) ---> AlBr3(aq) + 3H2O(l) The net ionic equation is adding the charges and separating them into basic components. Al3+ + 3OH- + 3H+ + 3BR- --> Al3+ + 3Br + H3O+ We can cancel out the aluminum and bromine to get: 3OH-(aq) + 3H+(aq) --> 3H2O(l)</span>
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3 years ago
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Which characteristic is true of sexual reproduction but not of asexual reproduction?
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Answer:

Sexual Reproduction involves two different parties

Explanation:

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A 255 mL round--bonom flask is weighed and found to have a mass of 114.85 g. A few millimeters of an easily vaporized liquid are
Alex17521 [72]

Answer: Option (d) is the correct answer.

Explanation:

According to the given situation, mass of compound will be calculated as follows.

Mass of compound = mass of flask and condensed vapor - mass of flask

                                 = 115.23 - 114.85

                                = 0.38 g

Volume (V) = 255 mL = 255 \times 10^{-6} m^{3}        (as 1 ml = 10^{-6} m^{3})

Pressure (P) = 101325 Pa

Temperature = 100^{o}C = (100 + 273) K = 373 K

Now, according to the ideal gas equation, PV = nRT

and, moles of compound n = \frac{PV}{RT}

                     = \frac{101325 \times 255 \times 10^{-6}}{8.314 \times 373}

                     = 0.008332 mol

As, molar mass of compound = \frac{mass}{\text{no. of moles}}

                                                  = \frac{0.38}{0.008332}

                                                  = 46 g/mol

Therefore, the compound is C_{2}H_{5}OH (molar mass = 12 x 2 + 5 x 1 + 16 + 1 = 46 g/mol).

Thus, we can conclude that out of the given options the liquid could be C_{2}H_{5}OH.  

4 0
3 years ago
1.00 pint of milk has a volume of how many milliliters
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I searched it up on Google and I got 473.176    Hope this helps.

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4 years ago
Temperature measures the average kinetic energy of a substance's molecules.
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True

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