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Greeley [361]
2 years ago
6

Which of the compounds, li3p, ph3, c2h6, ibr3, are ionic compounds?

Chemistry
2 answers:
boyakko [2]2 years ago
8 0

<span>Li3P=ionic </span>
<span>PH3=Covalent </span>
<span>C2H6=Covalent </span>
<span>IBr=Covalent</span>
REY [17]2 years ago
7 0

Answer:

Juts Li3P

Explanation:

An ionic compound is the one that is formed by a metal and a nonmetal, in that way when you join lithium (a metal) with phosphorous (a non metal), you are forming a ionic compound. The other three answers are just the join of two non metals, in that case, the three of them are considered like covalent compounds.

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4.000 g of Compound X with molecular formula C4H6 are burned in a constant-pressure calorimeter containing 40.00 kg of water at
stiks02 [169]

Answer:

2407 kJ/mol

Explanation:

Given:

Mass of water  = 40.00 kg

\Delta T  = 1.065 °C

Net Heat transfer during heating:

Q=m_{water}\times C_{water}\times \Delta T

Specific heat of water = 4.187 kJ/kg°C  

Q=40.00\times 4.187\times 1.065\ kJ

Q = 178.3662 kJ

Heat gained by water is heat lost by the compound. Thus, heat lost = 178.3662 kJ

Also,

Mass = 4.000 g

Molar mass of C_4H_6=4\times 12+6\times 1\ g/mol=54\ g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{4.000\ g}{54\ g/mol}

Moles= 0.0741\ mol

<u>Standard heat of formation = 178.3662 kJ / 0.0741 mol=2407 kJ/mol (In correct significant digits)</u>

5 0
3 years ago
I have seriously no clue! Please help!
saul85 [17]

The elements are identified by the number of protons of the atom, which is its atomic number.

In this case the number of protons 39 (atomic number 39) permit you to identify the element as gallium.

Now, to identify the isotope you tell the name of the element and add the mass number.

The mass number is the sum of the protons and the neutrons.

In this case, the number of neutrons is the original 39 plus the 2 added suddenly, i.e. 39 + 2 = 41, so the mass number is 31 + 41 = 72

Therefore, the isotope is gallium - 72.

Answer: isotope gallium - 72

4 0
2 years ago
Read 2 more answers
.
konstantin123 [22]

Answer:

the temperature of the star

Explanation:

The color of stars usually indicates the temperature of the star.

A star that is relatively cold usually shows a typical red color.

The hottest stars have a blue color.  

  • These star colors have been used by astronomers to determine their temperature.
  • A broad spectrum between blue, the hottest color,  and red the coldest is used.
  • Class O stars are usually the blue colored ones
  • Class M is the coldest with red color

8 0
2 years ago
1. (04.01 LC)
charle [14.2K]

Answer:

I think is Probably B

4 0
2 years ago
Read 2 more answers
I’ll give the brainliest
Readme [11.4K]

Answer:

Water gradually degrades them until the metal parts rust and the other materials deteriorate.

Explanation:

8 0
3 years ago
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