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Pavel [41]
3 years ago
12

What is the melting point of gallium?

Chemistry
2 answers:
Alenkinab [10]3 years ago
8 0
The melting point of gallium is 85.59°F (29.77°C).
EleoNora [17]3 years ago
3 0

Answer:29.76  

Explanation:

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Calculate the mass (g) of each product formed when 43.82 g of diborane (B₂H₆)
guajiro [1.7K]

Stoichiometry:

The area of study in chemistry concerned with the quantities of chemical species produced or required for a given chemical reaction is stoichiometry. The stoichiometric coefficients of the balanced chemical equation are often used to relate the amounts of substances to one another.

Evaluation :

The balanced chemical equation for the reaction is given as follows:

B_{2} H_{6} + 6H_{2} O  → 2H_{3} BO_{3}  + 3H_{2}

By using the molar mass of the given chemical species, along with the stoichiometric coefficients of the balanced chemical equation, we determine the mass of each product as:

43.82 g B_{2} H_{6} ×\frac{1 Mol B_{2} H_{6} }{27.66 g} ×\frac{3molH_{2} }{1 molB_{2}H_{6}  } ×\frac{2g}{1 mol H_{2} } = 9.51 g H_{2}

43.82 g B_{2} H_{6} × \frac{1 mol B_{2} H_{6} }{27.66 g}    ×   \frac{1 mol H_{3}BO_{3}  }{1 mol B_{2} H_{6} } × \frac{61.8g}{1 mol H_{3} BO_{3} }  = 196 gH_{3} BO_{3}

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6 0
2 years ago
Which of these chemical formulas represents both an element and a molecule?
inna [77]
O2.

Because it is only made up of one type of element it is an element. Howevern there is more than one oxygen atom because oxygen cannot exist as a single atom, therefore making it a molecule as well.
8 0
2 years ago
Read 2 more answers
A balloon inflated in a room at 24 degree celsius has a volume of 4 L. The balloon is then heated to a temperature of 58 degree
WITCHER [35]

Answer: The new volume of the balloon will be 4.45L

Explanation: We will solve this question through the concept of Charles's law. The law states that the volume of a gas is directly proportional to the absolute temperature, assuming the quantity of gas and pressure remain constant.

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2 years ago
423.3 mL of gas is at 49.2 C. It is compressed to a volume of 79 mL. What is the new temperture. Express your answer in Kelvin.
zzz [600]

Answer: 60.1K

Explanation:

Initial volume of gas V1 = 423.3mL

Initial temperature T1 = 49.2°C

Convert temperature in Celsius to Kelvin

( 49.2°C + 273 = 322.2K)

Final temperature T2 = ?

Final volume V2 = 79mL

According to Charle's law, the volume of a fixed mass of a gas is directly proportional to the temperature.

Mathematically, Charles' Law is expressed as: V1/T1 = V2/T2

423.3mL/322.2 = 79mL/T2

To get the value of T2, cross multiply

423.3mL x T2 = 322.2K x 79mL

423.3mL x T2 = 25453.8

T2 = (25453.8/423.3mL)

T2 = 60.1K

Thus, the new temperature of the gas is 60.1K

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3 years ago
2.7g of aluminum metal is placed into solution hydrochloric acid to form aluminum chloride and hydrogen gas.
Sidana [21]

Explanation:

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