What is the reaction of jack's tribe to ralph's talk of rescue?

The fact that HBO2, a reactive compound, was produced rather than the relatively inert B2O3 was a factor in the discontinuation

Reil [10]

Answer:

1027.62 g

Explanation:

For $B_2H_6$ :-

Mass of $B_2H_6$ = 296.1 g

Molar mass of $B_2H_6$ = 27.66 g/mol

The formula for the calculation of moles is shown below:

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

Thus,

$Moles= \frac{296.1\ g}{27.66\ g/mol}$

$Moles\ of\ B_2H_6= 10.705\ mol$

From the balanced reaction:-

$B_2H_6(g) + 3 O2_{(l)}\rightarrow 2 HBO_2_{(g)}+ 2 H_2O_{(l)}$

1 mole of $B_2H_6$ react with 3 moles of oxygen

Thus,

10.705 mole of $B_2H_6$ react with 3*10.705 moles of oxygen

Moles of oxygen = 32.115 moles

Molar mass of oxygen gas = 31.998 g/mol

Mass = Moles * Molar mass = 32.115 * 31.998 g = 1027.62 g

8 0

3 years ago

Why did Dalton think it was important to use his system of symbols for the chemical elements?

77julia77 [94]

The answer is : A good luck :)

4 0

4 years ago

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Given the speed of light as 3.0 × 108 m/s, calculate the wavelength of the electromagnetic

kupik [55]

Answer:

The answer is

$\huge 4.054 \times {10}^{ - 5} \: m \\$

Explanation:

The wavelength of the electromagnetic

radiation can be found by using the formula

$\lambda = \frac{c}{f} \\$

f is the frequency

c is the speed of light

From the question we have

$\lambda = \frac{3.0 \times {10}^{8} }{7.4 \times {10}^{12} } \\$

We have the final answer as

$4.054 \times {10}^{ - 5} \: m$

Hope this helps you

4 0

3 years ago

.................. are microorganism used to improve soil fertility. plz ams it correct

slavikrds [6]

Answer:

Some bacteria like rhizobium and blue green algae are able to fix nitrogen gas from the atmosphere to enrich the soil with nitrogen compounds and increase its fertility. The nitrogen-fixing bacteria and blue green algae are called biological nitrogen fixers.

5 0

3 years ago

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A chemical reaction with an initial quantity of 1.35 moles of gas is performed in a 4.50-L flask at 24.7°C and under 1.07 atm of

nexus9112 [7]

Answer:

0.488 mol

Explanation:

By the ideal gas law:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the gas constant (0.082 atm.L/mol.K), and T is the temperature in K. Thus, after the reaction:

P = 2.92 atm

V = 4.50 L

T = 55.2°C + 273 = 328.2 K

PV = nRT

n = PV/RT

n = (2.92*4.50)/(0.082*328.2)

n = 0.488 mol

8 0

3 years ago