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4 years ago

complete the following equation that represents the complete combustion of hexane in a car engine.C6H14 + O2

Physics

1 answer:

mina [271]4 years ago

5 0

The balanced combustion reaction for butane is;

2C4H10 + 13O2 → 8CO2 + 10H2O

Molar mass of water = 18.02 g/mol

Molar mass of oxygen = 32 g/mol

2.46g H2O(1 mol H2O/18.02g)(13 mol O2/10 mol H2O)(32g O2/1 mol O2) = 5.68g O2

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Select all the answers that apply. Scientists think past changes in climate have been caused by _____.

Natasha2012 [34]

<span>C. plate tectonics....</span>

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4 years ago

Which area of Earth is most similar to the sun’s convection zone?

Pavlova-9 [17]

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3 years ago

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Calculate the kinetic energy in joules of a 10g bullet moving at 300 m/s

mina [271]

Given: Mass m= 10 g convert to Kg m = 0.01 Kg Velocity V = 300 m/s

Required: Kinetic energy = K.E = 1/2 mV²

K.E = 1/2 (0.01 Kg)(300 m/s)²

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4 years ago

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Calculate the propellant mass required to launch a 2000 kg spacecraft from a 180 km circular orbit on a Hohmann transfer traject

Finger [1]

Answer:

t = 12,105.96 sec

Explanation:

Given data:

weight of spacecraft is 2000 kg

circular orbit distance to saturn = 180 km

specific impulse = 300 sec

saturn orbit around the sun R_2 = 1.43 *10^9 km

earth orbit around the sun R_1= 149.6 * 10^ 6 km

time required for the mission is given as t

$t = \frac{2\pi}{\sqrt{\mu_sun}} [\frac{1}{2}(R_1 + R_2)]^{3/2}$

where

$\mu_{sun}$ is gravitational parameter of sun = 1.32712 x 10^20 m^3 s^2. $t = \frac{2\pi}{\sqrt{ 1.32712 x 10^{20}}} [\frac{1}{2}(149.6 * 10^ 6 +1.43 *10^9 )]^{3/2}$

t = 12,105.96 sec

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3 years ago

Which statement describes the molecules and a reaction once it reaches equilibrium

shepuryov [24]

Answer:

A: They maintain stable concentrations.

Explanation:

Hopefully this helps!

4 0

3 years ago