Other Chemistry Answers

Liquid octane CH

3

CH

2

6

CH

3

 will react with gaseous oxygen O

2

 to produce gaseous carbon dioxide CO

2

 and gaseous water H

2

O

. Suppose 1.14 g of octane is mixed with 7.1 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to 3

significant digits. 

how you praise a relation of two moles naoh in 50 ml

250. 0 mL of 1.00 M NaOH solution has a density of 1.90 g/mL. Calculate the concentration of this solution in molality.

An ideal solution contains 92. 1 g of glycerin, C3H5(OH)3, and 184.4 g of ethanol, C2H5OH, at 40 oC. The vapor pressure of pure ethanol is 0.178 atm at 40 oC. What is the molality of the solution? What is the vapor pressure of a solution?

Two moles of aluminum was heated from 45 oC to 93 oC. Calculate the amount of heat absorbed by aluminum. Specific heat of Al= 0.90 J/g-K

50% pure 1 g CaCO3 is dissolved in 25 ml H2SO4 solution. A further 30 ml of 0.5 mol NaOH is required for complete dissolution of the mixture. So what was the concentration of H2SO4?

A student boils 9.43 grams of an unknown substance into vapor. If completely vaporizing the substance required 8,720 joules of energy, what is the heat of vaporization?

(100)Interpret this statement: “Carbon dioxide is an energy-poor molecule, but glucose is an energy-rich molecule.”

Calculate the amount in moles of LiOH in the lithium hydroxide formed

Diborane liberates hydrogen gas with X

and forms addition compound with Y.

Then X and Y

M(oH)3 equals 78 g/mol what the atomic mass

If there are 2.50 moles of an unknown atomic element and the mass of this amount is 60.78 g, the unknown element must be:

A - Sodium

B - Magnesium

C - Aluminium

D - Silicon

The mass of a sample of 0.124 mol of tin(II) fluoride is _____g. Remember to provide your answer using significant digits.

In 50g of ammonia, there are _____ mol. Remember to use significant digits for your answer

The molar mass of iron (III) sulfate is ______ g/mol.

The expected products after combining sodium iodide with lead(II) nitrate would likely be:

A - NaNO3(aq) + PbI(s)

B - Na(NO3)2(aq) + PbI2(s)

C - Na(NO3)2(aq) + PbI(s)

D - NaNO3(aq) + PbI2(s)

Convert 540000000 to scientific notation in the form of a.b X 10c. Enter the digits a, b, and c in this order for your 3-digit numerical answer.

When performing the calculation below, the final answer would be rounded to 10, according to the rounding and significant digit rules.

   (4.36 X 2.2) + 0.8580

True or false?