How many grams of iron metal do you expect to be produced when 265 grams of an 84.5 percent by mass iron (II) nitrate solution react with excess aluminum metal? Show all of the work needed to solve this problem. 2Al (s) + 3Fe(NO3)2 (aq) yields 3Fe (s) + 2Al(NO3)3 (aq)

Answers

Answer 1

Answer: The balanced reaction is:

2Al (s) + 3Fe(NO3)2 (aq) = 3Fe (s) + 2Al(NO3)3 (aq)

We are given the amount of iron (II) nitrate solution with its purity. This will be the starting point of our calculation.

265 (.845) gram iron (II) nitrate (1 mol Fe(NO3)2 / 179.85 g Fe(NO3)2) ( 3 mol Fe / 3 mol Fe(NO3)2) (55.85 g Fe / 1 mol Fe) = 69.54 g Fe

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The ph of a 0.001 m hcl solution is closest to

a. 1
b. 7
c. 3
d. 10

Answers

C 3 is the answer because its right

A neutral atom of iron has a mass number of 56 and an atomic number of 26. How many protons, electrons and neutrons are in this atom? Explain how you determine each number.

Answers

so here its given ..
mass no. = 56
and atomic no. = 26

=> in an atom there is an equal number of electrons and protons ...(e=p)..
=> also atomic number is the number of the electrons or protons ..
=> so here we got the no. of electrons and protons ..which is 26 ..
=> to find the number of neutrons in an atom , subtract atomic number from the mass number..i.e, 56 - 26 = 30 ...

=> so there are 26 electrons , 26 protons and 30 neutrons in the given atom ...

Hope it helps !!!

Air pollution from automobiles and industrial power plants can be a source of chemical weathering due to the formation ofA. soil.
B. acid rain.
C. iron oxides.
D. calcium carbonate.

Answers

Also acid rain is created from the pollution of automobiles

Air pollution from automobiles and industrial power plants can be a source of chemical weathering due to the formation of C. iron oxides.

The density of lead is 11.4 g/cm3 at 20°C. A chemist has a metallic sample that is either pure lead or mostly lead. If the density of the sample is 11.0 g/cm3 at 20°C, then the sample most likely is _____. A. pure lead
b. lead mixed with heavier substances
c. lead mixed with lighter substances

Answers

Answer:

The correct answer is option c.

Explanation:

Density is defined as mass present in unit volume of the substance.

$Density=(Mass)/(Volume)$

Given that density of pure lead is more than that of the sample.

Density of lead = $11.4 g/cm^3$

Density of sample = $11.0 g/cm^3$

Since, we know that density is directly linked to mass of the substance. So with decrease in density of substance indicates that mass present in unit volume of the substance has also decreased.

The reason behind the less density of sample from lead was that, that it was made up lead and other light substance.

The sample is most likely lead with lighter substances in it. Pure lead would be closer to the pure lead density, and heavier substances would make the density more, not less.

Can Sodium be used to distinguish between cyclobutanol and butanoic acid

Answers

Answer:

$\boxed{\text{No}}$

Explanation:

Na reacts with all OH groups to produce hydrogen.

The reaction with cyclobutanol is shown below.

The reaction with butanoic acid is

$\rm CH_(3)CH_(2)CH_(2)COOH\xrightarrow{\text{Na}} CH_(3)CH_(2)CH_(2)COO^(-) + H_(2)$

Both compounds release bubbles of hydrogen, so you can't use sodium to distinguish between them.

Which type of bond is most likely to occur in the compound mgcl2?

Answers

An ionic bond because Magnesium is a metal and Chlorine is a nonmetal, because mg has a +2 charge and chlorine has a -1 charge then mg would hand out the electrons from its outermost orbital and hand them off to the 2 chlorine atoms.

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