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Mashcka [7]
4 years ago
6

How many moles is 15.0 grams iron (II) nitrate?

Chemistry
1 answer:
Natalija [7]4 years ago
6 0

Answer:0.00556

Explanation:

You might be interested in
Why do ashes from fire have a much lower mass than the wood that was burned
tatyana61 [14]

Answer:

because when you burn some wood you don't just get ash, you also get energies like thermal energy(heat), light and also some gaseous compound are produced (like CO2, SO2 etc) for the combustion reaction(a reaction where something is burnt in presence of O2). So the energy reserved in the wood are transformed into heat, light, other compounds and some turn into ash.

8 0
3 years ago
A rectangular object measures 3 cm x 2 cm x 1 cm and it has a mass of 4 g. What is the density of
zhuklara [117]

Answer:

Density of the rectangular object = 4 / 6 = 0.67g/cm³

Explanation:

First find the volume of the rectangular object.

Volume of the rectangular object = 3 x 2 x 1 = 6cm³.

Density of an object = mass of the object / volume of the object

Therefore,

Density of the rectangular object = 4 / 6 = 0.67g/cm³

8 0
3 years ago
You drop an ice cube into acupof hot liquid andyou drop another ice cube into apitcherof hot liquid that is the same temperature
sukhopar [10]

Given what we know, we can confirm that in the situation given in this question, the ice cube placed into the pitcher of water will melt quicker than the cube in the cup of water.

<h3>Why does the cube in the pitcher melt quicker?</h3>

In order to melt, the ice must receive heat from the water around it.

The hotter the water is, the more heat the ice can receive.

Given that the cup has a low amount of water, it will quickly cool down, slowing the melting process of the ice.

The pitcher, however, has more molecules of water that are able to give heat to the ice, meaning that the ice can melt faster.

Therefore, given that the pitcher contains more water, it will be able to lose more heat before to the ice cube than the cup of water and thus melt the cube faster.

To learn more about heat dissipation visit:

brainly.com/question/4582322?referrer=searchResults

5 0
2 years ago
You do an experiment in which you need 1.5 moles of tyrosine (C9H11 NO3). How
Rufina [12.5K]

Answer:

272 g

Explanation:

To know the amount of tyrosine that we must weigh, we must first calculate the relative molecular mass of tyrosine. This can be achieved by adding the individual molar Masses of the different elements present in the tyrosine.

Relative molecular mass of tyrosine (C9H11 NO3) = (12 x 9) + (11 x1) + 14 + (3x 16)

= 108 + 11 + 14 + 48

= 181

Next, we solve for the mass of tyrosine that will give 1.5moles of tyrosine. This can be done by:

Mass conc. = number of mole x relative molecular mass

Mass conc. = 1.5 x 181 = 271.5 = 272g

Therefore, to obtain 1.5 moles of tyrosine (C9H11 NO3), we must weigh 272g of tyrosine.

5 0
3 years ago
During roasting is sulphur dioxide always formed
irakobra [83]

Answer:

In roasting, air in large amounts, sometimes enriched with oxygen, is brought into contact with the sulfide mineral concentrate. This is done at elevated temperatures when oxygen combines with sulfur to form sulfur dioxide and with the metal to form oxides, sulfates and so on. ... Roasting is an exothermic reaction.

calcination as "heating to high temperatures in air or oxygen

Explanation:

6 0
3 years ago
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