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jeyben [28]
3 years ago
5

Why is iron described as an element

Chemistry
1 answer:
Harrizon [31]3 years ago
5 0
Iron is a type of element because iron is metal and metal is also a mineral
Hoped this helped
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Why is water typically used as the heat-absorbing liquid in calorimetry?
jenyasd209 [6]
It has a high specific heat. Meaning it takes a lot of heat for it to raise up 1 degree
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3 years ago
Glass has a specific heat of 0.16 calories/gram°C.
Sloan [31]
Calories heat added = Mass of glass times temp. increase times specific heat of glass

calories (small calories) = l.0 g x 20 degrees x .16 calories/gm/degree C = 3.2 calories
7 0
3 years ago
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Calculate the number of moles in 7g of nitrogen gas​
Andru [333]

Answer:

<h3>0.2498molN_{2}</h3>

Explanation:

7gN2 x \frac{1 mol}{2(14.01) g}

=0.2498mol N2

Nitrogen gas has the formula N_{2} so therefore that means you would have to multiply the mass in the molar by 2. To solve for the number of moles you need to cancel out the grams, you do this by using the molar mass of nitrgoen gas. You get the value on in the denominator from the periodic table (atomic mass of element). The grams will cancel out, leaving you with the number of moles when you divide 7/2(14.01).

5 0
3 years ago
A piece of metal with a mass of 147g and a volume of 21ml. Calculate the density of the metal.
kipiarov [429]

Answer:

density of a piece of metal = 7 gr/ml

Explanation:

See the file please

3 0
3 years ago
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In an experiment, the same mass of magnesium metal reacted with the same amount of two different acids. the acid used in reactio
denpristay [2]

The mole ratio of the reaction shows that equal volumes of hydrogen gas will be produced by the two reactions.

<h3>What is the mole ratio of a reaction?</h3>

The mole ratio of a reaction is the ratio in which the reactants and products of a given reaction occur for the reaction to proceed to completion.

The mole ratio of a reaction is also known as the stoichiometry of the reaction.

The equation of the two reactions are given below:

Mg + 2HCl \rightarrow MgCl_2 + H_2

Mg + 2CH_3COOH \rightarrow (CH_3COO)_2Mg + H_2 \\

From the equation of the reaction reaction, an equal volume of hydrogen gas will be produced by the two reactions.

Therefore, the mole ratio of the reaction shows that equal volumes of hydrogen gas will be produced by the two reactions.

Learn more about mole ratio at: brainly.com/question/19099163

#SPJ1

6 0
2 years ago
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