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Novay_Z [31]
3 years ago
7

A sample of iron has the dimensions of 2 cm x 3 cm x 2 cm. If the mass of this

Chemistry
1 answer:
77julia77 [94]3 years ago
5 0

Answer: Volume iron = 2 x 3 x 2 => 12 cm³

Mass = 94 g

D = m / V

D = 94 / 12

D = 7.833 g/cm³

Explanation:

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Which action effectively increases the reactant concentration and increases
yanalaym [24]

Answer:

heating the reactant mix

Explanation:

Heat can result in to speed the reaction process.

hope it helps!

8 0
3 years ago
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15g of magnesium (II) oxide decomposes, find the number of oxygen particles produced at 100% yield.
erastova [34]

2.258625 *10²³ oxygen atoms will be produced.

<h3><u>Explanation:</u></h3>

Decomposition reaction is defined as the type of reaction where one single reactant breaks to produce more than one product only by means of heat or other external factor.

Formula of magnesium oxide = MgO.

The molecular mass of magnesium oxide = 24 +16= 40.

So in 40 grams of magnesium oxide, number of molecules is 6.023 * 10²³.

So in 15 grams of magnesium oxide,, number of molecules is 6.023 *1023 * 15/40 = 2.258625 *10²³.

From one molecule of magnesium oxide, one oxide atom will be produced.

So number of oxide atoms with 100% yeild = 2.258625 *10²³

6 0
3 years ago
5. A gas has a pressure of 1.26 atm and occupies a volume of 7.40 L. If the gas
marin [14]

Answer:

0.499atm

Explanation:

The formula is

P1/V1 = P2/V2

so:

1.26atm/7.40L = P2/2.93L

then:

(1.26atm/7.40L)*2.93L = P2

= 0.4988918911atm

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8 0
3 years ago
65. Which of the following heavy metal is not
creativ13 [48]
I believe it is ni . Hope this helps
3 0
3 years ago
Which type of bond is salt
tigry1 [53]

Answer:

An Ionic Bond

Explanation:

Salt compounds are formed by the "donating" of electrons.

8 0
3 years ago
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