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Luda [366]
4 years ago
15

List 3 examples of elements

Chemistry
2 answers:
Sever21 [200]4 years ago
7 0
Scandium, yttrium, and either lanthanum or lutetium.
KiRa [710]4 years ago
3 0
Aluminum, Carbon, Cobalt, Copper, Zinc, Tantalum
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Burning a candle is a combustion reaction that uses wax and oxygen to produce carbon dioxide, water, and energy. When you burn a
ss7ja [257]

Answer:

The wax

Explanation:

The limiting reactant is the reactant in short supply in a particular reaction. This reactant determines the extent of the reaction. Oxygen in the reaction is the one in excess. As we know that oxygen is free in the atmosphere and it is in excess supply.

After the wax finishes burning the reaction stops and no more production of carbon dioxide, water and energy but oxygen still continues to abound all around.

In order to determine the amount of carbon dioxide and water that would be produce, we simply use the amount of wax to relate with them.

4 0
3 years ago
The minimum collision energy between two molecules in order for them to react is called A activation energy. B dispersal energy
blondinia [14]

A: activation energy

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5 0
3 years ago
The modern atomic model is sometimes called the ________ or quantum mechanics model
Marat540 [252]
I believe the correct answer from the choices listed above is option D. The modern atomic model is sometimes called the electron cloud or quantum mechanics model. It <span>uses complex shapes of orbitals (sometimes called electron clouds), volumes of space in which there is likely to be an electron. </span> 
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4 0
3 years ago
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ASAAAP HURRRY PLS!!!
Setler79 [48]
C or D! When reduced coenzymes produce in the process of the cycle, are oxidized in the process of oxidative phosphorylation in electron transport chain! I hope this helps :(
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3 years ago
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H2 + CaCl2 --&gt; 2HCl + Ca How many grams of HCl are made when 2.93 g of<br><br> Ca are made?
Sholpan [36]

Answer:

H2 + CaCl2 -> 2HCl + Ca

How many grams of HCl are made when 2.93 g of

Ca are made?

Explanation:

From the given balanced chemical equation, it is clear that:

2mol. of HCl and 1mol. of Ca are produced.

2mol. of HCl weighs --- 73.0g

1mol. of Ca weighs --- 40.0g

Hence,

73.0g of HCl and 40.0g of Ca are produced.

When 2.93g of Ca is produced then, how many grams of HCl will be produced?

=> 2.93g Ca * \frac{73.0g HCl}{40.0g Ca} \\=5.35g HCl

Hence, 5.35g of HCl is formed.

4 0
3 years ago
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