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emmasim [6.3K]
3 years ago
7

Which chemical element has the shortest name?

Chemistry
2 answers:
larisa86 [58]3 years ago
5 0
Tin would be the right answer
frutty [35]3 years ago
3 0

Answer:

Tin

Explanation:

Tin is the chemical element which has the shortest name. It is a metallic element with the chemical symbol Sn which comes from the latin word stannum.

hope this helps!! :) :) :) (please give me brainliest!!)

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Mercury expands when it is heated. This process is called thermal expansion.
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6) A student measures out 96.21 g of sulfur for an experiment. How many moles of Sulfur are in this
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32g of Sulfur is one mole.

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5 0
3 years ago
Read 2 more answers
Problem 4
Hunter-Best [27]
<h3>Answer:</h3>

1.93 g

<h3>Explanation:</h3>

<u>We are given;</u>

The chemical equation;

2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(l) ΔH = -3120 kJ​

We are required to calculate the mass of ethane that would produce 100 kJ of heat.

  • From the equation given;
  • 2 moles of ethane burns to produce 3120 Kilo joules of heat
  • Therefore;

Number of moles that will produce 100 kJ will be;

= (2 × 100 kJ) ÷ 3120 kJ)

= 0.0641 moles

  • But, molar mass of ethane is 30.07 g/mol

Therefore;

Mass of ethane = 0.0641 moles × 30.07 g/mol

                          = 1.927 g

                          = 1.93 g

Thus, the mass of ethane that would produce 100 kJ of heat is 1.93 g

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3 years ago
Which of these is an indication that a chemical reaction has occurred?
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Formation Of A Gas.

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What experimental observations indicate a chemical change is taking place?
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A chemical change is characterized of the formation of new substances or a chemical reaction. There are a number of observations that we can see if this type of change happens. One would be the formation of gas bubbles, this indicates that one of the products is a gas. Another observation would be a formation of a precipitate in the solution, it would indicate that the new solid formed is not soluble in the solution. A permanent color change in the solution would also indicate a chemical change because it may be that the new substance that is formed has its own distinct color when in solution. 
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