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dybincka [34]
3 years ago
10

Abbreviated electron configuration for tellurium

Chemistry
1 answer:
Zinaida [17]3 years ago
4 0

Answer:

The ground state electron configuration of ground state gaseous neutral tellurium is [Kr]. 4d10.

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Example for next four problems:
Lena [83]

Answer:

Compound formula : HCl

Element H

# atoms:1

Elements Cl

#atoms : 1

gram formula weight (g) = 36.46

4 0
3 years ago
What is the percent by mass of C in benzene (C6H6)? The molecular weight of carbon is 12.0107 g/mol and of hydrogen 1.00794 g/mo
pshichka [43]

Answer:

92.26% of C

Explanation:

To solve this problem we must assume we have 1 mole of benzene. The mole contains 6 moles of C and 6 moles of H. We have to convert these moles to grams in order to find the total mass and mass percent will be:

Mass atom / Total mass * 100

<em>Mass C: </em>6mol C * (12.0107g / mol) = 72.0642g

<em>Mass H: </em>6mol H * (1.00794g / mol) = 6.04764g

<em>total mass: </em>72.0642g + 6.04764g = 78.11184g

Mass percent of C will be:

72.0642g C / 78.11184g* 100

<h3>92.26% of C</h3>

3 0
3 years ago
How many moles are in 105.7 grams of aluminum
Inessa [10]

Answer:

3.918 mol Al

Explanation:

To convert between moles and grams, you have to use the molar mass of the substance. The molar mass of aluminum is 26.98 g/mol. You use this as the unit converter.

105.7gAl *\frac{1molAl}{26.98gAl} =3.91771683molAl  

Round the number to the lowest number of significant figures; 3.918 mol Al

3 0
4 years ago
A tank of gas has partial pressures of nitrogen and oxygen equal to 1.61 × 104 kPa and 4.34 × 103 kPa, respectively. What is the
fiasKO [112]
Did you get the answer??
8 0
4 years ago
Read 2 more answers
Gold can be separated from sand by panning or by a sluice-box. In panning, water is mixed with the sand and the resulting slurry
ArbitrLikvidat [17]

Answer:

<u><em>Decantation</em></u><em> by means of difference in relative densities.</em>

Explanation:

The specific gravity (relative density) of the gold to the soil/sand is the physical property exploited in panning gold. The particles with lower density would float whilst the heavier gold sinks lower to the bottom of the pan by gravity and is decanted off.

I hope this explanation is easy to comprehend.

6 0
3 years ago
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