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Alekssandra [29.7K]
3 years ago
7

Which important change in electronic devices, such as televisions and computers, is a result of the use of metalloids as semicon

ductors?
Electronic devices have become smaller.
Electronic devices are now more brittle.
Electronic devices now use more energy.
Electronic devices have become more expensive.
Chemistry
2 answers:
Dima020 [189]3 years ago
6 0

Answer:

Electronic devices have become smaller.

Explanation:

I just took the unit test in endg!

mylen [45]3 years ago
4 0

Answer:

electronic devices now use more energy

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A solution of AgNO3 contains 29.66 g of solute in 100.0 mL of solution. What is the molarity of the solution
Julli [10]

Answer:

1.7 M

Explanation:

Given data:

Mass of AgNO₃ = 29.66 g

Volume of solution = 100 mL (100/1000 = 0.1 L)

Molarity of solution = ?

Solution;

Number of moles of AgNO₃:

Number of moles = mass/ molar mass

Number of moles = 29.66 g/ 169.87 g/mol

Number of moles = 0.17 mol

Molarity of solution:

Molarity =  moles of solute / volume of solution in L

Molarity = 0.17 mol / 0.1 L

Molarity = 1.7 M

6 0
3 years ago
Recovery standards are a necessary tool for determining exactly how much of a particular analyte you are able to extract from a
Dafna11 [192]

Answer:

2.05mg Fe/ g sample

Explanation:

In all chemical extractions you lose analyte. Recovery standards are a way to know how many analyte you lose.

In the problem you recover 3.5mg Fe / 1.0101g sample: <em>3.465mg Fe / g sample. </em>As real concentration of the standard is 4.0 mg / g of sample the percent of recovery extraction is:

3.465 / 4×100 = <em>86,6%</em>

As the recovery of your sample was 1.7mg Fe / 0.9582g, the Iron present in your sample is:

1.7mg Fe / 0.9582g sample× (100/86.6) = <em>2.05mg Fe / g sample</em>

<em></em>

I hope it helps!

5 0
3 years ago
In reversible reaction when do forward reactions take place
kari74 [83]

Answer:

that is true. because reversible react is take place in forward and backward reaction

7 0
3 years ago
In a given chemical reaction the energy of products is great than the energy of the reactants which statement is true? (Hint wha
professor190 [17]
The true statement is (A) energy is absorbed during the reaction
For the products to have more energy, they must absorb it from the surrounding.
6 0
3 years ago
If a gas has a molecular mass of 44.0, the volume of 88.0 grams of the gas at STP would be ..
Montano1993 [528]
2) 11.2
All you have to do is multiply 44 by 22.4 L, which equals 985.6
Then you divide 985.6 by 88 to get your answer of 11.2 L
3 0
3 years ago
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