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alexandr402 [8]
3 years ago
9

What does a smaller uncertainty in chemistry mean?

Chemistry
1 answer:
OlgaM077 [116]3 years ago
3 0
A smaller uncertainly in chemistry is an uncertain statement or example about chemistry . one reason is chemistry is important. 
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In which atmosphere layer do humans live most of their life
marysya [2.9K]
Troposphere, this is the layer of the atmosphere closest to the earths crust.
3 0
3 years ago
How many single covalent bonds could an element with the electron
Tcecarenko [31]

Answer:

1

Explanation:

I would say 1 because that configuration has 7 valence electrons.  The goal of the atom is to gain a full octet so it just needs to gain 1 more electron to get the full octet.  To get the one electron to fill the valence shell it would only need to have 1 covalent bond.

I hope this helps.  Let me know if anything is unclear.

5 0
3 years ago
Calculate the volume of 1.00 x 10^-2M KOH solution containing 3.00 x 10^-1 mol of solute?
ioda
Volume = ?

Molarity (M) = 1.00 x 10⁻² M

moles (n) = 3.00 x 10⁻¹ mol

V = n / M

V = 3.00 x 10⁻¹  / 1.00 x 10⁻²

V = 30 L
7 0
4 years ago
Why is the concentration of 1.34gvCuCl2 in a volumetric flask with approx. 100mL of water has a concentration of 0.050M?
jarptica [38.1K]
<h3>Answer:</h3>

Concentration will be 0.1 M and not 0.050M

<h3>Explanation:</h3>

This explains why the molarity is not 0.050 M but 0.1 M

Molarity is the concentration of a solution in moles per liter.

Therefore,

Molarity = moles ÷ Volume

In this case,

We have 1.34 g of CuCl₂ and a volume of 100 mL

To get the molarity we need to find the number of moles in 1.34 CuCl₂

Number of moles = Mass÷ molar mass

Molar mass of CuCl₂ = 134.45 g/mol

Therefore,

Moles of CuCl₂ = 1.34 g ÷ 134.45 g/mol

                         = 0.009965 moles

                         = 0.01 moles

Then we can calculate the molarity;

Molarity = Number of moles ÷ Volume

Volume of the solution is 100 mL or 0.1 L

Molarity = 0.01 moles ÷ 0.1 L

            = 0.1 M

Therefore, the concentration of 1.34 g CuCl₂ in a volume of 100 mL is 0.1 M and not 0.050M.

8 0
3 years ago
The weather in Europe was unusually warm during the summer of 1995. The TV news reported temperatures as high as 45 degree centi
Tpy6a [65]

Answer : The temperature on the Fahrenheit scale was, 113^oF

Explanation :

The conversion used for the temperature from degree centigrade to Fahrenheit is:

^oF=(^oC\times \frac{9}{5})+32

where,

^oF = temperature in Fahrenheit

^oC = temperature in centigrade

As we are given the temperature in degree centigrade is, 45

Now we have to determine the temperature in Fahrenheit.

^oF=(45^oC\times \frac{9}{5})+32

^oF=113

Therefore, the temperature on the Fahrenheit scale was, 113^oF

5 0
4 years ago
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