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tatuchka [14]
3 years ago
5

“Zn” is a... Chemicals Formula Symbol Name

Chemistry
1 answer:
Jobisdone [24]3 years ago
6 0

Explanation:

Zn is a symbol

its name is zinc

You might be interested in
A student titrates 25.00 ml. of tap water using 4.86 mL of 0.020 M EDTA. Calculate the hardness of the water
chubhunter [2.5K]

Answer:

0.0038 M

Explanation:

Hardness of the water is generally due to the presence of CaCO_3 in water.

At equivalence point

Moles of Ca^{2+} = Moles of EDTA

Considering

Molarity_{Ca^{2+}}\times Volume_{Ca^{2+}}=Molarity_{EDTA}\times Volume_{EDTA}

Given  that:

Molarity_{EDTA}=0.020\ M

Volume_{EDTA}=4.86\ mL

Volume_{Water\ or\ Ca^{2+}}=25.00\ mL

So,

Molarity_{Ca^{2+}}\times 25=0.020\times 4.86

Molarity_{Ca^{2+}}=0.0038\ M

6 0
3 years ago
Please help my class ends in a couple hours
marishachu [46]

Answer:

Homogeneous mixture

Solution

Liquid-gas

Hope this helps, hope its not late.

4 0
3 years ago
Read 2 more answers
What is the value of for this aqueous reaction at 298 K? <br><br>A+B↽⇀C+D ΔG°=12.86 kJ/mol<br><br>K=
agasfer [191]

Answer:

The equilbrium constant is 179.6

Explanation:

To solve this question we can use the equation:

ΔG = -RTlnK

<em>Where ΔG is Gibbs free energy = 12.86kJ/mol</em>

<em>R is gas constant = 8.314x10⁻³kJ/molK</em>

<em>T is absolute temperature = 298K</em>

<em>And K is equilibrium constant.</em>

Replacing:

12.86kJ/mol = -8.314x10⁻³kJ/molK*298K lnK

5.19 = lnK

e^5.19 = K

179.6 = K

<h3>The equilbrium constant is 179.6</h3>

8 0
3 years ago
NH3 is an example of A. an element. B. an atom. C. a mixture. D. a compound.
Keith_Richards [23]

Answer:

I believe it's an example of a compound.

4 0
4 years ago
Read 2 more answers
the temperature of a balloon rises from 275 degrees k to 395 degrees k, what would the ending volume be if it started at 5 L
Airida [17]
<h3>Answer:</h3>

7.182K

<h3>Explanation:</h3>

From the question we are given;

  • Initial temperature, T1 = 275 K
  • Final temperature, T2 = 395 K
  • Initial volume, V1 = 5 L

We are required to calculate the final volume, V2

  • Charles's law is the law that relates the volume of a gas and its temperature.
  • It states that the volume of a fixed mass of a gas and its absolute temperature are directly proportional at a constant pressure.
  • Therefore;

\frac{V1}{T1}=\frac{V2}{T2}

To calculate, V2 we rearrange the formula;

V2=\frac{V1T2}{T1}

V2=\frac{(5L)(395K)}{275}

V2=7.182K

Therefore, the ending volume will be 7.182K

8 0
4 years ago
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