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Sav [38]
3 years ago
6

The world's tallest artificial Christmas tree measured a mammoth 5.20 x 103 cm. How tall is the tree in kilometers?

Chemistry
2 answers:
allochka39001 [22]3 years ago
8 0
Super easy all you have to do is multiply the numbers which you already have laid out!

5.20 * 103 = 535.6 cm and in kilometers it is 0.00536 kilometer

You just divide the value by 100000
Reika [66]3 years ago
4 0

Answer:

0.0001

Explanation:

You might be interested in
The density of ethanol is 0.789 g/mL. Calculate the volume of 600 g of ethanol.
Anettt [7]

Answer:

The answer is

<h2>760.46 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}  \\

From the question

mass of ethanol = 600 g

density = 0.789 g/mL

It's volume is

volume =  \frac{600}{0.789}  \\  = 760.4562737...

We have the final answer as

<h3>760.46 mL</h3>

Hope this helps you

6 0
4 years ago
Four glass tanks contain water. In which tank is the pressure of the water on the base greatest.
Svetllana [295]
If it’s a multiple choice question A is the correct answer

4mx2mx3m
7 0
3 years ago
What is the molarity of a solution in which 175.8<br> grams of NaCl is dissolved in 1.5 L of water?
Sophie [7]
175.8 g NaCl to moles:
(175.8 g)/(58.44 g/mol) = 3.008 mol NaCl

Molarity = moles of solute/volume of solution in liters

(3.008 mol NaCl)/(1.5 L) = 2.0 M.

The molarity of this solution would be 2.0 M.
8 0
2 years ago
What is the percent ionization of a 1.8 M HC2H3O2 solution (Ka = 1.8 10-5 ) at 25°C?
xz_007 [3.2K]

Answer:

B) 0.32 %

Explanation:

Given that:

K_{a}=1.8\times 10^{-5}

Concentration = 1.8 M

Considering the ICE table for the dissociation of acid as:-

\begin{matrix}&CH_3COOH&\rightleftharpoons &CH_3COOH&+&H^+\\ At\ time, t = 0 &1.8&&0&&0\\At\ time, t=t_{eq}&-x&&+x&&+x\\ ----------------&-----&-&-----&-&-----\\Concentration\ at\ equilibrium:-&1.8-x&&x&&x\end{matrix}

The expression for dissociation constant of acid is:

K_{a}=\frac {\left [ H^{+} \right ]\left [ {CH_3COO}^- \right ]}{[CH_3COOH]}

1.8\times 10^{-5}=\frac{x^2}{1.8-x}

1.8\left(1.8-x\right)=100000x^2

Solving for x, we get:

<u>x = 0.00568  M</u>

Percentage ionization = \frac{0.00568}{1.8}\times 100=0.32 \%

<u>Option B is correct.</u>

8 0
3 years ago
What happens when sodium and potassium react with water?
alekssr [168]
They react and explode
5 0
3 years ago
Read 2 more answers
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