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stich3 [128]
3 years ago
12

What volume of 0.128 M HCl is needed to neutralize 2.87 G of Mg(OH)2?

Chemistry
1 answer:
qaws [65]3 years ago
4 0
V= .768L= 76.8ml HCL
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How many electrons elements are present in period 2 ?​
AVprozaik [17]
There are Eight elements
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2 years ago
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A. What is a period on the periodic table?
malfutka [58]

Answer:

In chemical bonding: Arrangement of the elements. The horizontal rows of the periodic table are called periods. Each period corresponds to the successive occupation of the orbitals in a valence shell of the atom, with the long periods corresponding to the occupation of the orbitals of a d subshell.

Explanation:

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3 years ago
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Three chemistry students measured the length of a copper bar. The recorded lengths were 5.05 cm, 5 cm , and 5.1 cm, What is the
Salsk061 [2.6K]
5.05 + 5 + 5.1 = 15.15cm Then you just divide it by the amount of measurements you had like this:15.15 ÷ 3 = 5.04999971cm Then you can just round it to the 3rd figure: 5.05cm < And that's the mean/average length of the bar. :) (Or the one above if you want all of the decimals too) 
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3 years ago
How do the properties of a compound compare to the properties of the elements that make it up? A. the properties of the compound
Rufina [12.5K]

A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds.

3 0
3 years ago
The following reaction is found to be at equilibrium at 25 celcius: 2SO3---&gt;O2 + 2SO2 + 198kJ/mol. If the value for Kc at 25
kondaur [170]

Answer:

D.) Products are weakly favored

Explanation:

For the reaction:

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The kc is defined as:

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As the kc is 8,1:

8,1 [SO₃]² =  [O₂] [SO₂]²

The products are favored 8,1 times. This is a weakly favored because the usual kc are in the order of 1x10⁴. Thus, right answer is:

D.) Products are weakly favored

I hope it helps!

4 0
3 years ago
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