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arsen [322]
3 years ago
12

I have asked this before, to get more points, just put the same answer on the other questions

Chemistry
1 answer:
aleksklad [387]3 years ago
8 0
The standard atomic weight is the average mass of an element in atomic mass units ("amu"). Though individual atoms always have an integer number of atomic mass units, the atomic mass on the periodic table is stated as a decimal number because it is an average of the various isotopes of an element.
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Copper (II) nitrate, Cu(NO3)2, solution reacts with potassium hydroxide, KOH, to form a blue
Gekata [30.6K]

Answer:

Copper(II) nitrate and potassium hydroxide are soluble ionic compounds, which implies that they dissociate completely when dissolved in water to produce ions. ... You can thus say that the balanced chemical equation that describes this double ... Cu(NO3)2(aq)+2KOH(aq)→Cu(OH)2(s)⏐⏐↓+2KNO3(aq).

6 0
3 years ago
How many atoms are in the 3.5 moles of arsenic atoms?
Dmitry_Shevchenko [17]
Number of atom in one mole = 6.022 × 10²³
So, in 3.5 moles, it would be: = 6.022 × 10²³ * 3.5 = 2.1 × 10²⁴

In short, Your Answer would be 2.1 × 10²⁴ atoms

Hope this helps!
6 0
3 years ago
Read 2 more answers
A 55.0 g piece of iron at 505 ° C is put into 735 grams of water at 15.0 ° C. What is the final temperature of the water and the
denpristay [2]

Answer:

It would be 95.3

Explanation:

4 0
3 years ago
Metals bond with halogens to form colorless metal halides. During an experiment, bromine water was added to a solution of potass
Anvisha [2.4K]

Answer:

Bromine displaced iodide to form iodine

Explanation:

In this experiment, liquid bromine was allowed to react with a solution of potassium iodide.

Initially, we had a colorless KI solution which was mixed with light orange Br_2. If we add a light orange solution to a colorless solution, liquid bromine will get diluted and we'll see a slight decrease in its color intensity, however, if no reaction takes place, no color change will occur.

In the experiment, however, we examine a formation of a deep brown solution. Remember that iodine solution would form a brown solution.

As a result, bromine displaced iodide anion from potassium iodide:

2~KI~(aq) + Br_2~ (l)\rightarrow 2~KBr~(aq) + I_2~(aq)

8 0
3 years ago
What is not needed in the chemical formula for a covalent compound
vitfil [10]
You do not need the display of positive and negative charges.
3 0
3 years ago
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