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Crank
3 years ago
7

The precision of a method is being established, and the

Chemistry
1 answer:
Lemur [1.5K]3 years ago
7 0

Answer:

No,  22.09%  is not a valid measurement

Explanation:

Precision has to do with how close a given set of measured values are to each other. It is quite different from accuracy. Accuracy refers to how close a given set of values is to the true value. A given set of values may be precise but not accurate and vice versa.

If we look at the values obtained;  22.09%,  22.15%, 22.18%, 22.23%, 22.25%, the value 22.09% is too far off the other values. This implies that it does not represent a valid measurement since it is not close to all the other values obtained.

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How do the chemical properties of the halegons compare to those of the noble gases
saul85 [17]

Answer:

The halogens are extremely reactive, whilst the noble gases are mainly inert.

Only some noble gases tend to form compounds, such as xenon and krypton. However, some like helium, almost have no compounds at all. Noble gases also have octet rule shells, which causes the little reactivity associated with them. To form bonds with noble gases, a lot of energy is required to form those bonds. Halogens, on the other hand, are extremely reactive. Compounds like chlorine and fluorine must be stored carefully, as they will oxidise anything that they can find, just to get one extra electron to get an octet configuration.


Hope this helps :)

6 0
3 years ago
Read 2 more answers
Based on this reaction, find how many moles of co can be obtained starting with 7 mol ch4?
Klio2033 [76]
I will solve the question assuming the reaction used as below
1 CH4(g) + 1 H2O(g) ==> 1 CO(g) + 3 H<span>2(g)

In the reaction, CH4 is the reactant and CO is the wanted product. If you look at the coefficient of the substance, for every 1 mol of CH4 react there will be 1 mol of CO produced. So, if you have 7 moles of CH4 the amount of CO produced would be: 7 moles * 1/1= 7 moles of CO</span>
5 0
3 years ago
Read 2 more answers
Please help<br><br> SOS<br><br> and explain please if you know how
vfiekz [6]

Answer:

<h2>1 N2+ 1 O2 are two N atoms and two O atoms.</h2>

<h3>In NO, there is one N and one O atom.</h3>

For both sides to be the same, there have to be 2 NO molecules, as 2 NO molecules contain 2 N atoms and 2 O atoms, just like starting products of the reaction.

8 0
3 years ago
Name two ways in which carbon dioxide is added to the troposphere.
Vedmedyk [2.9K]

Answer:

Carbon dioxide is added to the atmosphere through cellular respiration and the combustion of fossil fuels

Explanation:

3 0
3 years ago
Cesium sulfite is formed from the cs cation and the so2−3 anion. What is the correct formula for this compound?
Anna35 [415]

Cesium Sulfite is formed from the Cs cation and the SO₃⁻² anion. The correct formula for this compound is Cs₂SO₃.

<h3>What is Cation ? </h3>

Cations are positively charged ions. It forms when an element lose one or more electrons.

<h3>
What is Anion ? </h3>

Anions are negatively charged ions. It form when an element gains one or more electrons.

Symbol         Cs⁺¹         SO₃⁻²

Valency           +1              -2

Formula of the compound is Cs₂SO₃.

Thus from the above conclusion we can say that Cesium Sulfite is formed from the Cs cation and the SO₃⁻² anion. The correct formula for this compound is Cs₂SO₃.

Learn more about the Cation and Anions here: brainly.com/question/20005547
#SPJ1

3 0
2 years ago
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