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sasho [114]
2 years ago
6

Levi is conducting a comparative experiment where he is comparing the average temperature in cities and nearby rural areas. He f

inds that cities are on average one degree warmer than rural areas. What is a major limitation of his experiment?
A) Large amounts of information can be gathered.
B) It is repeatable.
C) He can not definitively show what causes the difference.
D) There is an independent variable and a dependent variable.
Chemistry
1 answer:
alukav5142 [94]2 years ago
3 0

The major limitation is that C) he can not definitively show what causes the difference.

It may be caused by <em>something the people are doing</em> (if so, what?) or it may be caused by <em>some environmental differences</em> or a<em> combination of both</em>.


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What mineral property is illustrated by this photograph?​
lbvjy [14]
<h2>Hardness, lustre, and colour.</h2>

Explanation:

These Rocks shown in photographs are made of different types of minerals which have properties as follows:

●The color of the rock is grey, brown and yellow after it is ground into a powder its color is streak.

● The lustre of the rock tells how shiny the rocks are.

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7 0
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In CaSO4, the oxidation number of Ca is<br> that of S is<br> and that of O is
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4 0
2 years ago
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If you want 2 miles of Silver (Ag) from the reaction below, how many grams of copper should you start with? Reaction: Cu + 2AgNO
RSB [31]

Answer:

You should start with 63.54 grams of copper.

Explanation:

The chemical reactions are processes in which the nature of the substances changes, that is, from some initial substances called reactants, totally different ones called products are obtained.

In the chemical reaction, the formulas of reagents and products appear preceded by numbers (the stoichiometric coefficients) that indicate the proportions according to which the transformation occurs. So you can say that stoichiometry establishes relationships between the molecules or elements that make up the reactants of a chemical equation with the products of said reaction. The relationships that are established are MOLAR relationships between the compounds or elements that make up the chemical equation: always in MOLES.

The stoichiometric coefficients of a chemical equation are due to the fact that the atoms present before the reaction must be the same after the reaction, although they will have been rearranged to produce new substances.

If you want 2 moles of silver (Ag), for stoichiometry of the reaction you need a moles of copper Cu. Being the molar mass of copper Cu 63.54 g / mole, then:

1 mole*63.54 g/mole= 63.54 g

<u><em> You should start with 63.54 grams of copper.</em></u>

<u><em></em></u>

8 0
2 years ago
Freshwater is distributed in both time and space
Neko [114]
Answer:

Unevenly

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7 0
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