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storchak [24]
3 years ago
10

May someone help me with these questions it is only 2

Chemistry
1 answer:
garri49 [273]3 years ago
6 0
Most likely decreased birth rate and increased emigration.
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Using the information in the table, what is the average atomic mass of sulfur
Mice21 [21]
32.063 u is the answer, add all the variables and divide
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What is Ionization Energy?
NARA [144]

Answer:

Ionization energy is a measure of the difficulty involved in  removing an electron from an atom or ion or the tendency of an atom or ion to surrender an electron.

Explanation:

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You have to prepare some 2 M solutions, with 10 g of solute in each. What volume of solution will you prepare, for each solute b
alexdok [17]

Answer:

             0.045 L  or 45 mL

Explanation:

Moles = Mass/M.Mass

Moles = 10 g / 109.94 g/mol

Moles = 0.09 moles

Also,

Molarity = Moles / Vol in L

Or,

Vol in L = Moles / Molarity

Vol in L = 0.09 mol / 2 mol/L

Vol in L = 0.045 L

8 0
2 years ago
PLEEAASSEE HELP ITS ALREADY WAY PAST DUE AND ILL GIVE BRAINLIEST
Softa [21]

Answer:  

A. unexpected change in odor

Explanation: Common physical changes include melting, change of size, volume, color, density, and crystal form. Example the classic baking soda and vinegar reaction provides evidence of a chemical change due to the formation of a gas and a temperature change.

6 0
3 years ago
Which of the following statements is a qualitative observation? A.The branch is three meters long. B.The substance tastes bitter
notka56 [123]

There are two kinds of analysis: qualitative and quantitative

In quantitative we analyse the amount of something that is how much of something is present / the quantity. Ex: the length of branch of tree, number of students in class, volume of a liquid in a beaker.

In qualitative analysis we determine the kind of substance / quality of substance / nature of substance.

like: colour of a substance, odor of a substance or taste (bitter / sour / sweet etc) of a substance

So answer is : B.The substance tastes bitter

7 0
3 years ago
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