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Kruka [31]
3 years ago
6

How can you demonstrate waves?​

Chemistry
1 answer:
Lady bird [3.3K]3 years ago
7 0
Shaking a phone cord, strumming a guitar string, playing a trumpet
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If 0.60 L of a solution contains 6.6 g of NaBr, what is its molar concentration?
-BARSIC- [3]

Answer:

Molarity = moles ÷ liters

to get moles of NaBr divide grams of NaBr by its molar mass (mass of Na + mass of Bromine)

Na = 22.989769

Br = 79.904

molar mass of NaBr = 102.893769

6.6g ÷ 102.893769 = 0.064143826 moles of NaBr

0.064143826 moles ÷ 0.60 liters = 0.1069 molar concentration or 11 %

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How many electrons elements are present in period 2 ?​
AVprozaik [17]
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2 years ago
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The pressure on 30 milliliters of an ideal gas increases from
Nana76 [90]

V1 = 30 mL

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V2 = ?

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760 torr * 30 mL = 1520 torr * V2

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( C ) is correct

8 0
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What elegant has 2 valence electrons
scZoUnD [109]

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