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Dominik [7]
3 years ago
13

Can any of you unscramble the word mmncotiuy

Chemistry
2 answers:
Elden [556K]3 years ago
7 0
Mmncotiuy unscrambled would be Community
iris [78.8K]3 years ago
5 0
The answer is Community
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What is the scientific name for weight?
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4 years ago
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The half life of a certain radioactive element is 800 years. How old is an object if only 12.5% of radioactive atoms in it remai
Levart [38]

Given,  half life of a certain radioactive element = 800 years.

Amount of substance remaining at time t = 12.5%

Lets consider the initial amount of the radioactive substance  = 100%

Using the half life equation:

A = A₀(1/2)^t/t₁/₂

where A₀ is the amount of radioactive substance at time zero and A is the amount of radioactive substance at time t, and t₁/₂ is the half-life of the radioactive substance.

Plugging the given data into the half life equation we have,

12.5 = 100 . (1/2)^t/800

12.5/100 = (1/2)^t/800

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6 0
4 years ago
How is rubidium used
Virty [35]

Answer:

Rubidium is used in vacuum tubes as a getter, a material that combines with and removes trace gases from vacuum tubes. It is also used in the manufacture of photocells and in special glasses. Since it is easily ionized, it might be used as a propellant in ion engines on spacecraft.

Symbol: Rb (37)

Atomic Weight: 85.4678

Atomic Number: 37

Number of Stable Isotopes: 1 (View all isotope .

6 0
3 years ago
You are trying to determine the volume of the balloon needed to match the density of the air in the lab. You know that if you ca
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To solve this problem, we must be given first the density of air at 20 degrees Celsius. Looking up online, this is equal to:

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5 0
3 years ago
One method of favoring the formation of an ester is to add excess acetic acid. Suggest another method, involving the right-hand
Inessa [10]

Answer: decrease the temperature of the reaction

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CH3COOH + CH3CH2OH ⇌ CH3COOCH2CH3 + H2O

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7 0
3 years ago
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