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romanna [79]
2 years ago
8

How many moles are in 2.3x1024 g of Ag? Plz help!!

Chemistry
1 answer:
ziro4ka [17]2 years ago
7 0

Answer:

              2.13 × 10²² moles

Explanation:

Relation between Mole and Mass is,

                             Mole = Mass / M.Mass

Putting values,

                             Mole = 2.3 × 10²⁴ g / 107.87 g/mol

                             Mole = 2.13 × 10²² moles

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Find the horizontal range of a projectile launched at 15 degrees to the horizontal with speed of 40m/s​
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To Find :

The horizontal range of a projectile launched at 15 degrees to the horizontal with speed of 40 m/s​.

Solution :

The horizontal range of a projectile is given by :

R = \dfrac{u^2 sin 2\theta}{g} ( Here, g is acceleration due to gravity = 10 m/s² )

Putting all value in above equation :

R = \dfrac{40^2 \times sin (2 \times 15)}{10} \ m\\\\R = \dfrac{1600 \times 1}{2\times 10} \ m\\\\R = 80 \ m

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3 years ago
An organic (covalent) compound is determined to contain 25.54% carbon, 6.43% hydrogen, and 68.03% oxygen. The molar mass of this
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Answer:

https://courses.lumenlearning.com/sanjacinto-atdcoursereview-chemistry1-1/chapter/formula-mass-and-the-mole-concept/

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https://courses.lumenlearning.com/sanjacinto-atdcoursereview-chemistry1-1/chapter/formula-mass-and-the-mole-concept/

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3 years ago
What is the empirical formula of the compound that is 25.3% magnesium and 74.7% chlorine
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Answer: MgCl_2

Explanation:

25.3% Mg

74.7% Cl

First step: change % to g

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74.7g Cl

Second step: calculate g/mol of each compound. You can do this by using the atomic mass.

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Third step: determine the lowest number and divide everything by it. Of the result, extract whole number only.

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Fourth step: Write each compound with their respective number below.

This empirical formula should be: MgCl_2

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<h3>What is global warming?</h3>

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As a result of the rise in global temperatures, the organisms would have to reduce their rate of metabolism.

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