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OlgaM077 [116]
3 years ago
14

Write the word and balanced chemical equations for the reaction between: Water+ calcium

Chemistry
1 answer:
kherson [118]3 years ago
3 0

Answer:

Equation for Calcium Hydroxide Dissolving in Water | Ca(OH)2 + H2O.

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Wich value gives the number of particles in 1 mol of a substance
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Answer: 6.022x10²³ (Avogadro's Number)

Explanation: The number of particles in 1 mole of a substance is determined by the Avogadro's Number.

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According to the data in the table, which sample of matter is most likely a metal?
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Substance 3 Is most likely to be a Metal for Its malleability and conductive properties.
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True or False: The particles in the GASEOUS state are the furthest apart
tatyana61 [14]
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4 0
3 years ago
How many atoms of H are in 1 mole of NH3
Gnoma [55]

Answer:

Before you use log you have to multiply the answer of 8.66 mol by 6.02⋅1023 by 3 because the answer of 8.66 mol by 6.02⋅1023 gives you the number of ammonia molecules and in each molecules there are 3 hydrogen atoms present.

Explanation:

3 0
3 years ago
What is the molar mass of 4.23 g of an elemental gas in a 2.5L container at 282K and 1.4 atm?
balu736 [363]

Answer:

27.98g/mol

Explanation:

Using ideal gas law equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

T = temperature (K)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

According to the information given:

V = 2.5L

P = 1.4 atm

T = 282K

n = ?

Using PV = nRT

n = PV/RT

n = 1.4 × 2.5/0.0821 × 282

n = 3.5/23.1522

n = 0.151mol

Using the formula to calculate molar mass of the elemental gas:

mole = mass/molar mass

Molar mass = mass/mole

Molar mass = 4.23g ÷ 0.151mol

Molar mass = 27.98g/mol

6 0
3 years ago
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