3 years ago

What is the physical state of water at 25 degree celsius

2 answers:

4 0

25 degrees celsius= 77 degrees Fahrenheit. This is not too cold to freeze the water and not too hot to boil it. This means the state is liquid.

kumpel [21]3 years ago

3 0

The state of water is liquid

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AlekseyPX

Answer:

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3 years ago

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Un ácido nítrico tiene una densidad de 10% ,calcular el peso de 1000 centímetros cúbicos

devlian [24]

D = M/V
D = 0.10
V = 1000 cm^3

0.10 = M / 1000
M = 100

Porque la densidad es 10%, se puede usar 0.10 en este formulario para calcular el peso. No sé lo que es la unidad para el peso pero es 100.

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3 years ago

An electron moved from a higher energy level to a lower energy level. What most likely happened during the transition? (4 points

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2 years ago

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How many grams are in 1.946 moles of nacl

Ilia_Sergeevich [38]

Answer:

113.8g

Explanation:

Statement of problem: mass of 1.946mole of NaCl

Given parameters:

Number of moles of NaCl = 1.946mole

Unknown: mass of NaCl

Solution

To find the mass of NaCl, we apply the concept of moles which expresses the relationship between number of moles and mass according to the equation below:

Number of moles = $\frac{mass}{molar mass}$

To find the molar mass of NaCl:

the atomic mass of Na = 23g

atomic mass of Cl = 35.5g

Molar mass of NaCl = (23 + 35.5) = 58.5gmol⁻¹

Mass of NaCl = Number of moles x molar mass of NaCl

Mass of NaCl = 1.946 x 58.5 = 113.8g

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2 years ago