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3 years ago

Convert 1.2030 moles of sodium chloride to grams

Chemistry

2 answers:

vazorg [7]3 years ago

5 0

70.306 would be your answer.

Nikolay [14]3 years ago

4 0

You take the moles and multiply by the molar mass

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???????????????????????? thanks

sashaice [31]

D. I, II, and IV. Basically everything but the temperature.

6 0

4 years ago

When the following equation is balanced, the coefficient of Al is ___ Al (s) + H20 (1) - Al(OH)3 (s) + H2 (g) A) 4 B) 1 C) 5 D)

Salsk061 [2.6K]

Answer: The correct answer is Option E.

Explanation:

Every balanced chemical equation follows law of conservation of mass.

This law states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The balanced chemical equation for the reaction of aluminium and water follows:

$2Al(s)+6H_2O(l)\rightarrow 2Al(OH)_3(s)+3H_2(g)$

The coefficient of Aluminium is 2.

Hence, the correct answer is Option E.

7 0

3 years ago

According to periodic table which elements has seven valence electrons

kondaur [170]

Halogens have seven valence electrons and reqires one more electron to complete its octet

7 0

3 years ago

What is the total E associated with one mole of photons (a unit known as the Einstein) of 3.91x1019 Hz?

sashaice [31]

Answer:

$E=1.56\times 10^{10}J$

Explanation:

The energy of a photon, E, can be calculated with the Planck-Einstein equation:

$E=hf$

Where:

h is Planck's constant 6.626×10⁻³⁴ J.s, and

f is the frequency of the photon or electromagnetic radiation.

Substituting with your data:

$E=6.626\times 10^{-34}J.s\times 3.91\times 10^{19}s^{-1}=2.5908\times 10^{-14}J$

Now multiply by Avogadro's number to obtain the energy of one mole of photons:

$E=2.5908\times 10^{-14}J\times 6.022\times 10^{23}=1.56\times 10^{10}J$

8 0

3 years ago

5. Which factor is a primary cause of seasonal changes on Earth? A) change in Earth's distance from the Sun B) change in the rat

mixas84 [53]

Answer:

Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.

6 0

3 years ago

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