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IrinaK [193]
4 years ago
8

List two things you know about nonrenewable energy

Chemistry
2 answers:
ruslelena [56]4 years ago
8 0
It comes from fossil fuels and can not be replaced
Contact [7]4 years ago
6 0
It is natural and u can't by it
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How many grams of sodium can be reacted with 750 ml of a 6.0 m solution of sulfuric acid, h2so4?
devlian [24]
The balanced equation for the reaction between Na and H₂SO₄ is as follows;
2Na + H₂SO₄ ---> Na₂SO₄  + H₂
Stoichiometry of Na to H₂SO₄ is 2:1
the molar concentration of H₂SO₄ is 6.0 M
This means that in 1 L of H₂SO₄ - there are 6.0 mol of H₂SO₄
Therefore in 750 mL - \frac{6.0 mol* 750 mL}{1000mL }
Number of H₂SO₄ moles reacted - 4.5 mol
According to stoichiometry,
1 mol of H₂SO₄ reacts with 2 mol of Na
Therefore 4.5 mol reacts with 2x4.5= 9 mol of Na
Mass of Na reacted - 9 mol x 23 g/mol = 207 g of Na is required 
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4 years ago
K2HPO4 is a highly water-soluble salt. It can be used as a buffering agent, food additive, or
borishaifa [10]

Answer:

91.7%

Explanation:

3 0
3 years ago
Read 2 more answers
It takes 486.0 kJ/mol to convert sodium atoms to Na+ ions. Sodium atoms absorb and emit light of wavelengths 589.6 and 590.0 nm.
solmaris [256]
We first calculate the energy contained in one photon of this light using Planck's equation:

E = hc/λ

E = 6.63 x 10⁻³⁴ x 3 x 10⁸ / 590 x 10⁻⁹
E = 3.37 x 10⁻²² kJ/photon

Now, one mole of atoms will excite one mole of photons. This means that 6.02 x 10²³ photons will be excited

(3.37 x 10⁻²² kJ/photon) x (6.02 x 10²³ photons / mol)

The energy released will be 202.87 kJ/mol
8 0
3 years ago
The atomic mass of an atom can be found by
sashaice [31]
The answer to this question is A
8 0
3 years ago
A 150-lb person burns about 2700 Calories to run a marathon. How much energy is burned in kJ?
Alex17521 [72]
The question above is simply asking us to convert the value from calories into kilojoules. Therefore, we need some factor to multiply to be able to convert it to such units. For calories to kJ, the factor would be 4.184.

2700 cal ( 4.184 kJ/cal) = 11296.8 kJ
5 0
3 years ago
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