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Chemistry

2 answers:

professor190 [17]3 years ago

7 0

Answer:

2560 cm = 25.6m

Explanation:

Tasya [4]3 years ago

5 0

The answer is 36m enjoy

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(b) Which of the following is a mixture?

bija089 [108]

Answer:

Explanation:

Mixture is a combination of two or more elements and sodium is an element with a chemical symbol Na and a charge of +1 and chloride too is an element with a chemical symbol Cl and a charge of -1 so when these two elements are combine it form a chemical solution called Sodium chloride

4 0

2 years ago

What is the energy of a single photon of blue light with a wavelength of 488 nm (488 × 10-9 m)?

Vinvika [58]

E = hf

c = speed of electromagnetic wave, c ≈ 3 * 10⁸ m/s,
Planck's constant h = 6.63 *10⁻³⁴ Js

h = Planck's constnat, Frquency, f = c/λ = (3*10⁸)/(488*10⁻⁹)

E = hf

E = hc/λ

E = (6.63 * 10⁻³⁴ * 3 * 10⁸) /(488 * 10⁻⁹)

Energy, E ≈ 4.0758 * 10⁻¹⁹ Joules.

3 0

3 years ago

Read 2 more answers

Please help, I'm struggling with stoichiometry

rusak2 [61]

Answer:

a) HNO3

b) 26.8g (3 s.f.)

c) 1.29g (3 s.f.)

Please see the attached pictures for full solution.

To balance an equation, ensure that the number of atoms for each element is the same on both sides.