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Drupady [299]
4 years ago
15

Express 450 x 10-9 m (wavelength of blue light) in decimal notation (i.e., express

Chemistry
1 answer:
Llana [10]4 years ago
3 0

Answer:

0.00000045 m  is the wavelength of blue light in decimal

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Which of the following statements about Avogadro’s Law is false? a. One mole of He occupies 22.4 L at STP. b. At constant P and
Ronch [10]

Answer:

The correct answer to the question which  statements about Avogadro’s Law is false is

c. At constant T and P, doubling the moles of gas decreases the volume by half.

Explanation:

Avogadro's law describes the relationship between the volume of a mass of gas and the number of moles present. Avogadro's law states that at standard (or the same) temperature and pressure, equal volumes od all gases contain equal number of molecules

That is mathematically

\frac{V_{1} }{n_{1} }  =  \frac{V_{2} }{n_{2} }  where

V₁ = volume  of first sample

V₂ = volume  of second sample

n₁ = number of moles in first sample

n₂ = number of moles in second sample

6 0
3 years ago
What is the first basic metal on the periodic table
kherson [118]

The first basic metals on the periodic table are alkali metals.
4 0
3 years ago
The charges of a set of isoelectronic ions vary from 3+ to 3-. Place the ions in order of increasing size.
ser-zykov [4K]

Answer:

Explanation:

  Iso-electronic species have same number of electrons . Positive charged ions will have smaller size . As electrons add , size increases due to electronic repulsion .

Following species are isoelectronic .

Al³⁺ < Mg²⁺ < Na¹⁺ < Ne < F⁻¹ < O⁻² < N⁻³

4 0
3 years ago
The law of conservation of matter states that matter cannot be created or destroyed. This law applies when a chemical change occ
lora16 [44]
It says it will never change. So whatever it was before the change, it will be the same after the change. So, 200 should be correct.
4 0
3 years ago
The temperature of a 500. ml sample of gas increases from 150. k to 350. k. what is the final volume of the sample of gas, if th
Andreas93 [3]
<span>Answer: 1170 ml is the final volume of the sample of gas, if the pressure and moles in the container is kept constant.</span>
7 0
3 years ago
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