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goldfiish [28.3K]
3 years ago
12

Describe the appropriate way to smell an unknown substance in the lab.

Chemistry
2 answers:
Gnom [1K]3 years ago
4 0

Answer:

smelling it without glasses or putting your face/nose really close to the substance

Explanation:

Karolina [17]3 years ago
3 0
You waft it and try to smell it without holding it directly to your face
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High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to
Alchen [17]

Answer:

2,400,000 torr (3 s.f.)

Explanation:

Convert the pressure from Pascal to atm first:

\boxed{1 \: atm = 101325 \:Pa }

3.20 ×10⁸ Pa

= [(3.20 ×10⁸) ÷101325] atm

= 3158.2 atm (5 s.f.)

Convert atm to torr:

\boxed{1 \: atm = 760 \: torr}

3158.2 atm

= (3158.2 ×760) torr

= 2400000 torr (3 s.f.)

6 0
2 years ago
Which gas law describes the relationship between volume and pressure at a constant temperature?
olasank [31]
Boyle law is a gas law stating the pressure and the volume of a gas have an inverse relationship when held at constant temperature.

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3 years ago
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7 0
3 years ago
Which of the following statements is true?
Fittoniya [83]

Answer:

Es la tercera por qué cuando el material varía va cambiando de estado

Explanation:

8 0
2 years ago
How much energy does an X-ray with an 8 nm (8 x 10-9 m) wavelength have?
Vlada [557]

Answer: 2.48×10^-17 J

Explanation:

Given the following :

Wavelength = 8nm (8 x 10^-9 m)

Energy(e) of X-ray =?

Energy=[speed of light(c) × planck's constant (h)] ÷ wavelength

Speed of light = 3×10^8m/s

Planck's constant = 6.626×10^-34 Js

Wavelength = 8 x 10^-9 m

Energy = [(3×10^8) * (6.626×10^-34)] / 8 x 10^-9

Energy = [19.878×10^(8-34)] / 8 x 10^-9

Energy = 2.48475 × 10^(-26+9)

Energy = 2.48×10^-17 J

8 0
3 years ago
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