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aleksklad [387]
3 years ago
6

What were elements characterized by in the 1860's

Chemistry
1 answer:
ahrayia [7]3 years ago
4 0

Answer:

Döbereiner singled out triads of the elements lithium, sodium and potassium as well as chlorine, bromine and iodine. He noticed that if the three members of a triad were ordered according to their atomic weights, the properties of the middle element fell in between those of the first and third elements.

Explanation:

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Please help me :( would really appreciate whoever that helps me thank you so much!
sergij07 [2.7K]

Answer:

Option e and f are possible

Explanation:

Since we know that 0.264 gallon = 1L ⇒ we change this in all equations.

8.08 L * A  =

a) 8.08 L * 0.264 gal / 8.08 L   = 0.264 gal = 1L

b) 8.08 L * 8.08 gallon / 0.264L = (8,08/ 0.264) L/0.264 L = 30.61 / 0.264 = 115.93 L *8.08 L

c) 8.08 L * 8.08 gallon / 1L = (8,08/ 0.264) L/1 L = 30.61 L * 8.08 L

d) 8.08 L * 0.264 L / 1 gallon =8.08 L * 0.264 L / 1 gal

e) 8.08 L * 0.264 gallon / 1L = 8.08 L *1L / 1L = 8.08 L

f) 8.08 L * 1L / 0.264 gallon = 8.08L * 1L / 1L = 8.08 L

The last 2 options are possible ( e and f )

7 0
4 years ago
Read 2 more answers
Please answer the following questions with the proper significant figures:
photoshop1234 [79]

a)32.670 + 1.2240 = 33.8904

33.8904-14.0 = 19.8904

b)12.080 × 4.050 × 0.231

=54.36 × 0.231

=12.55716

c)(3.051 × 103) ×(2.00 × 10.2)=

314.253 × 20.4 = 6410.7612

6 0
4 years ago
2.50 L of gas originally at 50 K is warmed to 80 K. If the pressure remains constant, which gas law needs to be used to find the
Brilliant_brown [7]

Answer:

A

Explanation:

You want an equation that includes both V and T. Charles' Law states that V =kT or V₁/T₁ = V₂/T₂, so this is the best formula to use.

B: The Combined Gas Law is p₁V₁/T₂ = p₂V₂/T₂ will work, but it's overkill for the situation. You can assume any constant value for the pressure, and it will cancel from each side of the equation,

C is wrong. Boyle's Law is p₁V₁ = p₂V₂. It does not include the temperature.

D is wrong. Gay-Lussac's Law is p₁/T₂ = p₂/T₂. It does not include the volume.

7 0
3 years ago
What is the correct order of increasing density?
klasskru [66]

Answer:

(Density = mass/volume) Arrange the following in order of increasing density - air, exhaust from chimneys, honey, water, chalk, cotton and iron. Answer: The increasing order of density is air < exhaust from chimney < cotton < water < honey < chalk < iron.

Explanation:

7 0
3 years ago
Commercial grade fuming nitric acid contains about 90.0% HNO3 by mass with a density of 1.50 g/mL, calculate the molarity of the
andrew-mc [135]

Answer:

Since molarity is defined as moles of solute per liter of solution, we need to find the number of moles of nitric acid, and the volume of solution.

molar mass of nitric acid (HNO3) = 1 + 14 + (3x16) = 15 + 48 = 63 g/mole

1.50 g/ml x 1000 ml = 1500 g/liter

1500 g/liter x 0.90 = 1350 g/liter of pure HNO3 (the 0.9 is to correct for the fact that it is 90% pure)

1350 g/liter x 1 mole/63 g = 21.43 moles/liter = 21 Molar HNO3

= 21 Molar of HNO3

8 0
3 years ago
Read 2 more answers
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