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sashaice [31]
4 years ago
8

He called me a lair.(into direct speech)​

Chemistry
1 answer:
yanalaym [24]4 years ago
5 0

He said i was a liar

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Match these items. 1. kg measurement of area 2. cm 2 measurement of length 3. L measurement of mass 4. m measurement of volume
Phoenix [80]

Answer:

Kg measurement of volume.

cm measurement of area

L measurement of length

m measurement of maes

4 0
3 years ago
the pressure inside each of two identical cylinders is equal to atmospheric pressure. one cylinder contains hydrogen, the other
ycow [4]

The number of moles of hydrogen is equal to the number of moles of nitrogen.

According to the ideal gas equation

PV = nRT

where

  • P = the pressure of the gas
  • V = the volume of gas
  • n = the total amount of ideal gas (moles)
  • R = the universal gas constant
  • T = the temperature

In the problems there are two identical cylinders means, V₁ = V₂

The pressure inside each of two identical cylinders is equal to atmospheric pressure means, P₁ = P₂

Both gases are at the same temperature, means T₁ = T₂

\frac{P_1 V_1}{P_2 V_2} \:=\: \frac{n_1 RT_1}{n_2 RT_2}

\frac{P_1 V_1}{P_2 V_2} \:=\: \frac{n_1 T_1}{n_2 T_2}

n₁ = n₂

So the total amount of hydrogen gas is equal to total amount of ideal nitrogen gas.

Learn more about the ideal gas equation here: brainly.com/question/27870704

#SPJ4

3 0
1 year ago
What 3 pieces of evidence did wegener use to support his theory
GenaCL600 [577]
1. Fossils, rocks and mountain range

2. The location of ancient climatic zones.

3. The continents have moves from the continental drift several lines of evidence
6 0
3 years ago
The value of the equilibrium constant for the following chemical equation is Kr 40 at 25°C. Calculate the solubility of Al(OH)s(
dedylja [7]

Answer:

0,040 M

Explanation:

The global reaction of the problem is:

Al(OH) (s) + OH⁻ ⇄ Al(OH)₂⁻(aq) K= 40

The equation of equilibrium is:

K = \frac{[Al(OH)_{2} ^-]}{[Al(OH)][OH^-]}

The concentration of OH⁻ is:

pOH = 14 - pH = <em>3</em>

pOH = -log [OH⁻]

[OH⁻] = 1x10⁻³

Thus:

40 = \frac{[Al(OH)_{2} ^-]}{[Al(OH)][1x10^{-3}]}

<em>0,04M =  \frac{[Al(OH)_{2} ^-]}{[Al(OH)]}</em>

This means that 0,04 M are the number of moles that the solvent can dissolve in 1L, in other words, solubility.

I hope it helps!

7 0
3 years ago
Besides hydrogen and oxygen what is required to produce the chemical reaction that yields water
timurjin [86]
Hey there! Hello!

In order for water to be formed, or for any reaction to occur, there needs to be something that splits the current bonds of hydrogen and oxygen up. In this case, some sort of activation energy is required. 

Hydrogen and oxygen are not found as single molecules in nature. They're found as 2 molecules linked together, as H2 and O2. An activation energy, such as heat, or some sort of catalyst needs to be used in order to split the two molecules up and make them link with one another. 

What happens afterwards is a chemical reaction that involves the valence electrons of oxygen (which has 6 on the outermost shell) and hydrogen (which has two on the outermost shell). The oxygen wants to have an octet (8 valence electrons) total, so it shares with the hydrogen, which is already satisfied with it's two valence electrons (according to the nature of hydrogen). 

But because there has to be a total of four molecules involved, two molecules of water are going to be produced as a result. 

2H+2O=2H20

Hope this helped you out! Feel free to ask me any additional questions if you need further clarification. :-)
3 0
3 years ago
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