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ehidna [41]
3 years ago
13

Indicator paper can be used to measure the _________________ of a solution. indicators are substances that are different _______

____________ depending on the ph of the solution tested. another way to measure the acidity of the solution is the _________________ , which uses electrodes placed in solution to directly read the results.
Chemistry
1 answer:
Ede4ka [16]3 years ago
3 0

sorry, but im just learning some chemistry myself so i only know that the 1st blank is: Ph

hope you can find what the other 2 blanks are

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A sample of 5.30 mLmL of diethylether (C2H5OC2H5;density=0.7134g/mL)(C2H5OC2H5;density=0.7134g/mL) is introduced into a 6.50 L L
lilavasa [31]

Answer:

1.16atm

Explanation:

We are going to derive the mass of ether from density

mass=density *volume

Also moles=mass/molecular mass

molar mass C2H5OC2H5 =74.12 g/mole

the density of ether is 0.7134 g/ml

mass C2H5OC2H5 = 5.30 ml x 0.7134 g/ml = 3.78 g

moles C2H5OC2H5 =3.78 g x 1 mole/74.12 g = 0.0509 moles

PV = nRT where P=?; n=0.0509 moles; V=6.50L; R=0.0821 Latm/Kmol; T=35ºC +273 = 308K

P = nRT/V = 0.0509)(0.0821)(308)/6.50

P = 0.198 atm (to 3 significant figures (this is the partial pressure of diethyl ether).  

TOTAL PRESSURE

P1+p2+p3

= 0.198 atm + 0.750 atm + 0.207 atm =1.1550atm

1.16atm(3 significant figures)

5 0
4 years ago
I NEED HELP NOW PLEASE<br><br> I KNOW ITS A LOT BUT I REALLY NEED HELP LIKE DESPERATELY
Montano1993 [528]
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What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? Multiple Choice the chirality center retai
denpristay [2]

Answer:

The incomplete and varying inversion of configuration takes place at the chirality center.

Explanation:

When optically active alcohols react with HBr an SN1 reaction occurs.

In SN1 reactions an intermediate carbocation is formed in which the nucleophile can attack it on either side of the molecule. Therefore, there is a partial inversion of the center of chilarity of the molecule.

8 0
4 years ago
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There are three known forms of hydrogen. These forms are called (ions/copies/isotopes) of each other. Each of these forms will h
liraira [26]
Answers by order. 
Isotopes.
Protons.
Neutrons. 
7 0
3 years ago
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Using your knowledge of reactions and mechanisms, draw the mechanism for the formation of 2-methylpropene from 2-methyl-2-propan
BARSIC [14]

Answer:

Here's what I get  

Explanation:

The reaction is an E1 elimination of an alcohol to form an alkene. It has three steps:

1. Protonation

The alcohol is protonated with aqueous sulfuric acid to convert it into a better leaving group.

2. Loss of the leaving group

A water molecule leaves in a unimolecular process to form a stable 3° carbocation.

3. Loss of an α-hydrogen

A water molecule removes an α-hydrogen, forming 2-methylpropene and regenerating the original hydronium ion.

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