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dsp73
3 years ago
14

What type of chemical replacement is RbNO3 + BeF2 →Be(NO3)2 + RbF

Chemistry
1 answer:
Flauer [41]3 years ago
4 0

Answer:

Double replacement

Explanation:

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How do I calculate the moles consumed in a vinegar titration?
Shtirlitz [24]

Answer: Use the titration formula

Explanation:

8 0
3 years ago
In a volumetric analysis experiment, an acidic aqueous solution of methanol (CH3OH) is titrated with a solution of potassium dic
Lady bird [3.3K]

Answer:

27.64 liters

Explanation:

From the balanced equation, 2 moles of K2Cr2O7 requires 3 moles of CH3OH.

Mole of CH3OH = 1.9/32.04 = 0.0593 mole

Mole of K2Cr2O7 that will require 0.0593 mole of CH3OH:

                   2 x 0.0593/3 = 0.0395 mole

mole = molarity x volume

Volume of K2Cr2O7 needed = 0.0395/0.00143

                             = 27.64 Liter

<em>Hence, 27.64 liters of 0.00143 M K2Cr2O7 will be required to titrate 1.90 g of CH3OH dissolved in 50.0 mL of solution</em>

5 0
3 years ago
Write any five example of radical with their velencies​
garri49 [273]

Answer:

Terms in this set (13)

Hydroxide. OH.

Nitrate. NO3.

Ammonium. NH4.

Bicarbonate/Hydrogen Carbonate. HCO3.

Bisulphate. HSO4.

Chlorate. ClO3.

<h2>hope it's correct</h2>

7 0
2 years ago
8.
White raven [17]

Answer:

mixture of four compounds

mixture of two elements and two compounds

Explanation:

  1. it can be one of those
  2. can u tell me if its correct pls I'm studying this too

6 0
3 years ago
131i has a half-life of 8.04 days. assuming you start with a 1.53 mg sample of 131i, how many mg will remain after 13.0 days ___
inn [45]
For this problem we can use half-life formula and radioactive decay formula.

Half-life formula,
t1/2 = ln 2 / λ

where, t1/2 is half-life and λ is radioactive decay constant.
t1/2 = 8.04 days

Hence,         
8.04 days    = ln 2 / λ                         
λ   = ln 2 / 8.04 days

Radioactive decay law,
Nt = No e∧(-λt)

where, Nt is amount of compound at t time, No is amount of compound at  t = 0 time, t is time taken to decay and λ is radioactive decay constant.

Nt = ?
No = 1.53 mg
λ   = ln 2 / 8.04 days = 0.693 / 8.04 days
t    = 13.0 days 

By substituting,
Nt = 1.53 mg e∧((-0.693/8.04 days) x 13.0 days))
Nt = 0.4989 mg = 0.0.499 mg

Hence, mass of remaining sample after 13.0 days = 0.499 mg

The answer is "e"

8 0
3 years ago
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