1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
seraphim [82]
3 years ago
10

When bismuth-212 undergoes alpha decay, it becomes which of the following?

Chemistry
2 answers:
Iteru [2.4K]3 years ago
8 0

Answer: -

When bismuth-212 undergoes alpha decay, it becomes ²⁰⁸Tl

Explanation: -

Mass number of ²¹²Bi = 212

Atomic number of ²¹²Bi = 83

When alpha decay occurs the mass number decreases by 4 and the atomic number decreases by 2.

Mass number of daughter = 212 - 4 = 208

Atomic number of daughter = 83 - 2 = 81

It is the atomic number of Thallium Tl.

Thus the daughter nucleide is ²⁰⁸Tl.

lana [24]3 years ago
8 0

Answer:

Thallium-208 + and alpha particle

Explanation:

Atomic number of Bismuth-212 is 83. The resulting nucleus after the emission of alpha particle has mass number 208 and atomic number 81. Atomic number 81 corresponds to Thallium-208.

You might be interested in
This investigation is a controlled experiment, so you can change only one variable at a time. Which reactant do you think Koby s
WINSTONCH [101]

Answer:

The baking soda

Explanation:

This is the more reactive part of the experiment. The more baking soda there is (compared to the vinegar), the stronger the reaction.

6 0
3 years ago
An unknown liquid has a mass of 30.8 g, and a volume of 31.5 mL. What is the density of this liquid?
julsineya [31]

The density of the liquid is 0.98 g/mL

<h3>What is density? </h3>

The density of a substance is defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as:

Density = mass / volume

With the above formula, we can obtain the density of the liquid.

<h3>How to determine the density </h3>
  • Mass = 30.8 g
  • Volume = 31.5 mL
  • Density =?

Density = mass / volume

Density of liquid = 30.8 / 31.5

Density of liquid = 0.98 g/mL

Learn more about density:

brainly.com/question/952755

3 0
2 years ago
Why are hydrogen bonds important for the properties of water?
zavuch27 [327]
Water has the special type of attraction called Hydrogen bonding.  The bonds between the Hydrogen and the Oxygen in each water molecule make a super dipole because the Oxygen atom is way more electronegative than the hydrogen atom.  These OH bonds can then be attracted to other H2O molecules.  If you have ever poured water up to the brim and there is  little bit of water that is poking above the top, hydrogen bonding keeps those water molecules from spilling
5 0
3 years ago
In the laboratory you are asked to make a 0.175 m barium iodide solution using 13.9 grams of barium iodide. How much water shoul
BARSIC [14]

<u>Answer:</u> The mass of water that should be added in 203.07 grams

<u>Explanation:</u>

To calculate the molality of solution, we use the equation:

\text{Molality}=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

Where,

m = molality of barium iodide solution = 0.175 m

m_{solute} = Given mass of solute (barium iodide) = 13.9 g

M_{solute} = Molar mass of solute (barium iodide) = 391.14 g/mol

W_{solvent} = Mass of solvent (water) = ? g

Putting values in above equation, we get:

0.175=\frac{13.9\times 1000}{391.14\times W_{solvent}}\\\\W_{solvent}=\frac{13.9\times 1000}{391.14\times 0.175}=203.07g

Hence, the mass of water that should be added in 203.07 grams

4 0
3 years ago
Select the correct characteristics describing normal-phase and reversed-phase chromatography. Normal-phase chromatography Revers
qwelly [4]

Answer:

(a) Polarity of phase: 1. Stationary phase is polar

b) Eluent strength of solvent:  1. Increases as solvent becomes more polar

c) Nature of solutes.1. Polar

d) Nature of solute interaction:2. More soluble in mobile phase as the polarity of the mobile phase decreases

e) Polarity of phases: 1. Stationary phase is polar

f) Eluent strength of solvent: 1. Increases as solvent becomes more polar.

g) Nature of solutes: 1. Polar

h) Nature of solute interaction: 2. More soluble in mobile phase as the polarity of the mobile

Explanation:

3 0
3 years ago
Other questions:
  • What do any two samples of the element mercury (Hg) have in common?
    15·2 answers
  • Describe some ways you could keep ice from melting over a long period of time?
    8·1 answer
  • Addition reactions of alkenes are characterized by _________. A) formation of a bond B) addition of two groups across a double b
    11·1 answer
  • Density is given in ____. a. Pa/cm3 c. g/s2 b. N/m2 d. g/cm3 Please select the best answer from the choices provided A B C D
    11·2 answers
  • What does the muscular system do
    8·1 answer
  • Define an independent variable in an experiment. Explain the term with respect to the solubility of salt at different temperatur
    13·1 answer
  • One atom of silicon can properly be combined in a compound with
    11·1 answer
  • The mole concept will most likely be used in
    14·1 answer
  • What type of chemist studies how materials conduct electricity?
    9·2 answers
  • The chemical equation below shows the decomposition of nitrogen triiodide (NI3) into nitrogen (N2) and iodine (I2). 2NI3 Right a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!