Heat can be transferred from one material to another by direct touch (conduction), by differences in density of a fluid (temperature difference), and by RADIATION
Answer:
How many electrons does each gold atom gain?
Answer:3
How many electrons does each iodine atom lose?
Answer:1
What is the total number of electrons that are moved in the oxidation-reduction reaction?
Answer:6
Complete the final balanced equation based on the half-reactions.
2Au(OH)3+6 HI 2 Au +1 3I2 +6 H2O
It may be C, but i'm not to sure.
this is the chemical change:
paper is cellulose, so when you burn it, you are essentially converting it to carbon dioxide.
hope this helps!
:)
The quantity of substance remains after 850 years is 8.98g if the half life of radioactive radium is 1,599 years.
<h3>What is half life period? </h3>
The time taken by substance to reduce to its half of its initial concentration is called half life period.
We will use the half- life equation N(t)
N e^{(-0.693t) /t½}
Where,
N is the initial sample
t½ is the half life time period of the substance
t2 is the time in years.
N(t) is the reminder quantity after t years .
Given
N = 13g
t = 350 years
t½ = 1599 years
By substituting all the value, we get
N(t) = 13e^(0.693 × 50) / (1599)
= 13e^(- 0.368386)
= 13 × 0.691
= 8.98
Thus, we calculated that the quantity of substance remains after 850 years is 8.98g if the half life of radioactive radium is 1,599 years.
learn more about half life period:
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A. Thermometer is the weather instrument that has most improved the accuracy of weather forecasts over the past 40 years.
