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3 years ago

Which isotopic ratio needs to be determined

Chemistry

1 answer:

Nina [5.8K]3 years ago

4 0

Answer: (4) C-14 to 6-12

Explanation:

Carbon dating is used to estimate the age of wooden trees which use carbon dioxide. Carbon has three naturally occurring isotopes.C-12 and C-13 are stable but C-14 is radioactive. C-14 decays to nitrogen-14 and has a half-life of 5,730 years.

Wooden trees naturally incorporate both the C-12 and C-14 during their lifetimes. When wooden trees die, it stops consuming more of radioactive carbon while the C-14 which is already present in them continues to decay back into nitrogen. With the help of C-12 to C-14 ratio, we can estimate the age of wooden objects.

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Which word equation shows lithium oxide being formed from the reaction between oxygen and lithium? oxygen lithium oxide right ar

Oliga [24]

The equation of the reaction for the formation lithium oxide from lithium and oxygen is given as:

$2Li + O_2 \rightarrow Li_2O$

<h3>What is the equation for the formation of Lithium oxide?</h3>

Lithium oxide is a compound formed from the reaction between lithium and oxygen.

The equation for the chemical reaction is given below:

$2Li + O_2 \rightarrow Li_2O$

Therefore, the reaction between lithium and oxygen yields lithium oxide.

Learn more about reactions at: brainly.com/question/26018275

#SPJ4

5 0

2 years ago

The molar heat capacity of a compound with the formula C2H6SO is 88.0 J/mol-K. The specific heat of this substance is __________

lisabon 2012 [21]

Answer : The specific heat of this substance is, 1.13 J/g.K

Explanation :

Molar heat capacity : It is defined as the amount of heat absorbed by one mole of a substance to raise its temperature by one degree Celsius.

As we are given that the chemical formula of compound is, $C_2H_6SO$

First we have to calculate the molar mass of given compound.

Molar mass of $C_2H_6SO$ = $2(12g/mol)+6(1g/mol)+32g/mol+16g/mol$

Molar mass of $C_2H_6SO$ = 78 g/mol

Now we have to calculate the specific heat of this substance.

Specific heat of this substance = $\frac{\text{Molar heat capacity of a compound}}{\text{Molar mass of }C_2H_6SO}$

Specific heat of this substance = $\frac{88.0J/mol.K}{78g/mol}$

Specific heat of this substance = 1.13 J/g.K

Thus, the specific heat of this substance is, 1.13 J/g.K

7 0

3 years ago

What are isoelctronic species

BARSIC [14]

Species that have the same number of electrons or the same electronic structure.

6 0

3 years ago

How many bonds can sodium form

Tresset [83]

it exists as atom or ion but not as sodium molecule. So there is no any sodium sodium bonding between two sodium atoms. Sodium combines with other element or group to form compounds of sodium like sodium chloride ,sodium carbonate ,sodium sulphate etc. Sodium has symbol Na and its atomic no. is 11 .

4 0

3 years ago

Read 2 more answers

The specific heat capacity of a certain type of cooking oil is 1.75 J/(g⋅∘C). What is the amount of heat exchanged when the temp

anygoal [31]

Answer:

Q = -811440 J

Explanation:

Given data:

Mass of oil = 2.76 Kg (2.76× 1000 = 2760 g)

Initial temperature = 191 °C

Final temperature = 23°C

Specific heat capacity of oil = 1.75 J/g.°C

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 23°C - 191 °C

ΔT = -168°C

Q = 2760 g ×1.75 J/g.°C ×-168°C

Q = -811440 J

Negative sign show heat is released.

6 0

3 years ago