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dsp73
3 years ago
6

How do you write zinc chloride as a chemical formula?

Chemistry
1 answer:
Snezhnost [94]3 years ago
7 0
ZnCl2 is the chemical formula, hope this helps.

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Mass transfer rate in convection is ..... mass transfer in conduction
lana66690 [7]

Answer:

(a) more than

Explanation:

Conduction:

Transfer of heat due to direct contact between two mediums at different temperatures, without having any of the bodies traveling. Therefore, conduction heat transfer occurs by the transfer of momentum (molecular) from always the same group of molecules in one medium to another group of molecules in another medium.

Example: Heat transfer INSIDE a solid.

Convention:

Transfer of heat or mass due to at least one traveling medium, where the transfer of momentum is not bounded anymore to the same groups of molecules. Molecules moving to transfer their momentum and keep flowing to the next group, also allowing other molecules behind to do the same. Example: heat transfer by the wind.

Hence, the Mass transfer rate in convection is <u>more than</u> mass transfer in conduction

6 0
3 years ago
SnO2 + C → Sn + СО balance​
rewona [7]

Answer:

Tin(IV) Oxide + Carbon = Tin + Carbon Monoxide

Explanation:

7 0
3 years ago
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In this reaction _____. A scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, and
Helga [31]

In this reaction the products have less potential energy than the reactants.

A scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, and the other consists of C and D.

The products are two molecules, one of which consists of A and C, and the other consists of B and D.

The energy of molecules AB and CD is higher than the energy of molecules AC and BD.

In this reaction heat has been released to the environmen.

A scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, and the other consists of C and D.

The products are two molecules, one of which consists of A and C, and the other consists of B and D.

The energy of molecules AB and CD is higher than the energy of molecules AC and BD. CD is a product entropy has decreased the products have less potential energy than the reactants AC is a reactant the products have been rearranged to form reactants.

5 0
3 years ago
Estradiol is a female sexual hormone that causes maturation and maintenance of the female reproductive system. Elemental analysi
Ipatiy [6.2K]

Answer:

The molecular formula of estradiol is: C_{18}H_{24}O_2.

Explanation:

Molar mass of of estradiol = M= 272.37 g/mol

Let the molecular formula of estradiol be C_xH_yO_z

Percentage of an element in a compound:

\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{molecular mass of element}}\times 100

Percentage of carbon in estradiol  :

\frac{x\times 12 g/mol}{272.37 g/mol}\times 100=79.37\%

x = 18.0

Percentage of hydrogen in estradiol  :

\frac{y\times 1g/mol}{272.37 g/mol}\times 100=8.88\%

y = 24.2 ≈ 24

Percentage of oxygen in estradiol  :

\frac{z\times 16 g/mol}{272.37 g/mol}\times 100=11.75\%

z = 2

The molecular formula of estradiol is: C_xH_yO_z:C_{18}H_{24}O_2

7 0
3 years ago
Will Mark Brainliest!
Margarita [4]

Answer:

C₄H₉O₂

Explanation:

just count the amount of atoms present in the model.

8 0
3 years ago
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