Answer:
The gas is Methane at 340K
Answer:
49.4 mol Oxygen
Explanation:
Mg(NO3)2 ----- 6 O
1 mol 6 mol
8.24 mol x mol
x = 8.24*6/1 = 49.44 mol ≈ 49.4 mol Oxygen
Answer:
a) Moles of iodine molecules = 0.0748 moles of Iodine molecules
b) Moles of iodine atoms = 0.150 moles of iodine atoms
c) Number of iodine atoms = 9.03 * 10²² atoms
d) Number of iodine molecules = 4.50 * 10²² molecules
Note: The complete question is found in the attachment below.
Explanation:
a. Number of moles of iodine molecules in 19.0 g of I₂
Molar mass of iodine molecule = 2 * 127 g/mol = 254g/mol
Number of moles = mass / molar mass
Number of moles = 19.0 g / 254 g/mol
Moles of iodine molecules = 0.0748 moles of Iodine molecules
b) Number of moles of iodine atoms
I mole of iodine molecules contains 2 moles of iodine atoms
Therefore, 0.0748 moles of iodine molecules will contain 2 * 0.0748 moles of iodine atoms
Moles of iodine atoms = 0.150 moles of iodine atoms
c) Number of iodine atoms = number of moles of iodine atoms * 6.02 * 10²³
Number of iodine atoms = 0.150 * 6.02 * 10²³
Number of iodine atoms = 9.03 * 10²² atoms
d) Number of iodine molecules = number of moles of iodine molecules * 6.02 * 10²³
Number of iodine molecules = 0.0748 * 6.02 * 10²³
Number of iodine molecules = 4.50 * 10²² molecules
B. 2Ba (aq)
C. 2Ag (aq)
D. CI(aq)
Answer:
Option C
Explanation:
Consider the ionic equation of this chemical equation. We are given barium chloride and silver nitrate as the reactants, and silver chloride and barium nitrate as the products. We can thus conclude that the ionic equation ( not balanced yet ) should be as follows -
Ba( 2 + ) + Cl ( - ) + Ag ( + ) + NO3 ( - ) ------> AgCl + Ba( 2 + ) + NO3( - )
As you can see these compounds are present in aqueous solutions, and are thus dissociated.
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Now let us take a look at the number of elements on the reactant and product sides, and balance this chemical equation out -
Ba( 2 + ) + 2Cl ( - ) + 2Ag ( + ) + 2NO3 ( - ) ------> 2AgCl + Ba( 2 + ) + 2NO3( - )
Solution = Option C!
41.0 + 78.3 =
Ans: 1) 1.41
2) 119.3
While adding two numbers, the rule of significant figures requires that the number of decimal places in the final answer is equal to that of the term with the least decimal places
In the given examples:
1) 0.09 - has 2 decimal places
1.324- has 3 decimal places
Sum = 0.09 + 1.324 = 1.414
Round off to 2 decimal places = 1.41
2) 41.0 - has 1 decimal place
78.3- has 1 decimal place
Sum = 41.0 + 78.3 = 119.3
Final answer will also have 1 decimal place = 119.3
1. 1.141
2. 119.3
HOPE THIS HELPS.
Answer: option A. to decrease the solubility of the organic product in water
Explanation: sodium chloride solution act as a drying agent to remove water from an organic compound that is in solution. The salt water works to pull the water from the organic layer to the water layer,therby decreasing
5.22x10^-3 = [? ]x 10^-2
Answer:
?=0.522
Explanation:
5.22*10^-3=?*10^-2
5.22*0.01=?*0.1
0.522=?
This is my first time answer question, thx!
Answer:
0.522
Explanation: