Answer:
The mean of the 12 Zambian One kwacha coins is 5.583
Explanation:
Mean = Sum of the total masses ÷ No of different masses
Mean = 5.683+ 5.549 +5.548 + 5.552 + 5.620 + 5.536 + 5.539 + 5.684 + 5.551 + 5.552 + 5.554 + 5.632 ÷ 2
Mean = 67 ÷ 12
Mean = 5.583
The mean of the different Zambian one kwacha coins is 5.583
Question 16:
We are given the following balanced equation: (Remember to always balance the equation)
We are also told that Mg(OH)2 is in excess, meaning HNO3 is the limiting reactant, we will use its moles to find the number of moles of Mg(NO3)2, then we can convert that to mass.
The ratio between HNO3 and Mg(NO3)2 is 2:1
Therefore the number of moles of Mg(NO3)2 = 8.00 mol x (1/2) = 4.00 mol
Now we can convert the number of moles of Mg(NO3)2 to mass: molar mass of Mg(NO3)2 = 148,3 g/mol
So the mol will cancel the mol, then you will be left with g.
Answer:
Explanation:
Ionic compound are compounds formed by one atom losing an electron while the other gains electron as such the solution always contain charge ions compared to covalent solution which is predominantly formed by two atoms sharing electron. The two solution should be connected to a circuit with a bulb in turns with the same circuit, the solution that turns the bulb on is the ionic solution. This is because their charged ions conducts electricity when voltage is passed through it while the covalent solution does not conduct electricity.
Answer:
Hello! Some household items that are electroplated include kitchenware, such as metal pots and pans, door handles, mobile phones, and coins. An electroplated object is coated by electrolytic deposition with chromium, silver, or another metal.
Answer:
you r correct it is layer a and b
Explanation: