Sand/quartz or silicon dioxide contains both silicone and oxygen
hope that helps
Cl2 + NaI -> NaCl + I2
We are unbalanced with Chlorine and Iodine so we can do this:
Cl2 + 2NaI -> 2NaCl + I2
Reactants: Cl = 2, Na = 2, I = 2
Products: Cl = 2, Na = 2, I = 2
So we are balanced.
A river flows from approximately 45° north latitude toward the equator, as shown in the diagram below. As the water molecules in the river approach the equator the next to be happen is t<span>he molecules heat up and eventually form water vapor.
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Answer:
237.80mL
Explanation:
Molarity of a solution can be calculated using the formula;
Molarity = number of moles (n) ÷ volume (V)
However, we first need to calculate the number of moles of Cu(NO3)2 by using the formula:
moles = mass/molar mass
Molar mass of Cu(NO3)2 = 187.56 g/mol
moles = 146.59 ÷ 187.56
moles = 0.782moles
Molarity = n/V
3.28 = 0.78/V
V = 0.78/3.28
V = 0.2378L
In milliliters (mL), 0.24 litres = 0.24 × 1000
= 237.80mL
According to Electro-chemical series the metal with more -ve potential will replace the metals below it in series in their salts and tend to oxidize.
A) not occurs since Mg more reactive than Ni (with -ve potential)
B) potential of Al is more -ve than iron so it can replace it in its salt and the reaction can occur spontaneously so
B is the correct answer.
C) Mercury cannot replace Al
D)
Zinc cannot also replace potassium