Density is an intensive property, meaning it does not change as the amount of substance changes. It only depends on the type of substance, not its quantity.
Density is an example of an intensive property. Intensive properties don't change as the amount of the substance changes. They depend only on the nature of the substance, not its quantity. Other examples of intensive properties are boiling point, color, and temperature. On the other hand, extensive properties, such as volume and mass, change when the quantity of the substance changes.
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b. mildly
c. highly
d. The name of the element is needed to figure this out.
Answer:The correct answer is C. Highly
Explanation:
its correct because I got it correct on my test sooo..yuup.!
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2) compound because the proportion of its atoms can vary
3) mixture because the proportion of its components is fixed
4) mixture because the proportion of its components can vary
Answer:
4) mixture
Explanation:
The answer is 4) because salt water has 2 properties which are salt and water. Never the less the amount of salt or water you keep adding the substance would always remain as salt water.
Answer:
14.1648 grams of oxygen gas will be left.
Explanation:
Moles of magnesium metal =
Moles of oxygen gas =
According to reaction, 2 mol of magnesium react with 1 mol of oxygen gas .
Then 2.5833 moles of magnesium will react with:
of oxygen gas.
Moles of oxygen left unreacted =1.7343 mol - 1.29165 mol = 0.44265 mol
Oxygen gas is an excessive reagent.
Mass of 0.44265 moles of oxygen gas:
0.44265 mol × 32 g/mol = 14.1648 g
14.1648 grams of oxygen gas will be left.
Explanation:
Molarity is defined as the number of moles per liter of solution.
Mathematically, Molarity =
Since it is given that the molarity of a solution of 14.0 g and volume is 150 mL or 0.15 L.
Whereas number of moles =
So, molar mass of is 97.94 g/mol.
Thus, number of moles =
= 0.142 mol
Therefore, calculate the molarity as follows.
Molarity =
=
= 0.946 mol/L
Hence, we can conclude that molarity of the solution is 0.946 mol/L.
The molarity of the solution is approximately 0.952 M.
To calculate the molarity of the solution, we need to convert the given mass of NH4Br to moles. The molar mass of NH4Br is 97.94 g/mol. So, 14.0 g of NH4Br is equal to 0.143 mol. Next, we convert the given volume of the solution to liters, which is 0.150 L. Finally, we divide the number of moles by the volume in liters to find the molarity.
Molarity (M) = moles/volume (L)
Therefore, the molarity of the solution is approximately 0.952 M.
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To dissolve a 3.94g copper penny, we would need approximately 331 milliliters of 1.50 M HNO3, taking into consideration the stoichiometry of the copper-nitric acid reaction.
Stoichiometry is required to solve this chemistry problem. The balanced equation for the reaction between copper and nitric acid is: 3Cu(s) + 8HNO3(aq) → 2NO(g) + 3Cu(NO3)2(aq) + 4H2O(l)
From this, we can conclude that every mole of copper reacts with eight moles of nitric acid. The molecular weight of copper is approximately 63.546 g/mole, so the moles of copper in an old penny can be calculated by mass (3.94 g) divided by the molar mass (63.546 g/mol).
This calculation shows that there are approximately 0.062 moles of copper in a penny. Since we determined that eight moles of nitric acid are required to react with one mole of copper, eight times the moles of copper gives the moles of nitric acid required, which is 0.496 moles.
Since molarity (M) = moles/liters, we can find out the volume of 1.50 M HNO3 required by rearranging the formula to be Liters= moles/Molarity. So, 0.496 moles divided by 1.50 M gives roughly 0.331 liters, which can be converted to approximately 331 milliliters.
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