The number of moles in 82 grams of water is calculated by dividing the given mass (in grams) by the molar mass (in g/mol). Thus, the number of moles in 82 grams of water is 4.56 moles.
The number of moles in 82 g of water can be calculated using the molar mass of water. The molar mass of water is the sum of the molar masses of its constituent elements. Hydrogen has a molar mass of approximately 1 g/mol and oxygen has a molar mass of approximately 16 g/mol. Therefore, the molar mass of water is 18 g/mol. To calculate the number of moles in 82 g of water, we divide the mass by the molar mass:
Number of moles = Mass (g) / Molar mass (g/mol)
Number of moles = 82 g / 18 g/mol
Number of moles = 4.56 mol
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Answer:
The answer to your question is 1.51 moles of PBr₃
Explanation:
Data
moles of Br = 2.27
moles of PBr₃ = x
Balanced chemical reaction
2P + 3Br₂ ⇒ 2PBr₃
Reactant Element Products
2 P 2
6 Br 6
-Use proportions to find the answer
3 moles of Br₂ ------------------ 2 moles of PBr₃
2.27 moles of Br₂ ------------------ x
x = (2.27 x 2) / 3
x = 4.54 / 3
x = 1.51 moles
Answer:Identify one disadvantage to each of the following models of electron configuration:
Dot structures
Arrow and line diagrams
Written electron configurations
Explanation:
Answer:
Ionic
Explanation:
Step 1: Define
1s²2s¹ is Lithium (Li)
1s²2s²2p⁵ is Chlorine (Cl)
Step 2: RxN
2Li (s) + Cl₂ (g) → 2LiCl (s)
Step 3: Identify
LiCl is a metal and a non-metal bonded together. Therefore, it will be an ionic bond. The Lithium would transfer it's electron to Chlorine (since it wants a full outer shell 0f 8 and it currently as 7) and form a salt.
B. kidneys
C. stomach
D. small intestine
Explanation:
Substances with their density less than the density of water which is 1 g/cm³ will float on it whiles those greater than that of water will sink into the water.
From the question the density of the object is 0.8 g/cm³
Since it's density is less than that of water the object will float on water .
Hope this helps you
An object with a density of 0.8 g/cm3 will float in water because its density is less than the density of water, which is 1 g/cm3.
The question is asking whether an object with a density of 0.8 g/cm3 will float or sink in water. Floating and sinking are determined by the principle of buoyancy, which depends on the density of the object compared to the fluid (in this case, water) it is placed in.
Water has a density of 1 g/cm3. So, if the object's density is less than 1 g/cm3, it will float, if it's more it will sink. Since 0.8 g/cm3 is less than 1 g/cm3, an object with this density will float in water.
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