Answer:
0.94 L
Explanation:
Step 1: Write the balanced reaction
2 Al + 3 Br₂ = 2 AlBr₃
Step 2: Calculate the moles of Br₂ required to produce 12 moles of AlBr₃
The molar ratio of Br₂ to AlBr₃ is 3:2. Then,
Step 3: Calculate the mass of bromine corresponding to 18 moles
The molar mass of bromine is 159.81 g/mol. Then,
Step 4: Calculate the volume of bromine corresponding to 2.9 × 10³ g
The density of bromine is 3.1 g/mL. The volume of bromine is:
Remember Tin isn’t Ti, it’s actually Sn and by looking at the periodic table you find it is 118.7 g
Answer:
I believe that is space i would check just to make sure tho
Answer:
Chemical change
Explanation: Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.
Answer:
%Cu = 66.4%
%S = 33.6%
Explanation:
Step 1: Given data
Step 2: Calculate the mass of S
The mass of CuS is equal to the sum of the masses of Cu and S.
mCuS = mCu + mS
mS = mCuS - mCu
mS = 9.56 g - 6.35 g = 3.21 g
Step 3: Calculate the percent by mass of each element
We will use the following expression.
%Element = mElement / mCompound × 100%
%Cu = mCu / mCuS × 100% = 6.35 g / 9.56 g × 100% = 66.4%
%S = mS / mCuS × 100% = 3.21 g / 9.56 g × 100% = 33.6%