Answer:
The statement is false
Explanation:
Number of moles of alkene = 2.31 × 85/1000 = 0.196 moles
Number of moles of Br2 = 3.55 × 7.5/1000 = 0.0266 moles
Given that the reaction is 1:1
1 mole of alkene reacts with 1 mole of bromine
0.196 moles of alkene should react with 0.196 moles of bromine
Hence, to achieve 100%yield, 0.196 moles of bromine and not 25mmols of elemental bromine
Answer : The protons and neutrons subatomic particles will be located at Z.
Explanation :
In the model of an atom, there are three subatomic particles. Protons, neutrons and electrons are the subatomic particles.
The protons and the neutrons subatomic particles are located inside the nucleus and the electrons subatomic particle are located around or outside the nucleus.
The protons are positively charged, electrons are negatively charged and neutrons are neutral that means it has no charge.
In the given dartboard, Z is the nucleus in which the protons and neutrons subatomic particles are present and x, w & y are the electrons because they are located around the nucleus.
Hence, the protons and neutrons subatomic particles will be located at Z.
False: I believe if two atoms are in the same group it would not mean they have the same number of electron shells BUT it would mean that if the two atoms are in the same group they would have the same number of valence electrons.
Hoped this helped :)
Answer:
0.102 mol
Explanation:
Step 1: Write the balanced equation
PCl₅ + 4 H₂O ⇒ 5 HCl + H₃PO₄
Step 2: Calculate the moles corresponding to 7.36 g of H₂O
The molar mass of H₂O is 18.02 g/mol.
7.36 g × 1 mol/18.02 g = 0.408 mol
Step 3: Calculate the moles of PCl₅ required to react with 0.408 moles of H₂O
The molar ratio of PCl₅ to H₂O is 1:4.
0.408 mol H₂O × 1 mol PCl₅/4 mol H₂O = 0.102 mol PCl₅
Answer:
False
Explanation:
Mixtures are impure substances.
There are two types of mixtures based on the number of coexisting phases.
Homogeneous mixtures have their constituents existing in one single phase. The components are evenly spaced.
Heterogeneous mixtures have their constituents existing in at least two different phases. Therefore, they are unevenly spaced due to the phases present within the mixture.
