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G10 Physical Sciences 2025-01
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Calculate the concentation of in 20 dm3 of HCl if 8 dm3 of H2 (gas) of was formed at STP in the reaction below:
Zn + 2HCl ZnCl2 + H2
You will require a periodic table for this.
To make a solution with a concentration of 0,8 mol.dm-3 MgCl2 of 600 ml, you will need _____ g of MgCl2.
Choose the correct term for each of the following. Ensure that you have your periodic table available.
A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole. What is the molecular formula of this compound?
A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole. What is the molecular formula of this compound?
You will require a periodic table for this question.
Calculate the molar mass (in g.mol-1) of CaCO3.2H2O.
Here is a periodic table to assist.
What is the mass of 0,5 moles of CH3COOH?
Here is a periodic table to assist.
What is the mass of 0,5 moles of Ca(OH)2?
Here is a periodic table to assist.