Answer :
Molar mass is the total mass of a molecule. Every element has a specific weight, found in the bottom of it's box on the periodic table. In general you will want to round those values to the nearest whole number or nearest decimal - for example oxygen is 15.999 g/mole, but the standard weight used for it is 16g.
Let's start with something simple - CO2.
To find the weight of CO2, identify the weights of the elements that make it up, C & O. On the table, C is 12g/mole and O is 16g/mole. However, you have 2 oxygen atoms - so now you have to multiply 16x2, so oxygen weighs 32g.
32+12 = 44g/mole. Hence, CO2 has a molar mass of 44g.
Same thing with Mn(ClO3)2. Identify the elements -- you have Mn, Cl, and O.
How many of each do you have? Mn = 1, but you have 2 groups of ClO3, because it's in parenthesis. Therefore, you have 2 Cl, but 6 O.
Now find their weights and list them.
Mn = 55g/mole
Cl = 35.4g/mole x 2 --> 70.8
O = 16g/mole x 6 --> 96
Now just add it up!
55+96+70.8!
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I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
Let's start with something simple - CO2.
To find the weight of CO2, identify the weights of the elements that make it up, C & O. On the table, C is 12g/mole and O is 16g/mole. However, you have 2 oxygen atoms - so now you have to multiply 16x2, so oxygen weighs 32g.
32+12 = 44g/mole. Hence, CO2 has a molar mass of 44g.
Same thing with Mn(ClO3)2. Identify the elements -- you have Mn, Cl, and O.
How many of each do you have? Mn = 1, but you have 2 groups of ClO3, because it's in parenthesis. Therefore, you have 2 Cl, but 6 O.
Now find their weights and list them.
Mn = 55g/mole
Cl = 35.4g/mole x 2 --> 70.8
O = 16g/mole x 6 --> 96
Now just add it up!
55+96+70.8!
--------------------------------------------
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!