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V125BC [204]
3 years ago
7

Which substance would cool down faster concrete or iron

Chemistry
1 answer:
Olin [163]3 years ago
7 0
Personal experience from Ag Mech classes-Concrete cools faster than metal.
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Chemical equilibrium is reached when _____. hints chemical equilibrium is reached when _____. all of the reactants are converted
Aleonysh [2.5K]
Chemical equilibrium is a condition where the rate of product made is same as the rate of reactant made. Since the reaction to the left is same as the reaction to the right, so the amount of reactant and product will not be changed (doesn't mean that the amount is same, it just won't increase or decrease).
It's called equilibrium since there will be no change in their amount.
7 0
3 years ago
The relative formula mass (M) of a Group 2 metal carbonate is 197
Luda [366]

The relative atomic mass (Ar) : 137 and the element : Ba

<h3>Further explanation </h3>

The naming of chemical compounds is giving a special name to a compound that aims to facilitate the classification of compounds and facilitate the identification of a compound. The rules for naming chemical compounds have been determined by the IUPAC (International Union of Pure and Applied Chemistry)

This nomenclature includes the naming of ion compounds, covalent compounds, and polyatomic

The molar mass of a compound is given by the sum of the relative atomic mass of Ar  

M AxBy = (x.Ar A + y. Ar B)  

Group 2 metals have a +2 charge : M²⁺

So the compound of metal carbonate : MCO₃

Ar C = 12, O = 16

M MCO₃ = (1.Ar M + 1. Ar C+ 3. Ar O)  

\tt 197=1. Ar~M+1.12+3.16\\\\197=Ar~M+12+48\\\\Ar~M=137

The element with relative atomic masses 137 is Ba

So the compound : BaCO₃

8 0
3 years ago
22. Which of the following molecules or ions contain polar bonds?
nexus9112 [7]
I think we need more information
4 0
3 years ago
Read 2 more answers
If 10.0g of Al2(SO3) is reacted with 10.0g of NaOH, determine the limiting reagent
ehidna [41]

(10.0 g Al2(SO3)3) / (294.1544 g Al2(SO3)3/mol) = 0.033996 mol Al2(SO3)3 (10.0 g NaOH) / (39.99715 g NaOH/mol) = 0.25002 mol NaOH 
0.033996 mole of Al2(SO3)3 would react completely with 0.033996 x (6/1) = 0.203976 mole of NaOH, but there is more NaOH present than that, so NaOH is in excess and Al2(SO3)3 is the limiting reactant. 
3 0
4 years ago
Balance the equation below and use it to answer this question:
Svet_ta [14]

Answer:

2H2 + O2 -----> 2H2O

Not sure about the second question though.

8 0
3 years ago
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