Chemistry Bingo Y10R

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created 2 years ago by Joel_Wheelwright
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Joel and Diego.
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chemistry
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1

4.1- What is the name of the compound SnSe2?

Tin (IV) Selenide

2

4.2- What would be the formula for Strontium (II) Permanganate?

Permanganate: MnO4

Answer:

Sr(MnO4)2

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4.3- Having in mind the general equation for this is Metal Carbonate + Acid --> Salt + Carbon Dioxide + Water, what would be the products of Magnesium Carbonate + Hydrochloric Acid?

x = unknown values

xMgCO3 + xHCl → xMgCl2 + xCO2 + xH2O

MgCO3 + HCl → (MgCl1 <- we need 2) + CO2 + H1 <- we need 2O

MgCO3 + 2HCl → MgCl2 + CO2 + H2O

MgCl 2 + CO 2 + H 2 O

4

4.4 - Change the ordinary symbol equation 2NaCl + Ba(NO3)2 → BaCl2 + 2NaNO3 into an ionic equation.

2Na+Cl- + Ba2+(NO3)22- → Ba2+Cl22- + 2Na+NO3-

2Na+ + 2Cl- + Ba2+ + (NO3)22- → Ba2+ + Cl22- + 2Na+ + 2NO3-

2Na+ + 2Cl- + Ba2+ + (NO3)22- → Ba2+ + Cl22- + 2Na+ + 2NO3-

2Cl - + (NO 3 ) 2 2- → Cl 2 2- + 2NO 3 -

5

5.1- How many Carbon-12 atoms and Carbon-13 atoms does it take do roughly balance out the mass of a normal Germanium atom?

5 Carbon-12 and one Carbon-13.

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5.2- What is the avogadros number or 1 mole?

6.022 * 1023

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5.3- In a reaction, which of the two reactants is the limiting reactant?

The one which is not in excess, since the reactants mole is less than half of tyhe overall molecule or product mole. When the limiting reactant is used up the reaction stops.

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5.4- What is the equation used to find the percentage by mass of an element?

- The mass of the particular element in one mole of a compound divided by one mole of that compound multiplied by 100.

- The sum of the relative atomic masses of an element or compund divided by the relative formula mass of the compound multiplied by 100.

9

What is dark matter?

It is an invisbile pice of matter made of unknown which is "dividing" the universe and slowly expanding.

10

What is strange matter?

A theoretical matter made of strange quarks. This could exist in the center of certain neutron stars - "Strange stars".