1.) The the following reaction is:
BaCO3 --> BaO + CO2
Decomposition reaction
Single replacement reaction
Combustion Reaction
Synthesis Reaction
Double replacement reaction
2.) When magnesium is burned in the presence of oxygen, it produces magnesium oxide according to the following chemical equation.
2Mg+O2->2MgO
If 3.45 grams of Mg are burned, how many grams of MgO are produced?
5.72
8.69
3.45
4.35
3.) When a molecule is separated into its component parts, it forms
compounds
atoms
protons
ions
I think the first one is Decomposition reaction i dont know the second one and i think the third one is ions??
what are your answers for me to check?
Decomposition is correct.
#3 see this. https://www.google.com/search?q=atoms+and+compounds&ie=utf-8&oe=utf-8&client=firefox-b-1
#2 is a stoichiometry problem.
1.) To determine the type of reaction, we need to analyze the reactants and products in the given equation. In this case, we see that a single reactant (BaCO3) is decomposing into two products (BaO and CO2). This indicates a decomposition reaction, where a compound breaks down into simpler substances. Therefore, the answer is: Decomposition reaction.
2.) To find the number of grams of MgO produced, we need to use the given equation's molar ratio. First, we need to convert the mass of Mg to moles by dividing it by the molar mass of Mg. Then, using the balanced equation, we can determine the molar ratio of Mg to MgO. Finally, we can convert moles of MgO to grams by multiplying it by the molar mass of MgO.
Using the equation: 2Mg + O2 -> 2MgO
Given mass of Mg = 3.45 grams
Step 1: Calculate moles of Mg
Molar mass of Mg = 24.31 g/mol
moles of Mg = mass of Mg / molar mass of Mg
Step 2: Determine the molar ratio
From the balanced equation, the ratio of moles of Mg to MgO is 2:2 or 1:1.
Step 3: Calculate moles of MgO
moles of MgO = moles of Mg
Step 4: Calculate grams of MgO
Grams of MgO = moles of MgO x molar mass of MgO
After performing the calculations, we find that 3.45 grams of Mg will produce 3.45 grams of MgO. Therefore, the answer is: 3.45 grams.
3.) When a molecule is separated into its component parts, it forms atoms. A molecule is made up of two or more atoms held together by chemical bonds. When these bonds are broken, the molecule is divided into its individual constituent atoms. Therefore, the answer is: atoms.