Answer:
1. C.
2. A.
3. D.
4. C.
5. B.
Explanation:
1. A compound is formed when two or more atoms are put together through a chemical bond. When atoms share electrons, the type of chemical bond is called a covalent bond.
2. Characteristics of a chemical reaction is the emission of light, production of heat, and change in color of the substance. However, it should be noted that a change in color does not always mean that a chemical reaction occurred, but generally, it is common.
3. The scenario given is a chemical reaction. In a chemical reaction, there are reactants and product. When the reactants "react", they produce a product. In this case, the product is Sodium chloride.
4. According to the law of conservation of mass, in a chemical reaction, the mass of the reactants should be equal to the mass of the product. This means that the amount of atoms of each element put into a chemical reaction, should produce the same amount of each element. This is what we call a balanced equation.
5. Given the reaction, we can tell that there are the same number of atoms of each element in the reactant side and on the product side. Let's break it down:
Reactant Product
Na + Cl → NaCl
Na = 1 Na = 1
Cl = 1 Cl = 1
Because they are equal in number, the equation is balanced.
Answer:
The answer is compound because they consist of multiple things.
C. north to south because opposite feilds attract each other.
The correct answer is c. Temperature is the average kinetic energy of a sample so if two samples have the same temperature they will also have the same average kinetic energy. I hope this helps. Let me know if anything is unclear.
Answer:
The answer to your question is <u>111 g of CaCl₂</u>
Explanation:
Reaction
2HCl + CaCO₃ ⇒ CaCl₂ + CO₂ + H₂O
Process
1.- Calculate the molecular mass of Calcium carbonate and calcium chloride
CaCO₃ = (1 x 40) + (1 x 12) + ((16 x 3) = 100 g
CaCl₂ = (1 x 40) + (35.5 x 2) = 111 g
2.- Calculate the amount of calcium chloride produced using proportions.
The proportion CaCO₃ to CaCl₂ is 1 : 1.
100 g of CaCO₃ ------------- 111 g of CaCl₂
Then 111g of CaCl₂ will be produced.
