CHEMISTRY HIGH SCHOOL

Why does the chemical reaction seen here obey the law of conservation of matter? a. because there are the same number of atoms of each element shown on both sides
b. because they both start and end with diatomic (two-atomed) molecules
c. because they both start and end with the same types of particles
d. because they both start and end with two sets of particles eliminate

Answers

Answer 1
Answer:

Why does the chemical reaction seen here obey the law of conservation of matter?

Answer:

  • Because there are the same number of atoms of each element shown on both sides

Explanation

  • As in chemical reactions, atoms bonds are break and new bonds are formed. As new substance are formed but overall they have same elements, no new elements come from outside or go to outside. In other words , rearrangement of atoms take place but number of atoms remained same.

                            NaOH + HCl -----> NaCl + H2O

  • As in above reaction there are the same number of atoms of each element shown on both sides .
Answer 2
Answer: The chemical reaction seen here obey the law of conservation of matter because there are the same number of atoms of each element shown on both sides. The answer is A. Thank you for posting your question here. I hope it helps. 

Related Questions

If the volume of a container is increased, the pressure of the gas in the container also increases (when the amount of gas and temperature are held constant).TRUE FALSE
Which description is NOT a characteristic of the nucleus of an atom? a. always contains the same amount of protons and neutrons b. contains uncharged particles c. positively charged d. accounts for most of the atom's mass
Which two factors must be equal when a chemical reaction reaches equilibrium?(1) the concentration of the reactants and the concentration of the products (2) the number of reactant particles and the number of product particles (3) the rate of the forward reaction and the rate of the reverse reaction (4) the mass of the reactants and the mass of the products
Which of the following requires an increase in kinetic energy?liquid ➡ solid gas ➡ solid gas ➡ liquid solid ➡ gas
How many times faster will oxygen gas diffuse than carbon dioxide

If an atom has an electron configuration of 2.8.2, what will it be most likely to bond with? A. One fluorine atom B. Two chlorine atoms C. None of these D. One arsenic atom

Answers

Answer:

B. Two chlorine atoms

Explanation:

This electronic configuration shows that the given atom is magnesium.

Electronic configuration of magnesium:

Mg¹² = 1s² 2s² 2p⁶ 3s²

There are two valance electrons of magnesium that's why it would react with two atoms of chlorine. Chlorine is present in seventeen group. It has seven valance electrons. It required just one electron to get complete octet. While magnesium needed to lose two electrons to get complete octet. That's why two chlorine atoms bonded with one magnesium atom. Thus both would get complete octet.

Mg + Cl₂  →   MgCl₂

What size container do you need to hold 0.0459 mol of N2 gas at stp

Answers

The size of the container needed to hold the gas is 1.03 L

Data obtained from the question

  • Number of mole (n) = 0.0459 mole
  • Pressure (P) = STP = 1 atm
  • Temperature (T) = STP = 273 K
  • Gas constant (R) = 0.0821 atm.L/Kmol
  • Volume (V) =?

How to determine the volume

The volume of the container needed can obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both side by P

V = nRT / p

V = (0.0459 × 0.0821 × 273) / 1

V = 1.03 L

Therefore, the size of the container needed is 1.03 L.

Learn more about ideal gas equation:

brainly.com/question/4147359

Answer:

The size of the container needed is 1,03 liters

Explanation:

We use the formula PV=nRT. The STP conditions correspond to 1 atm of pressure and 273 K of temperature.

PV=nRT V=(nRT)/P

V= (0,0459 mol x 0,082 l atm/ K mol x 273K)/1 atm= 1,0275174 liters

Why is water (H2O) considered the "universal solvent"?

Answers

It is considered as a universal solvent since most substances dissolve in water. And comparing it to other liquids, it is the one who dissolves a wide range of substances. Also, it is an important substance for every living thing.

The compound C3H6 can react with bromine. Write an equation for this reaction and name the product formed. State the visible change which accompanies the reaction.

Answers

Answer:

C3H6 + Br2 = C3H6Br2

The product formed is 1,2-dibromopropane.

The red-brown color of the bromine disappears, leaving a colorless liquid

Explanation:

C3H6 + Br2 = C3H6Br2

The product formed is 1,2-dibromopropane.

This is a direct addition reaction.  The one molecule of bromine (Br2) joins the organic compound C3H6 to form one molecule of C3H6Br2.

This seemed unlikely at first, but one must look more closely at the C3H6.  This is not a straight alkane (e.g., propane).  Propane has the formula C3H8:

  H3-C-C2-CH3

The molecule C3H6 is propylene (or propene).  It has a double bond between two carbons.

H3-CH-CH=CH2

The compound in the question is propylene.  When exposed to bromine, the carbon double bond breaks and a bromine atom is attached to each carbon:

   H3-CH-CH=CH2 + Br2 = H3-CH-CHBr-CHBr

When propene reacts with bromine, the red-brown color of the bromine is lost and the product is a colorless liquid.

The molar mass of CO2 is 44.01 g/mol. Which is the mass of 3.21×1025 molecules of CO2

Answers

Given:

Molar mass of CO2 = 44.01g/mol

3.21x10^25 molecules of CO2

Required:

Mass of CO2

Solution:

Avogadro’s number states that for every mole of atom, there are 6.023x10^23 units of atom. The units may be formula units, atoms. In here, you need to divide 3.21x10^25 molecules of CO2 to 6.023x10^23 molecules per mole.

 

3.21x10^25 molecules of CO2 / 6.023x10^23 molecules per mole = 53.30 moles CO2

53.30 moles CO2 (44.01g/mol CO2) = 2346 g of CO2

What type of chemical bond links the monomers in a polymer?

Answers

alkenes such as ethene have at least one double bond in their chains and these join to make a polymer called polyethene but alkanes like ethane have only single bonds 
Other Questions
An atom of sodium-23 (Na-23) has a net charge of +1. identify the number of protons, neutrons, and electrons in the atom. How did you determine the number of each type. Explain in completer s details.
Why are protons in an atom so important? Question 5 options: A. Protons determine the atoms' identity (type of element) and where it is located on the periodic table. B. Protons are bigger than all the other particles in an atom. C. Protons determine an atom's chemical properties and how it will react with other elements. D. There are more protons than electrons or neutrons in a neutral atom.
Which of the following is not an acid? HCl H2SO4 HNO3 NaOH
Explain how molecular size plays a role in the strength of intermolecular forces.