CHEMISTRY HIGH SCHOOL

During all chemical reactions, mass, energy and charge are

Answers

Answer 1
Answer: conserved. if its absorbed then there will be no reaction.

Related Questions

3Pb(s) + 2H3PO4(l) →
Covalent bonding is when atomstransfer electrons drop electrons share electrons create electrons
Consider the following equation: 0.0136 g + 2.70 × 10-4 g - 4.21 × 10-3 g = ? How many digits to the right of the decimal point should be used to report the result?
Discuss the relationship between the structure of hydrocarbons and their properties of polarity and solubility. How does this compare to water?
How does ice rain and wind change rocks

A thermometer is in a beaker of water. Which statement best explains why the thermometer reading initially increases when LiBr(s) is dissolved in the water?(1) The entropy of the LiBr(aq) is greater than the entropy of the water.
(2) The entropy of the LiBr(aq) is less than the entropy of the water.
(3) The dissolving of the LiBr(s) in water is an endothermic process.
(4) The dissolving of the LiBr(s) in water is an exothermic process.

Answers

The statement best explains why the thermometer reading initially increases when LiBr(s) is dissolved in the water is the dissolving of the LiBr(s) in water is an exothermic process.

What is a thermometer?

A thermometer is an instrument that is used to measure the temperature of an object.

An exothermic process is in which the heat and energy is released in the outer system.

Thus, the correct option is (4) The dissolving of the LiBr(s) in water is an exothermic process.

Learn more about thermometer

brainly.com/question/24189042

#SPJ2
(4) The dissolving of the LiBr(s) in water is an exothermic process

Under which conditions of temperature andpressure does a real gas behave most like an
ideal gas?
(1) 37 K and 1 atm (3) 347 K and 1 atm
(2) 37 K and 8 atm (4) 347 K and 8 atm

Answers

Ideal gas law is valid only for ideal gas not for vanderwaal gas.  The correct option is option C that is at  347 K and 1 atm, the real gas will behave as ideal gas.

What is ideal gas equation?

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of ideal gas

V= volume of ideal gas

n =number of moles of ideal gas

T =temperature of ideal gas

R = Gas constant = 0.0821 L.atm/K.mol

If a real gas or vanderwaal gas wants to follow the above equation that gas has to be at high temperature and low pressure.

Therefore the correct option is option C that is at  347 K and 1 atm, the real gas will behave as ideal gas.

To learn more about ideal gas equation, here:

brainly.com/question/14826347

#SPJ2
(3) 347 K and 1 atm is the correct one because a real gas behaves most like an ideal gas at high temperature and low pressure.

Which diatomic molecule is formed when thetwo atoms share six electrons?
(1) H2
(2) N2
(3) O2
(4) F2

Answers

Answer: (2) N_2

Explanation:

1) H_2 is a diatomic molecule which is formed by sharing of two electrons between two hydrogen atoms.

2)  N_2 is a diatomic molecule which is formed by sharing of six electrons between two nitrogen atoms.

3) O_2 is a diatomic molecule which is formed by sharing of four electrons between two oxygen atoms.

4) F_2 is a diatomic molecule which is formed by sharing of two electrons between two fluorine atoms.
I believe the correct answer from the choices listed above is option 2. The diatomic molecule that is formed when the
two atoms share six electrons would be N2. It has five valence electrons, so it needs three more valence electrons to complete its octet.

PLS HELP What is chemistry?

Answers

Answer:

A branch of science

Explanation:

CHemistry is the investigation and studying substances and their reaction with other elements

Answer:

chemistry :-

A branch of science in which we. . study about chemical

in the chemistry we studied about. elements and compounds and their

composition and reaction

The equation below shows the decomposition of lead nitrate. How many molecules of PbO are produced when 11.5 g NO2 is formed?2Pb(NO3 )2 (s) → 2PbO(s) + 4NO2 (g) + O2 (g)

Answers

Answer is in the file below

True or False: Changes in states of matter indicate a chemical change.

Answers

False, changes in matter indicate a physical change.

Answer:

False

Explanation:

Changes in state of matter indicates a physical change. Always remember these learning tools:

For Physical Changes:  

S - Size, Shape, State

For Chemical Changes:

Odor  Color  Bubbles/Gas  Light  Temperature  Precipitate

Ol'    Country  Boys/Girls     Like         Their           Pickups

Hope this helps!!!❤️
Other Questions
According to the collision theory and the model created to explain the collision theory, why does a catalyst cause a reaction to speed up?It lowers the required activation energy. It increases the collisions per minute. It increases the average kinetic energy of the particles. It increases the kinetic energy and the collisions per minute.
Which three phenomena occur during a double-slit experiment and support the wave model of light? A. The light passes through the slit B. Bright areas appear on the screen C. Light bends around the edges of the slit D. Dark areas appear on the screen
The oxidizing agent in 2H2S + 3O2 → 2SO2 + 2H2O is
Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the following reactions: Reaction 1: N2 (g) + 3H2 (g) --> 2NH3 (g) Change in enthalpy: -91.8 kJ/molReaction 2: C (s, graphite) + 2H2 (g) --> CH4 (g) Change in enthalply: -74.9 kJ/molReaction 3: H2 (g) + 2C (s, graphite) + N2 (g) --> 2HCN (g) Change in enthalpy: +270.3 kJ/molInclude the following:The numerical answer with correct units.State which reactions, if any, you had to "Flip".State which reactions you had to multiply, if any, to get the correct amount of the compound.