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sergey [27]
3 years ago
15

Activity 2 Directions: Select among the choices thbest type of material to be used in making the objects at the left and explain

our answers. Write your answers in a separate sheet of paper. Translucent Transparent Opaque
QUICK ANSWER PLEASE







​

Chemistry
1 answer:
joja [24]3 years ago
3 0

Answer:

A Walk in the City

Make a list of the number of cars, jeeps, tricycle, and even trucks you've seen on your way to school. On a Decision Making Chart, answer the question, "Does the volume of traffic affect the air quality in my local community?" Write your reasons for saying YES on the Reasons for column, and the reasons for saying NO on the Reasons Against column. At the bottom of a chart, make a position by writing your decision on the same question.

Decision Making Chart

[question]

[reason for]

[reason against]

[my decision]

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What are the coefficients needed to balance this chemical reaction to show that matter is conserved?
777dan777 [17]

Answer:

B.

Explanation:

8 0
3 years ago
Read 2 more answers
Empirical Formula of P3O4H2?
puteri [66]

Answer:

H2 P4 O1. Explanation: In order to calculate the Empirical formula , we will assume that we have started with 10 g of the compound.

Explanation:

3 0
3 years ago
The heat released by one mole of sugar from a bomb calorimeter experiment is 5648 kJ/mol. The balanced chemical reaction equatio
Bogdan [553]

Answer:

The answer to your question is the letter C) 5648 kJ/mol

Explanation:

Data

                C₁₂H₂₂O₁₁  +  12 O₂  ⇒   12 CO₂  +  11 H₂O

H° C₁₂H₂₂O₁₁ = -2221.8 kJ/mol

H° O₂ = 0 kJ / mol

H° CO₂ = -393.5 kJ/mol

H° H₂O = -285.8 kJ/mol

Formula

ΔH° = ∑H° products - ∑H° reactants

Substitution

ΔH° = 12(-393.5) + 11(-285.8) - (-2221.8) - (0)

ΔH° = -4722 - 3143.8 + 2221.8

Result

ΔH° = -5644 kJ/mol

6 0
3 years ago
Define and describe each of the following forms of energy and then classify each as either: potential energy, kinetic energy, or
TiliK225 [7]

Potential energy:   It is an energy stored in an object due to its position.

Chemical energy: It is an energy stored in a bonds of a chemical compound and this energy is released during the reaction in the form of heat.

Elastic energy: It is a stored potential energy in an elastic object when subjected to any deformation or change in shape.

Gravitational energy : It is an energy possessed by an object due its position in a gravitational field.

Electric energy: Energy due to flow of charged particles. It is a type of a stored potential energy due to relative position of charged particle .

Nuclear energy  : it is an energy stored in a nucleus of an atom. This energy kept the particles present inside the nucleus binded together.

Static electricity: It is  an electricity which arises due to presence of imbalance in charge within or on the surface of the material.

Transfer of some quantity of energy:

Heat energy: Transfer or flow of energy from one object to another in form of heat. This transfer is due to difference in temperature of two objects.

Electromagnetic energy:  It is an form of energy emitted by the magnetic field and electric field vibrating perpendicular to each other while propagation of the electromagnetic wave. Energy transfer takes place in from of electromagnetic wave.

Sound energy  ; it is the energy produced by the vibration of sound waves. the energy transferred from one substance to another in form of sound wave.

Kinetic energy: Its an energy possessed by an object due its motion.

Movement of mass  : It is an energy which leads to movement of the mass of an object.

Thermal work : It is an energy posses by the body due to movement of the particles.

3 0
3 years ago
Read 2 more answers
A gas occupies 12.3 liters at a temperature of 40 K. What is the volume when the temperture is increased to 60 K?
Arte-miy333 [17]

Answer:

The answer to your question is  V2 = 18.45 l

Explanation:

Data

Volume 1 = V1 = 12.3 l

Temperature 1 = T1 = 40°K

Volume 2 = V2 = ?

Temperature 2 = T2 = 60°K

Process

To solve this problem use Charles' law

              V1/T1 = V2/T2

-Solve for V2

              V2 = V1T2 / T1

-Substitution

              V2 = (12.3 x 60) / 40

-Simplification

              V2 = 738 / 40

-Result

               V2 = 18.45 l

5 0
3 years ago
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