CHEMISTRY HIGH SCHOOL

The best method to improve air quality is to

Answers

Answer 1
Answer: Stop littering and polluting
Answer 2
Answer: Hi There!

The best method to improve air quality? I'm going to do indoor. :P

•Circulate, Circulate

•Renovate Wisely

•Filter Refresher

•Common Scents

•Clean 

Related Questions

A substance has a mass of 360 g and a volume of 7.5 cm3. What is its density?a. 2700 g/cm3 c. 480 g/cm3 b. 270 g/cm3 d. 48 g/cm3
Which of the following pieces of laboratory equipment is not directly used to make measurements?a. test tubeb. graduated cylinderc. rulerd. thermometer
Which of the following pairs of items will be attracted by one another?A. A positively charged pith ball and a negatively charged glass rod B. Two positively charged pith balls C. A negatively charged pith ball and a negatively charged glass rod D. Two negatively charged pith balls
Which is true about fossil fuels? A. Coal and natural gas came from swamp environments, while oil came from open oceans. B. Coal came from swampy environments, while oil and natural gas came from open ocean environments. C. Coal, oil, and natural gas came from swamp environments. D. Natural gas and oil came from swamp environments, while coal came from open oceans.
Which answer best describes the potential energy diagram for a reaction that takes place in water, if the temperature of the surrounding water is lowered? a. the potential energy of the reactants is low; the potential energy increases gradually; it peaks, then decreases slightly. b.the potential energy of the reactants is high; the potential energy decreases gradually; then increases slightly. c. the potential energy of the reactants is low; the potential energy remains low; rapidly peaks, then rapidly falls. d. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.

At STP, 1.0 liter of helium contains the same total number of atoms as(1) 1.0 L of Ne (3) 0.5 L of Rn
(2) 2.0 L of Kr (4) 1.5 L of Ar

Answers

Answer: (1) 1.0 L of Ne

Explanation: According to Avogadro's law, 1 mole of every gas occupy 22.4 Liters at STP and contains avogadro's number 6.023* 10^(23) of particles.

Avogadro's Law: This law states that volume is directly proportional to the number of moles of the gas at constant pressure and temperature.

V\propto n   (At constant temperature and pressure)

Thus equal volumes contain equal number of atoms.

Hence, 1.0 liter of helium contains the same total number of atoms as

1.0 L of Ne at STP.
The answer is (1) 1.0 L of Ne. The gases under same condition with same volume have the same molar number. And the question is asking the number of atoms. Because the elements given all have same number of atoms when having same molar number.

Show a numerical setup for calculating the percent by mass of NaCl in the solution inbeaker 4.

Answers

Let's think about the solution first: it's composed of water (100 g) and 35.04 grams of NaCl  (in beaker for)

together it's 100+35.04=135.04

and NaCl in this solution is 35.04/135.04=25.95.

So the answer is 25.95
Mass Percentage Definition. Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%.
% mass = [( 35.04) / ( 100 + 35.04)] * 100
% mass = 25.95 %

What is the symbol for iron?
a. I
b. F
c. Ir
d. Fe

Answers

The symbol for iron is Fe. Iron is an element with an atomic number of 26 and belongs to the group of metals in the first transition series. It is the most common and known element in the Earth's crust. It is very abundant in rocky planets which includes the Earth.

In clinical brachytherapy, the supervision of radio elements and dose interpretation are performed by the therapeutic ____________________ (two words).

Answers

Answer:

Radiation oncologist.

Explanation:

Cancer is one of the most deadly disease and half of the world population died due to cancer every year. Cancer might occur due to the mutation in the genes that control the cell cycle.

The oncologist may be defined as the individual that has specialized in the cancer and its treatment. The different radiation might use to kill the cancerous cell and the radio elements are administered in the drugs used during the chemotherapy.

Thus, the answer is radiation oncologist.

Which of the following statements best describes why strong acids and strong bases are good electrolytes?. . A. Strong acids and strong bases make water less pure.. . B. Strong acids and strong bases combine to form salts.. . C. Strong acids and strong bases neutralize each other.. . D. Strong acids and strong bases completely dissociate in water.. .

Answers

Strong bases are good electrolytes because they completely "dissociate" in water. 

eleanor wants to show her class a comparison of melting rates between two different solids when he is applied why would a graph be more suitable than a table to show her data

Answers

Eleanor wants to show her class a comparison of melting rates between two different solids when heat is applied. A graph would be more suitable than a table to show her data because the she can see the trend line of the effects of melting than the table.
Other Questions
When molecules are joined I an ordered structure​
The tetragonal crystal system below possesses how many faces?2 faces 4 faces 6 faces 8 faces
Which equation best represents the process of photosynthesis ? A. 6CO2+12H2O-> light+C6H12O6+6O2+6H2O B.6CO2+12H2O+light->C6H12O6+6O2+6H2O C.C6H12O6+6O2+6H2O+light->6CO2+12H2O D.C6H12O6+6O2+6H2O->light+6CO2+12H2O
Which statement regarding significant figures is false? a. Zeros can be significant b. When multiplying, the answer is determined by the number of significant figures c. When adding, the answer is determined by the number of decimal places d. When dividing, the answer is determined by the number of decimal places e. The number 50,004 has five significant figures