Air Pollution Quiz - Match the terms e defintions
1) Air pollution
2) Acid rain
3) Smog
4) Ground level ozone
5) Global warming
6) Greenhouse effect
Answer:
1) F. harmful gases and solid particles that enter the atmosphere
2) C. pollutant gases react with water vapor
3) B. mixture of smoke, gas, and fog
4) E. sunlight interacts with pollutant gases
5) A. gradual increase in the overall temperature of the earth
6) D. gases are trapped by heat and raise the temperature of the atmosphere
hope this helps
Al+hcl=alcl3+H balance
Answer:
Explanation:
Kindly answer the way I have written.
A 100.-gram sample of H2O(l) at 22.0°C absorbs 830. joules of heat. What will be the final temperature of the water?
Answer:23.976
Explanation:830j = 197.6 cal. 197.6/100g=1.976 degrees. plus 22 degrees =23.976
Select the correct answer.
What is the chemical name of the compound Ti2O3? Use the list of polyatomic ions and the periodic table to help you answer.
A.
titanium oxide
B.
titanium(II) oxide
C.
titanium(III) oxide
D.
titanium trioxide
Answer:
titanium(III) oxide is the name of Ti2O3
State, in terms of the strength of intermolecular forces, why 12 has a higher boiling point than F2
Answer:
See explanation
Explanation:
The greater the relative atomic mass of an atom the more polarizable the atom is.
Also, the magnitude of dispersion forces depends on the molecular mass of the compound.
We must remember that both I2 and F2 are nonpolar molecules that are purely held together by dispersion forces.
Hence, I2, having the greater molecular mass and surface area experiences a greater magnitude of dispersion forces and consequently has a higher boiling point than F2.
How many grams are there in 3.4 x 10^24 atoms of He?
Group of answer choices
2.07
5.7 g
0.57 g
20.7
Given :
Number of He atoms, [tex]n = 3.4\times 10^{24}[/tex] atoms.
To Find :
How many grams are their in given number of He atoms.
Solution :
We know, molecular mass of He is 4 g. It means that their are [tex]6.022 \times 10^{23}[/tex] atoms in 4 g of He.
Let, number of gram He in [tex]3.4\times 10^{24}[/tex] atoms is x , so :
[tex]x = \dfrac{3.4\times 10^{24}}{6.022\times 10^{23}}\times 4\\\\x = $$22.58\ g[/tex]
Therefore, grams of He atoms is 22.58 g .
What would the name of the following compound be:
Answer:
ammonium phosphite
Select the correct answer.
In which reaction is precipitation occurring?
A.
MgCl2(aq) + CuSO4(aq) → CuCl2(aq) + MgSO4(aq)
B.
CdSO4(aq) + K2S(aq) → CdS(s) + K2SO4(aq)
C.
NaOH(aq) + NH4Cl(aq) → NaCl(aq) + NH4OH(aq)
D.
K2SO4(aq) + NaOH(aq) → K2OH(aq) + NaSO4(aq)
E.
HNO3(aq) + KOH(aq) → KNO3(aq) + H2O(l)
Answer:
B. CdSO4(aq) + K2S(aq) → CdS(s) + K2SO4(aq)
Explanation:
A precipitate reaction is when a solid forms, so in this case CdS is the precipitate.
Which action could cause a sample of liquid to boil?
A. Decreasing the temperature of the liquid
B. Decreasing the sample size of the liquid
C. Decreasing the pressure on the liquid
D. Decreasing the volume of the liquid
Hurry please
Answer:
B
Explanation:
Decreasing the sample size of the liquid
hope it helps!
please help
find the percent composition of Li2O , round to the tenths place
Stoichiometry :
2 AlCl3 + 3 MgSO4 --> Al2(SO4)3 + 3 MgCl2
If 633.1 g AlCl3 reacts, how many moles of MgCl2 are formed?
What charge does a covalent bond have?
What label is missing from the apparatus below?
PlS ANSWER I Will GIVE BRAINLY TO First!!
Answer:
spatula I guess ..........
Answer:
ur mom
Explanation:
ha jkbhssjsjsjueueueehshshsshshhssebbbehwhhshshs
Why does my hand get cold when I pick up a snowball?
Answer:
Cause snow is cold.
Explanation:
THANK YOU
What type of Chemical is Pb?
Answer:
Explanation:
That is the symbol for the element lead
Which electromagnetic wave has the shortest
wavelength? Describe the energy level and
frequency of this wave.
Answer:
The electromagnetic spectrum
Explanation:
ranges from gamma (γ) radiation, which has the shortest wavelength, highest frequency, and greatest energy
I will give brainliest and so many points
Answer:are there any answer option? cause i know but i have to make sure
Explanation:
When solid materials are heated.the heat absorbed/added to the materials caused the materials to change its form
Complete question is;
When solid materials are heated.the heat absorbed/added to the materials caused the materials to change its form from?
Answer:
From solid to liquid
Explanation:
When we heat solid materials, the heat causes the forces of attraction between the molecules to become weaker and as such, the material becomes more loose than it was in the solid state. As a result, the material now becomes a liquid because the molecules now have lesser forces of attraction and are a bit loose.
Explain the similarities and differences between putting a beaker of ethanoic acid in the refrigerator and mixing it with sodium carbonate
Answer:
See explanation
Explanation:
When a beaker of ethanoic acid is placed in the refrigerator, its temperature drops and the vessel feels cool.
Now, when we mix ethanoic acid and sodium carbonate, an endothermic reaction occurs, fizzing is observed as carbon dioxide is given off and heat is lost to the surroundings causing the reaction vessel to feel cool to touch.
The difference between putting ethanoic acid in the refrigerator and adding sodium carbonate to the solution is that, in the former, no new substance is formed. The substance remains ethanoic acid when retrieved from the refrigerator. In the later case, new substances are formed. The substance is no more ethanoic acid because a chemical reaction has taken place.
Small pools of water with ocean life.
One day, while walking along the coast, you encounter the area pictured here. You notice that most of the water is gone at low tide and that an abundance of life lives in this area.
To which ocean zone does this area belong?
Answer:
Intertidal zone (i think)
Explanation:
Answer:
A
Explanation:
b
Lau
C)
Why is sulphuric acid kept in the glass bottle? in fire extinguisher
Answer:
A glass bottle kept inside the container has sulphuric acid in it. When the knob of the extinguisher is pressed, the bottle breaks. The acid comes in contact with sodium carbonate and carbon dioxide is produced. The carbon dioxide comes out through the nozzle which is directed towards the fire.
If both parents have on dominant gene and one recessive gene, what is the ratio of children
that will exhibit the dominant gene?
Answer:
the child would have a 1 in 2 chances of having a dominant gene
Explanation:
Parent 1 Parent 2
d d
r r
child
d
d= dominant
r= recessive
Which of the following statements explains how the fossil record provides evidence that evolution has occurred?
Question 1 options:
A. The fossil record shows how the offspring of many different species are very similar
B. The fossil record shows the exact cause of physical and behavioral adaptations of organisms
C. The fossil record includes fossils of every organism that has ever lived
D. The fossil record shows how related organisms changed through evolution
How many moles of H2 gas are in 15 liters?
A student dissolved a small amount of baking soda in water and tested it with paper. The litmus paper turned blue. Is baking soda likely an acid or a base?
Answer:
The correct answer is - alkali or base.
Explanation:
The litmus paper test is used to find whether a solution is basic or acidic. In a litmus paper test, a litmus paper is a dip in a particular or desired solution that turns the color of litmus paper to red, blue, or purple based on the pH of the solution.
If the paper turns red it means the solution is acidic, in a neutral solution it turns to the purple color and if the blue color appears then it is a basic or alkali solution. The solution of baking soda turns litmus paper into blue color which means baking soda is most likely a base.
help for brainlist and extra points!!
Answer:
Explanation:
c.
N4P10
There are ____________ phosphorus atoms
Pl help it’s for a grade I will give Brainly if right
Answer:
A. moving
Explanation:
Which statement describes why the viscosity of water is lower than that of
olive oil?
A. The molecules that make up water have more kinetic energy than
the molecules that make up olive oil.
B. The molecules that make up water can more easily slide past one
another than the molecules that make up olive oil.
C. The molecules that make up water have less kinetic energy than
the molecules that make up olive oil.
D. The molecules that make up water are larger than the molecules
Answer:
Option B. The molecules that make up water can more easily slide past one another than the molecules that make up a olive oil.
The molecules that make up water can more easily slide past one another than the molecules that make up olive oil. Hence, option B is correct.
What is viscosity?Viscosity is a term used to describe FLUIDS, which includes liquids and gases. Viscosity refers to the ability of a gas or liquid to resist flow.
Olive oil has a higher viscosity than water because it is a much larger molecule than water with larger dispersion forces.
Hence, option B is correct.
Learn more about viscosity here:
https://brainly.com/question/18906124
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What is a reactant?
A- Solid particles that have been separated from a solution
B- A substance that has the ability to be dissolved by a solvent
C- A mixture in which a solid and a liquid or two liquids are mixed occurs
D- The substance present before a chemical reaction occurs
Answer:
it is D
Explanation:
because it is a substance that participants in a chemical reaction.
