Chemistry High School

Any two difference between short sightedness and long sightednes​

Answers

Answer 1

Explanation:

tala it is also called myopia lekhnu hai

Äni Arko MA it is also called hypermetropia .

Any Two Difference Between Short Sightedness And Long Sightednes

Related Questions

what element has three valence electrons in the second energy level.​

Answers

Answer:

Boron

Explanation:

Hope that helps

Answer:

Boron.

Explanation:

2 energy shells

1st energy she'll 2 electrons

2nd energy shell 3 electrons

If something is up higher it will have ________________ potential energy.


the same


more


less

Answers

Answer:

More

Explanation:

HELP PLZZZZZZZZZZZZZ I WILL GIVE BRAINLIST!!!!!!!!!!!
If you place Alka -Seltzer tablets in a closed container of water, the tablets effervescence then produce a gas. What will eventually happen inside this closed container?

A. Not enough information to determine.
B. The pressure decreases.
C. The pressure increases.
D. The pressure remains the same.

Answers

Answer:

c the pressure increases

Emilio wants to tell a friend where an element's name is located within it's box in the periodic table. Which of the following is an accurate explanation to find an element's name?



the name is at the top of the box

the name is the large letter or letter combination in the box

the name is the word below the large letter combination in the box

the name is the last piece of information in the box

Answers

Answer:

A

Explanation:

hope this helps!

The name is the word below the large letter combination in the box

If you discover a new element, how would you know where it should go on the periodic table

Answers

Answer:

the atomic number

Explanation:

it would be in the upper corner

In the morning, Rafael notices that the Sun appears on one side of the sky. In the evening, he notices that the Sun appears to be on the other side of the sky. However, in class, Rafael learned that the Sun does not actually move across the sky from one side to another.

Why does it appear that the Sun starts the day on one side of the sky and ends the day on the other?
A.
The Sun spins.
B.
The Earth has two Suns.
C.
The Sun moves around the Earth.
D.
The Earth spins.

Answers

Answer: The earth spins while we also rotate around the sun the sun is well to us still when actually in reality the whole galaxy is moving but our planet spins and with it comes to night and day.

Explanation:

ehat is the name of the hydrate Ba(OH)2 8 H2O​

Answers

Answer: Barium hydroxide octahydrate

Explanation:

Which best explains why the atomic theory is a scientific one?
A. The theory was written by a famous scientist and has been around
for a very long time.
B. The theory describes what atoms are and has not changed over
time.
C. The theory explains many observations and is supported by a
large amount of evidence.
D. The theory represents a guess by many different scientists about
how atoms work.

Answers

Answer:

C

Explanation:

Answer:

it will option c it is perfect

HELP!!! ASAP!!!! WILL MARK BRAINLIEST!!!!






A certain covalent compound contains sulfur bonded to chlorine. Which of the following statements about this compound is correct?
Question 5 options:

A)

Electrons will reside closer to sulfur, and the bond will be non-polar.

B)

Electrons will reside closer to sulfur, and the bond will be polar.

C)

Electrons will reside closer to chlorine, and the bond will be polar.

D)

Electrons will reside closer to chlorine, and the bond will be non-polar.

Answers

Answer:

C) Electrons will reside closer to chlorine, and the bond will be polar

Explanation:

Electrons tend to be closer or attracted to high electronegativity and sulfur has less electronegativity than chlorine. Therefore, electrons will reside closer to chlorine. To find out if it is polar or nonpolar, according to the electronegativity chart you can find online, you can see that the electronegativity of sulfur is 2.5 while the electronegativity of chlorine is 3.0. Because the difference between these two is a slight change, it would be slightly polar. So, the bond will be polar.

Answer:

Electrons will reside closer to chlorine, and the bond will be polar.

Explanation:

ANSWER ASAP Which part of the picture shows evidence of matter scattering light waves in
many different directions?
O A. The color of the tree appears black against the sky.
O B. The image of the moon in the sky is incomplete.
OC. The image of the moon on the water's surface is distorted.
OD. The colors on the water's surface match the colors in the sky.

Answers

Answer:

The evidence of matter scattering light wave in many different directions is;

D. The colors on the water's surface match the colors in the sky

Explanation:

Light scattering is used to describe the sending of a given beam of light in many directions (by tiny particles) when the light passes through a medium, due to the disruption of the bath of the light ray as it bumps into the tiny particles

Water has the nature of absorbing the red light. The light that enters the water is scattered by the tiny particles in the water such that the blue light which is the spectrum of light water allows to pass through is reflected along with the reflection of the sky and the colors of the water surface match the colors of the sky.

Answer:

C.

Explanation:

I took the quiz

3. When substances cross cell membranes by simple diffusion, they
a. squeeze between phospholipid molecules.
b. have help from channel proteins.
C. move from a higher to lower concentration.
d. two of the above


Answers

Answer:B

Explanation:due to osmosis and osmoregulation of the cell membrane

which rock is the result of changes on the Earth's surface?

igneous rock
sedimentary rock
metamorphic rock

Answers

Answer:

metamorphic

Explanation:

when one rock changes another rock the rock that got changed is now metamorphic

PLEEEASSEEEE HELPPPPP!!!!!Take some time to research a utility plant. If there is one in your area, you may even visit it.
Otherwise, look up a type of plant that produces energy - such as a nuclear power plant, a
hydroelectric plant, or a coal-burning plant. Find out what energy resources are brought into the
plant. Then find out what energy and what "waste" is produced by the plant. Describe how the
two Laws of Thermodynamics apply to what you find out in your research. Be thorough. You will
be using the information you gather to engage in a debate with your class about
thermodynamics.

Answers

Answer:

There are four laws of thermodynamics that define fundamental physical quantities (temperature, energy, and entropy) and that characterize thermodynamic systems at thermal equilibrium.

Explanation:

What part does chlorophyll play in photosynthesis?
A. It transports sugar and water to plant leaves
B. It uses suns energy to “cook”water and carbon dioxide
C. It drinks water from the soil around the roots of the plant
D. Breathes the air around the plants and gets carbon dioxide

Answers

Answer:

B

Explanation:

it uses the process of the light reaction stage and Calvin cycle to trap sunlight in the day and make food at night

Answer:

I think the answer is A or B

USE LETTERS FOR ANSWERS, NO NEED TO EXPLAIN
a) Substitute symbols and formulas for words.
b) Predict the products. If no reaction occurs, write “NR” after the --> sign. c) Include abbreviations for the physical state.
d) Write out and balance the equation.

6. Mercury is poured into an aqueous solution of zinc nitrate.

7. Solutions of potassium iodide and lead (II) nitrate are mixed. The resulting lead compound is a precipitate.


thank you! :)

Answers

Answer:

Ok:

Explanation:

6a) [tex]Hg + Zn(NO_3)_2\\[/tex]

b) NR

c) [tex]Hg_{(l)} + Zn(NO_3)_2 {(aq)}=> NR[/tex]

d) Welp, no reaction so i don't know.

7a) [tex]KI + Pb(NO_3)_2[/tex]

b) [tex]PbI_2 + KNO_3[/tex]

c) All are aqeuous except for PbI2 which is solid

d) [tex]2KI _{(aq)}+ Pb(NO_3)_2_{(aq)} => PbI_2_{(s)} + 2KNO_3_{(aq)}[/tex]

Check if that is ok or if my work has any issues :).

To Identify a mineral, there are tests that are used including:

Answers

Geologists use the following tests to distinguish minerals and the rocks they make: hardness, color, streak, luster, cleavage and chemical reaction.

Although the order of elements is based on atomic number, vertical families share similar chemical properties.

Question 12 options:
True
False WHAT IS IT

Answers

Answer:

It's true

Explanation:

Uhhh, the internet! lol.

Answer:

It's true, ExplanationVVV

Explanation: Because the order of elements is based on atomic number, vertical families share similar chemical properties.

8. __H2 + __O2-> __H2O

9. __K2SO4 + __H2-> __H2SO4 + __K

10. __NO2 + __H2O-> __HNO3 + __NO

Answers

Anser:

Explanation:

hope this helps

Please help!! This would mean so much to me!!

Answers

Answer:

I think it's the A one. Hope it's correct

Answer:

A option is correct

Explanation:

2. The atomic number of an atom comes from *
The number of electrons.
The number of neutrons.
The number of protons.
Its atomic mass.

Answers

C. The number of protons

APE X What is happening to particles of matter while a change of state is taking place?
a. They are staying at the same speed
b. They are multiplying in number
c. They are slowing down
d. They are speeding up

Answers

Answer:

a. They are staying at the same speed

Explanation:

IF CORRECT PLSPLSPLS GIVE BRAINLIEST WOULD APPRECIATE :)

Answer:

a. They are staying at the same speed

The temperature of a city during a week was 35° C, 36°C, 34°C, 38°C, 40°C, 39°C and 44°C. What was the average daily temperature of the town for the week?

Answers

Answer:38°

Explanation:

At about what temperature does the sample change phase? Justify your
answer based on the cooling curve shown above.
A student states, “When the alcohol sample was at a temperature of 500 K, all the particles were moving faster than any of the particles were moving at
400 K" Do you agree or disagree with this student's statement? Justify your
answer.

Answers

Money cuzzo it to crazy

If the length, width, and height of a box are 9.50 cm, 6.75 cm and 3.50 cm, respectively, what is the volume of the box in units of milliliters and liters?

(a) How many mL will the box contain?

(b) How many L will the box contain?

Answers

Answer: 1cm³= 1mL

Explanation:

Help please I need it!

Answers

I think it’s V snowing

List the 3 particles of an atom (w/their symbol & charge)

Answers

Proton p      +1

Neutron n       0

Electron e-      -1

3. How many moles of H20 are in 15.2 grams of pure ice?

Answers

Answer:

18.01528 grams.

Explanation:

Ther are 0.84 moles of [tex]H_{2}O[/tex] in 15.2 g of pure ice.

The molar mass of [tex]H_{2}O[/tex] is 18g.

To calculate the number of moles of a substance in a given mass of the sample, we divide the given mass by the molar mass of the sample,

Number of moles = given mass / molar mass

It is given that we have 15.2g of pure ice. Then the number of moles of [tex]H_{2}O[/tex] will be:

n = 15.2/18

n = 0.84 moles.

Learn more about molar mass:

https://brainly.com/question/1855861

Carbon Monoxide is a toxic gas that is colorless and tasteless. How many moles of CO are in 1 L of the gas at STP?

28 moles

0.045 moles

22.4 moles

0.224 moles

Answers

Answer:

0.045 moles

Explanation:

Given data:

Moles of CO = ?

Volume of gas = 1 L

Temperature and pressure = standard

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

n = PV/RT

n = 1 atm× 1L / 0.0821 atm.L/mol.K × 273 K

n = 1 atm.L / 22.41 atm.L/mol

n = 0.045 mol

scientific notation, fill in the blank.

7.95x10^7 = [ ? ]x 10^6

Answers

Answer:

79.5

Explanation:

7.95x10^7 IS 79500000.

If you bring the decimal point left 6 more times it would be 79.500000

Density can be calculated by dividing an object's mass by its volume. If the mass of an object is 10 grams and its volume is 2 milliliters, what is its density?

Answers

Explanation:

mass =10g. volume=2ml. density=mass/volume = 10/2=5kg/m^3

Answer:

5 g/mL

Explanation:

So, if the mass is 10 g and the volume is 2 mL, the density equals...

10 g ÷ 2 mL = 5 g/mL

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Fill in the blank with their correct verbs (will BRAINLIST if correct). NEED ANSWER ASAP Which type of Symbiotic Relationship is described below?When two organisms interact with one another and one is benefited, and one isn't benefited or harmed. aMutualism bCommensalism cParasitism please help me with this!! I will mark brainliest! which of the following is not one of the five pillars of islam A. fast during RamadanB. belief in the holy trinityC. pray five times a dayD. give charity to the poor and needy 2 1/4w =6 3/4 answers pls hurry 2. This graph shows the solution for which inequality below?10 20 30 40 50 60 7080 90 100A. = 25B. 3x < 150c x 1002(A) A) ( c) D How did Stephen F. Austins arrest contribute to the start of the Texas revolution ? Question: please choose the noun that does not fit with the others.A) pencilB) houseC) JanuaryD) Ms. Davisplease provide an explanation too! thanks A submarine rises to the ocean's surface at 720 feet in 6 minutes. Find the points submarine's change in elevation per minute. PLEASE HURRY 15 POINTS the man who was president when the great depression began was_____he believed the government _______ in the economyhe_____ aid to unemployed workers he also _____ taxes on corporations If the temperature of a gas increased from 100 K to 200 K and the volume of a gas decreased from 20 L to 10 L, what is the new pressure if the original pressure was kPa? find the angle which y= equals to root 3 x -4 makes with yaxis Last year there were 205 ducks living on the pond. This year there are 20% more ducks living on the pond. How many ducks are living on the pond this year? * Pls pls help I dont have time HELP ASAP. It also detects if its right or wrong. Which of the following cities has caused the most damage to its coastline due to rapid urban development and tourismconstruction?A. BaghdadB. DubaiC. KabulD. Tehran(Edj 2021) I need help immediately!! The Treaty of Versailles did which of the following? Group of answer choicesheld Germany responsible for all material damageput Germany in debtall answers are correctlimited Germany's army to 100,000 How long is the rectangle? *A rectangle is 5cm longer than it is wide.The perimeter of the rectangle is 86cm.How long is the rectangle? A __________ is a required conversation to discuss the student's progress up to that point.Group of answer choicesMonthly CallWelcome CallDBAWeekly Update how do i do this please help!