are books on a table transparent ir opaque

Answers

Answer 1
Probably opaque if they can’t be seen threw
Answer 2

Answer:

no

hope this helps

:)

Explanation:


Related Questions

Burning 1 kg of coal releases about 3 million joules of energy. If you could use all of the chemical energy to lift another kilogram of coal, how high could you lift it?

Answers

I could lift 3.06 x 10⁵ m high

Further explanation

Energy is the ability to do work. Energy can change from one energy to another

Potential energy is the energy that an object has because of its position

The potential energy can be formulated:

Ep = m. g. h

E = potential energy of an object, joule

m = object mass, kg

g = gravity acceleration, m / s²

h = height of an object, m

energy of coal = 3.10⁶ J

mass = 1 kg

g = 9.8 m/s²

[tex]\tt h=\dfrac{E}{m.g}\\\\h=\dfrac{3.10^6}{1\times 9.8}=3.06\times 10^5`m[/tex]

A + ion (positive ion, one with extra positive charge)?

Answers

Answer:

If an ion has a positive charge then it has lost an electrons.

Explanation:

So you don't "gain" anything when the ion has a positive charge. It loses an electron which means it has more protons than electrons. Thus, the ion has a positive charge. If it "gained" an electron then it would have a negative charge.

As part of a chemistry experiment, Sam notes that the temperature at which liquid mercury
freezes into a solid is -102 Fahrenheit (F). The beaker of liquid mercury provided to him Is
at a room temperature of 68". By how many degrees will Sam have to cool the liquid
mercury for it to freeze into a solid?
-102"F
-34°F
102°F
170°F
o

Answers

Answer:

-34¨F

Explanation:

all living things need energy to survive The most common source of energy is organisms is glucose molecules which are used as food a plant food is no exception where do plants get the carbon needed to make glucose molecules during the process of photosynthesis.

A. From the ground

B. From the air

C. From the water

D. From the sun

Answers

Answer:

the answer is air

Explanation:

Answer:

B. From the air

Explanation:

What is the oxidation number of Gallium?

Answers

Answer: +3

Explanation: Gallium liquefies just above room temperature. Gallium is a soft solid, however it quickly becomes liquid when heated.

what bond is Mg3(PO4)2

Answers

The correct answer is:

COVELANT

One of the uses of methanol (CH3OH) in dilute form is as a windshield washer antifreeze. In pure form, methanol has a molar concentration of 24.7M. How many moles are contained in 500 mL of solution?

Answers

Mol of methanol =12.35Further explanation

Mole itself is the number of particles contained in a substance

1 mole = 6.02.10²³ particles

Mole : the ratio of the amount of substance mass and its molar mass

[tex]\large{\boxed{\boxed{\bold{mole=\frac{mass}{molar\:mass}}}}[/tex]

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]

Molar concentration of methanol=24.7 M

Volume of solution = 500 ml = 0.5 L

[tex]\tt mol=M\times V\\\\mol=24.7\times 0.5\\\\mol=12.35[/tex]

if a man could fall through a hole that passes through the center of Earth, gravity would cause him to:

A.Gain speed until he reached the other end of the tunnel.
B. Stop falling at the center of Earth.
C. Gain speed until he passed the center and then lose speed until he reached the other side.

Answers

I believe it would be C.
Although I am not sure because along with gravity friction would occur but this is the center of the earth so I am not completely sure but I really hope it helps :) if it’s wrong let me know

The orbital diagram shows the valence electrons of sulfur, which has 16 electrons. If the electrons were added to the atom one at a time, which would be the last electron to occupy an orbital?

Answers

Answer:

3px

Explanation:

The electronic configuration of sulphur is given as;

1s2 2s2 2p6 3s2 3px2 3py1 3pz1.

Recall that in accordance with Hund's rule, electrons occur singly first before pairing takes place during the filling of degenerate orbitals.

The last sub-level into which electrons are filled in sulphur is the 3p sub-level having three degenerate orbitals, 3px, 3py and 3pz.

According to Hund's rule, these levels are first singly filled before pairing begins. Hence the last electron in sulphur goes into the 3px orbital.

Answer:

3px

Explanation:

The electronic configuration of sulphur is given as;

1s2 2s2 2p6 3s2 3px2 3py1 3pz1.

Recall that in accordance with Hund's rule, electrons occur singly first before pairing takes place during the filling of degenerate orbitals.

The last sub-level into which electrons are filled in sulphur is the 3p sub-level having three degenerate orbitals, 3px, 3py and 3pz.

According to Hund's rule, these levels are first singly filled before pairing begins. Hence the last electron in sulphur goes into the 3px orbital.

Explanation:

How many total atoms are in the formula 2H2SO4

Answers

Answer:

In 2H2SO4, the number of hydrogen atoms is (1,2,4,8) the number of sulfur atoms is (1,2,4,8) and the number of oxygen atoms is (1,2,4,8)

Explanation:

I've done this problem before, but I did it a month or so back so I'm not 100% sure but I'm pretty sure this is the correct answer. Hope this helps!

Answer:2 hydrogen atoms 1 sulfur atom 4 oxygen atom

hope I helped!

What is each quantity of the length of a pencil

Answers

Answer:

In units of measurement of length we use centimeter (cm) to measure. We can use this unit for measuring the length of a pencil, the width of a book etc. but this unit is too big to measure the thicken of a pencil. So we use another unit called millimeter (mm).

Explanation:

A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?
OV
Na
Mg
Se

Answers

Answer:

Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Explanation:

The mass number is given at the top left of the elements symbol, for example, sodium has a mass number of 23.

Sodium (Na) square from the periodic table. The mass number (23) is top-left. The atomic number (11) is bottom-left.

We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons.

The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).

Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Which of the following is the least likely to remain homogeneous?
. O A. All of these
O B. A supersaturated solution
O C. An unsaturated solution
O D. A saturated solution

Answers

Answer:

all

of them

Explanation:

How many cesium atoms are in 21.9 grams?

Answers

The answer to the problem is 0.16477879575292056

What happens to a solute?
A. It gets dissolved in something else.
B. It settles out of the solution.
C. It forms a solid in the solution.
O D. Something gets dissolved in it.

Answers

The answer for this is a

A solute gets dissolved in something else. (solvent)

What is a solute?

A solute is a substance which dissolves in something else, like a solution. As a result, a homogeneous mixture is formed. A solute can be a gas, solid or a liquid.

What is a solvent?

A solvent is a substance in which a solute happens to dissolve in order to  produce a homogenous mixture. Solvents can also exist as solids, liquids as well as gases.
For example, NaCl is a solute which dissolves in water, which is a solvent. The equation is as follows
NaCl (aq) + H2O (l) → NaOH (aq) + HCl (aq)
Hence, option A is the correct option.
To learn more about solute and solvent here
https://brainly.com/question/7932885

#SPJ2

define atom and give an example

Answers

Answer:

Many atoms consist of a positively charged nucleus composed of protons and neutrons surrounded by a negatively charged cloud of electrons. At its most basic level, an atom is any particle of matter that contains at least one proton. ... Here are some examples of atoms: Neon (Ne) Hydrogen (H)

Explanation:

Two atoms in the same molecule are linked together by a
chemical ______

Answers

Answer: Chemical bond. Two atoms in the same molecule are linked together by a chemical bond. Write "bond" in the blank.

Two atoms in the same molecule are linked together by a chemical bond.

What is chemical bond ?

A chemical bond is defined as the formation of a chemical compound by the union of  two or multiple atoms, ions, or molecules, the firmness can be evaluated by the type of its chemical bond.

Ionic Bond is a type of chemical bond where relocation of electrons from one atom to alternative atom,  one atom creates a negative charge called as anion while another atom creates a positive charge called cation.

The covalent bond defines the distribution of electrons among atoms, it can be either polar or non polar in nature and the electrons are united unevenly in polar covalent chemical bonding.

Hydrogen Bonding is  a fragile procedure of chemical bonding, this type of polar covalent bonding occur between oxygen and hydrogen where  hydrogen develops a partial positive charge in the formation of the water.

Learn more about chemical bond , here:

https://brainly.com/question/12907148

#SPJ2

What is a graph?


A graph is a _______________________ representation of the relationship between two quantities.
_______________________ variable (manipulated)
Controlled by experimenter
_______________________________ variable (responding)
Something we observe as the result of the experiment

Answers

*Visual

*Independent

*Dependent

6.82

A 2.10-mole sample of crystalline acetic acid, ini-

tially at 17.0°C, is allowed to melt at 17.0°C and is

then heated to 118.1°C (its normal boiling point) at

1.00 atm. The sample is allowed to vaporize at.

118.1°C and is then rapidly quenched to 17.0°C, so

that it recrystallizes. Calculate AH° for the total pro-

cess as described.

Answers

Answer:

0 kj

Explanation:

melting/initial temperature = 17.0°c

boiling point = 118.1°C

pressure = 1.00 atm

2.10 mole sample of crystalline

attached below is the detailed solution required

consider an iron cube and an aluminun cube. If the two cubes were at the same temperature, how would the average kinetic energy of the particles in iron compare with the average kinetic energy of the particles in aluminun

Answers

Answer:

I think there would be no differences

Please help me with this I’ve been on this question for 10 minutes now...

Answers

Answer:

A

Explanation:

we know that pangea was when all the continents were connected and the tectonic plates moved, causing pangea to split into multiple pieces. so north america was formed by moving tectonic plates.

i hope this helps :))

For lunch you have a glass of sweetened ice tea. The glass contains crushed tea leaves, sugar, a slice of lemon, and both liquid and frozen water (ice cubes). Which of the following categories of matter best describes the contents of the glass? *

Answers

Answer:

I think solids

Explanation:

sorry if its not right

1.why does gravity exist?

2.what does the strength of gravity on?

3.what will have stronger force of gravity, jupiter or earth ?

This class is science !!

Answers

Answer:

Gravity exists because elementary particles (electrons, quarks, and neutrinos), are NOT static with time and expansion. Matter is dynamic; elementary particles must continually accrete energy (the quanta of space) in order to conserve the continually increasing angular momentum of the expanding universe.

Strength of gravity

9.80665 m/s 2

Jupiter

HELP QUICK What is the mass of an object that has a volume of 2 ml and a density of 10g/ml?

Answers

Answer:

The answer is 20 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 10 × 2

We have the final answer as

20 g

Hope this helps you

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground. What is the independent variable?

Answers

Answer:

Wing length

Explanation:

According to the given excerpt, independent variable is 'wing length' and dependent variable is 'amount of time it takes for helicopter to hit the floor'.

Independent variable refers to the variable that do not undergo any change or shift in the course of the experiment of research. The other variables are measured using the constant independent variable. The value obtained from the independent variable is independent. On the other and, the dependent variable witnesses change with respect to the independent variable.

CCC Energy and Matter Recall that force = mass x acceleration. Explain why the
acceleration of a model rocket increases over time, even if the force from the
burning of the rocket fuel remains constant.

Answers

Answer:

The mechanical device inside just gets the energy of the fuel and not the actual liquid.

Explanation:

The acceleration increases since the mechanical device is getting the energy of the fuel and not the fluid.

Just an idea

The information regarding the acceleration of a model rocket should be explained below;

The following information should be considered:

The mechanical device i.e. inside just gets the energy of the fuel but not the actual liquid.The acceleration increases because the mechanical device is getting the energy of the fuel however not the fluid.

Learn more: https://brainly.com/question/1979431?referrer=searchResults

Which statement about the layers would they identify as correct?

Answers

is there supposed to be a picture or something with this

When copper is bombarded with high-energy electrons, X rays are emitted. Calculate the energy (in joules) associated with the photons if the wavelength of the X rays is 0.154 nm.

Answers

Answer:

E = 12.92 × 10^(-16) J

Explanation:

Formula for energy is;

E = hc/λ

Where;

h is Planck's constant = 6.63 x 10^(-34) J.s

c is speed of light = 3 × 10^(8) m/s

λ is wavelength = 0.154 nm = 0.154 × 10^(-9) m

E = (6.63 x 10^(-34) × 3 × 10^(8))/(0.154 × 10^(-9))

E = 12.92 × 10^(-16) J

The energy associated with the photons of X rays with a wavelength of 0.154 nm is 1.29 × 10⁻¹⁵ J.

When copper is bombarded with high-energy electrons, X rays, with a wavelength of 0.154 nm (λ) are emitted.

We can calculate the energy (E) associated with the photons of these X rays using the Planck-Einstein relation.

[tex]E = \frac{h \times c }{\lambda } = \frac{(6.63 \times 10^{-34}J.s ) \times (3.00 \times 10^{8}m/s ) }{0.154 \times 10^{-9} m } ]= 1.29 \times 10^{-15} J[/tex]

where,

h: Planck's constantc: speed of light

The energy associated with the photons of X rays with a wavelength of 0.154 nm is 1.29 × 10⁻¹⁵ J.

Learn more: https://brainly.com/question/2058557

Please help ASAP I’ll make you u as brainlister please 100 points pelaseee

Answers

Answer:

(C) im pretty sure is the answer

Explanation:

Answer:

C

Explanation:

Calorimetry Gizmo

The answer for Calorimetry Gizmo this lab is hard to find answer but I just save you so yeah :)

Answers

Answer:

The answer is JEDDBDDD

Explanation:

Other Questions
Why were the Middle Colonies nicknamed "the breadbasket? What war gave the U.S. the southwestern area?Civil WarAmerican RevolutionMexican WarWar of 1812 If a recipe for one batch of cookies uses 5 cups of flour and 2 teaspoons of vanilla, how many teaspoons of vanilla would you use for 20 cups of flour? (Hint: Draw a double number line on a piece of paper to help identify an equivalent ratio.)Group of answer choices10468MATH 6TH GRADE The temperature at 6 a.m. was 12F. At 11 a.m. the temperature was 0F. Which of the following shows the temperature change from 6 a.m. to 11 am? can someone help me outthe views expressed in the passage illustrate which of the following important changes within the Christian religion between 1520 and 1750?The spread of Christianity throughout Western EuropeThe political authority held by Catholics throughout all of EuropeThe subdivision of Christianity into different sects within Western EuropeThe unity of Christian doctrine among Eastern and Western European nations Complete the following statements in a logical manner,using an expression with -avoir-Plssss help!!! Jefferson believed that freedom of religion and an individuals human rights are _____. Select all that apply. You have a friend who is always resolving to improve his grades, but who never seems to find time to study. Which of the following suggestions could help him overcome his time inconsistency and help him meet his goal. Instructions: In order to receive full credit, you must make a selection for each option. For correct answer(s), click the option once to place a check mark. For incorrect answer(s), click the option twice to empty the box. Set aside a sum of money that he will only be allowed to spend if he achieves the desired grade for the class. unchecked Make firm time commitments to meet with a study partner who depends on him showing up. unchecked Utilize a tutor who charges a fee only (or alternatively a higher fee) if he misses an appointment. unchecked Rewarding himself with some type of treat only after he has studied. A community center charges x dollars for a summer activity if individuals are signed up before the day of the activity. Individuals who sign up the day of the activity are charged a fee of x +0.20x dollars. Which expression also represents the fee for signing up the day of the activity, and what does it mean about the fee? I HAVE 2 MIN TO ANSWER THIS, HELP ME PLEASE HELP ME PLEASE HELP ME PLEASE HELP ME PLEASE HELP ME PLEASE HELP!!!!!!!!!!!!?!!!!!! Read the excerpt from Sinbad the Sailor.During the voyage we touched at several islands, where we sold or exchanged our goods. We were one day becalmed near a small island. As its appearance was inviting, we determined to dine upon it. But while we were laughing and preparing for dinner, the island began to move, and at the same moment the people in the ship called out that we were on the back of a monstrous whale. Some jumped into the boat, and others swam to the ship; but before I could get off the animal dived into the sea, and I had only time to catch hold of a piece of wood that had been brought from the ship to serve as a table.Which word helps readers determine when the island begins to move?duringaswhilebefore please answer the question!! Marking brainliest Will give brainliest!!!! In the diagram, mAngleFLI is 106, mAngleFLG = (2x 1),mAngleGLH = (x + 17), and mAngleHLI = (4x 15).Four lines extend from point L. They are lines L F, L G, L H, and L I.What is the measure of the smallest angle in the diagram?15293245 Will give brainliest if correct what is the discriminant of the quadratic equation: (multiple choice) which of the Following angle pairs are considered Vertical angles Fill in the blank with the correct word.beau-frrecadetdemi-frrefilledivorcstanteschienpouseveuve A toy store is having a sale. A video game system has an original price of $99. It is on sale for 40% off the original price. Find the sale price of the game system. Round to the nearest cent. Riskier investments can yield higher returns:A) but, are generally less expensive B)but, generally experience steeper downturnsC) so, you should invest all your money in high risk stocksD) none of the above what type of art would have been shocking years before the renaissanceb If 25.98 mL of 0.1180 M KOH reacts with 52.50 mL of CH3COOH solution, what is the molarity of the acid solution?