HELP!!!!!!! THIS NEEDS TO BE DONE BY TODAY!!!!

Answer:

i think the answer is yess

Answer:

Limes, Lemons, Vinegar, Stomach acid, Batteries, Sour Candy, etc.

Nitric Acid, Chloric Acid, Carbonic Acid, Citric Acid, Perchloric Acid, Flouric Acid, etc.

Hope this helps!

Explanation:

Answer: B

Explanation: Valence electrons are the number of electrons out the outermost shell of the diagram. In this diagram, there is one valence electron. This means that it is highly reactive since the shell is not complete and needs other elements to be able to complete the outermost shell. If this model had a full outermost shell, then it would not be reactive (noble gases).

Answer: B

Explanation:This test it anoying.

Answer:

below

Explanation:

Insulators: wood, tire, glass cup, wool hat

Conductors: frying pan, penny, wire

Answer:

(ANSWER CHOICES ORDER MAY BE DIFFERENT FROM YOURS!!)

 A.  

The pollen from one flower is transported by an insect to the ovule of another flower.

 B.  

A potato plant produces a tuber, and the next year, a new plant grows from the tuber.

C.  

Part of the stem segment of a cactus plant falls off and begins to form a new plant.

D.  

A new shoot emerges from a strawberry plant and produces another plant.

Explanation:

It's "The pollen from one flower is transported by an insect to the ovule of another flower. " because i got it from study island

Answer:

15.27895 x 10⁶kg of chlorine radical is added to the atmosphere in a year due to 100 million MVACs                                                                                              

Explanation:

Chlorofluorocarbons (CF₂Cl₂) from refrigerants produce chlorine radicals according to the following equation

         CF₂Cl₂ → CF2Cl  + Cl ⁻ .........(1)

From equation 1, one mole of CF₂Cl₂ produces one mole of Chlorine radical

From the question,

The emission rate of CF₂Cl₂ is 59.5mg/hour/MVAC

In one day the emission rate would be 59.5 x 24hours

                                                                  = 1428mg/day

In one year, the emission rate would be 1428mg/day x 365days

                                                                 =  521220mg/year

                                                                   = 521.220g/year/MVAC

Therefore the emission rate for 100 million MVAC using CF₂CL₂ in a year is

                                                                    = 52122 x 10⁶g/year/MVAC

                                                                    = 52122 x 10³kg/year/MVAC

The molar mass of CF₂CL₂                       = 120.913g/mol

No of moles  of CF₂CL₂                              = mass/ molar mass

                                                                     = 52122 x 10⁶g / 120.913g/mol

                                                                      = 431 x 10⁶ moles of CF₂Cl₂

From equation 1,  since one mole of CF₂Cl₂ produces one mole of Chlorine radical, it implies that

431 x 10⁶ moles of CF₂Cl₂ would produce 431 x 10⁶ moles of chlorine radical,

Therefore, to find the mass of chlorine radical produced, we use the formula

No of moles of chlorine radical  = mass/ molar mass

431 x10⁶ moles = mass of chlorine radical /molar mass of chlorine radical

431 x 10⁶ moles = mass/ 35.45g/mol

mass of chlorine =  431 x 10⁶ moles x 35.45 g/mol

                            =    15278.95 x 10⁶ g

In Kg, the mass    =   15,278.95 x 10³kg of cholrine radical

                             =   15.27895 x 10⁶ Kg of chlorine radical

Answer:

increase

Explanation:

dont known reason burr answer is correct

Answer:

When temperature increases ,gas increases ,because of the rise in temperature evaporation will take place.

Explanation:

When you boil water to make coffee/tea the kettle/boiler releases the evaporation caused by the rise in temperature.

Answer:

Arsenic, As, has atomic number 33, which is the number of protons in the nuclei of its atoms. A neutral As atom would also have 33 electrons. The electron configuration of a neutral arsenic atom is [Ar]3d104s24p3

Explanation:

Flourine

Explanation:

The element F has a high negative (ΔeqHө) but not so high IE1 . Therefore, it is the least reactive non-metal.

Answer:

CaO[tex]_{s}[/tex]

Explanation:

 The chemical reactants are;

            Calcium metal = Ca[tex]_{s}[/tex]

             Oxygen gas  = O₂[tex]_{g}[/tex]  

 Now let us write the reaction:

     2Ca[tex]_{s}[/tex]   +  O₂[tex]_{g}[/tex]  →  2CaO[tex]_{s}[/tex]

The product is CaO in solid form.

This reaction is a combination or synthesis reaction in which two substances combine to give a single product.

Answer:

56 g of glucose

Explanation:

We can find the mass of glucose used as follows:

[tex] \%_{m/m} = \frac{m_{s}}{m_{sol}}\times 100 [/tex]   (1)

Where:

[tex]m_{s}[/tex] is the solute's mass =?    

[tex]m_{sol}[/tex] is the solution's mass = 2000 g  

% (m/m)= 2.8 %

By solving equation (1) for [tex]m_{s}[/tex] we have:

[tex] m_{s} = \frac{\%_{m/m}*m_{sol}}{100} = \frac{2.8*2000 g}{100} = 56 g [/tex]

Therefore, you used 56 g of glucose to make 2000 g of a solution of glucose in water.

I hope it helps you!    

Answer:

When the Ruler is bent the energy stored in it will be potential energy, When the ruler will be released this potential energy will be then converted into the Kinetic energy as a result the ruler will move Vibrations.

The energy conservation law can be applied here

K1 + U1 = K2 + U2

K1 - initial kinetic energy

U1 - Initial potential energy

K2 - final kinetic energy

U2 - final potential energy

Energy is known commonly as the ability to do work or move a matter. The type of energy that is stored is called potential energy.

if the ruler is released at the bent end, the object or pebbles on it will fly. If you hold two positive charges near each other, they have potential energy because they will move if you release them.

If the object released is fired straight up into the air, it begins with a high kinetic energy. As it rises, it slows down due to the force of gravity pulling it toward the earth.

Due to the release, the object place on the ruler rises, its gravitational potential energy is therefore increasing and its kinetic energy is decreasing.

When the object reaches the top of its arc, it kinetic energy is zero and its potential energy is maximum.

Then gravity still to pull the object down the earth and the object will fall toward the earth and just as it falls down, its speed increases and its height decreases.

So, its kinetic energy will thus increases as it falls and its potential energy decreases.

When the object has returns to its original height, its kinetic energy will be the same as when it started upward.

Learn more from

https://brainly.com/question/8964394

Answer:

francium

Explanation:

Atomic radii bary in a predictable across the periodic table.

The atomic radius elements increases down a group. Hence in the halogen group the last element in the group that is I have the largest radius.

Atomic radius is the distance is the distance from the nucleus to the valence orbital. The atomic radius depends on the electronegativity and number of electrons in the atom.

In periodic table, atomic radius decreases from  left to right because, the electronegativity that is the ability of atomic nucleus to attracts its electron increases and thereby the atoms shrinks.

Down a group the number of shells increases and thereby electrons are more screened from the nuclear attractive pulling. Therefore in the group from fluorine, chlorine, bromine and iodine, iodine has the less electronegativity and thus largest radius.

To find more on atomic radius, refer here:

https://brainly.com/question/14544878

#SPJ6

Answer:

Ernest Rutherford

Explanation:

The Rutherford model, proposed originally in 1911, dipicts a planetary model of the atom in which there is a nucleus and electrons circling it.

Answer:

Niels Bohr

Explanation:

Answer:

D. Malleability

Explanation:

Gold is made up of the element Au and it is a metal.

Pyrite is iron sulfide and it is a non-metal.

Answer:

C

Explanation:

Answer:

C - 3

Explanation:

This can be actually tested

Answer:

Option B. 261 KPa.

Explanation:

From the question given above, the following data were obtained:

Initial volume (V1) = 200 mL

Initial pressure (P1) = 110 kPa

Initial temperature (T1) = 275 K.

Final volume (V2) = 95 mL

Final temperature (T2) = 310 K

Final pressure (P2) =?

The new pressure (P2) can be obtained by using the following formula as illustrated below:

P1V1 /T1 = P2V2 /T2

110 × 200/275 = P2 × 95/310

22000 / 275 = P2 × 95/310

80 = P2 × 95/310

Cross multiply

80 × 310 = P2 × 95

24800 = P2 × 95

Divide both side by 95

P2 = 24800/95

P2 = 261 KPa.

Thus, the new pressure of the gas is 261 KPa.

Answer:

b and c

Explanation:

Because in a chemical change in order for a substance or matter to change shape it needs to either heat up or cool down

Answer: NaCN and HBr

Explanation:

Answer:

A. Gravity and Tension

Explanation:

Gravity and Tension would be the only things changing the rising speed of the elevator.

Normal makes no sense not sure why that is an answer.

Gravity effects how much Tension is pulling on the elevator to go down while the elevator is pushing up.

Let me know if you have any other questions.

Answer:

NH4)3PO4

this is a filler: jsjdkflflflsojsskksdnfkdod

Answer:

All three vehicles have the same kinetic energy because they have equal speed.

Answer:

B. Polar Easterlies

C. Sub polar low

D. Prevailing westerlies

E. Sub tropical high

F. Tropical easterlies

G. Inter tropical convergence zone

H. Tropical easterlies

I. Sub tropical high

J. Prevailing westerlies

K. Sub polar low

L. Polar easterlies

Explanation:

Answer:

temperature differences

Explanation:

Solar heating of the Earth's surface is uneven because land heats faster than water, and this causes air to warm, expand and rise over land while it cools and sinks over the cooler water surfaces. ... Wind is the result of pressure changes in the atmosphere.

Answer:

Gas.

Explanation:

Matter can be found in nature in three states: solid, liquid, and gas. The main difference between these three states is the separation of its molecules.

A solid has a definite form, its molecules are closely packed together and there is little to no movement between each molecule. When put in a container, it retains its form.

A liquid does not have a definite form, its molecules can move past another and they are not as close as in a solid, but it is not as loose either. When put in a container, it takes the shape of the container but it has a defined surface.

A gas does not have a definite form, its molecules are totally free from one another and the distance that separates them is much larger than the size they have. When placed in a container, they spread out completely and fill the entire shape of the container.

Answer:

False

Explanation:

Answer:

Atoms can gain, lose, or share electrons during a chemical change. Chemical changes do not affect the nucleus of an atom. For this reason, an atom has the ability to retain its properties or identity even if the number of electrons is different. Therefore, the atom's identity won't change.

Explanation:

Answer:

Shanika should move the orange coaster car to point B. This movement will result in the largest increase in potential energy. This is because the carts are repelling, which means to increase the potential energy you have to go against the magnetic field. Because the carts are being repelled from the centre magnet to go against the magnetic field you would move the cart closer to the magnet. In this case, moving the orange cart to point b would increase the potential energy greater than any other move.

Explanation:

what i meant in the last sentence was that moving the orange cart to b (closer to centre magnet) would end in a greater potential energy change than moving the other, green, cart closer. This is because of the distances between the carts and the centre magnet. Potential energy does not increase linearly meaning that if a cart is one cart is an inch away from the magnet and another is a foot, if you moved both magnets a cm closer to the centre magnet the one an inch away would have a larger potential energy change.