You need to neutralize 100. 0ml of a 2. 5 M solution of H2SO4. How many grams of KOH are needed

Answer:

C. The total energy remains the same as the rollercoaster moves

Explanation:

Energy is not created or destroyed it just transfers, so the amount of energy that the roller coaster has remains the same.

hope this helps!

As a roller coaster moves down the hill, potential energy is converted into kinetic energy, thermal energy, and sound energy. The total energy of the system remains constant; thus, the option “C” is correct.

“Energy can neither be created nor be destroyed” the statement given by Einstein forms the 1st law of thermodynamics. Energy remains constant but it changes its forms this is also called law of conservation of energy

In the following case when the roller coaster is at a certain height it contains potential energy, while coming down the potential energy gets converted into kinetic, thermal, sound energy

hence, the total energy of the system remains the same.

PE=KE+TE+SE  

Hence, the correct option is “C”

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One testable question is "How well do different materials sink or float in water?"

One non-testable question is "What makes something sink or float?"

The term "non-testable" is used because, from the perspective of correctness testing, there is no benefit to performing the test. If it is impossible to determine whether the output is correct or requires an unusually long amount of time to do so.

Something like "the ball falls to the ground because naughty invisible unicorns want it to" would be an untestable hypothesis. The theory that these unicorns are responsible for gravity is not scientific if they cannot be found using any scientific instrument.

Therefore, the questions are:

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Answer:

Fluorine:non-metal

Bromine:non-metal

Hydrogen:non-metal

Beryllium:metal

Nitrogen:non-metal

Since PbCl2 is insoluble, a precipitate will form when mixing 0.015 mol of NaCl and 0.15 mol of Pb(NO3)2 in a 1.0 L solution.

To determine if a precipitate will form, we need to check the solubility rules. In this case, we are interested in whether NaCl and Pb(NO3)2 will react to form any insoluble products. Here are the steps to determine that:

1. Write the balanced equation for the reaction:
NaCl (aq) + Pb(NO3)2 (aq) → NaNO3 (aq) + PbCl2 (s)

2. Identify the solubility rules:
- All nitrates (NO3-) are soluble.
- All sodium (Na+) salts are soluble.
- Chlorides (Cl-) are generally soluble, except for silver (Ag+), lead (Pb2+), and mercury (Hg2+) salts.

3. Apply the solubility rules to the products:
- NaNO3 is soluble because it contains sodium (Na+) and nitrate (NO3-).
- PbCl2 is insoluble because it is a chloride (Cl-) salt containing lead (Pb2+).

Since PbCl2 is insoluble, a precipitate will form when mixing 0.015 mol of NaCl and 0.15 mol of Pb(NO3)2 in a 1.0 L solution.

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Answer:

F=ma where F = force in N, m = mass in g and a = acceleration in \(m/s^{2}\)

Answer:

Explanation:

Dinitrogen pentaoxide is a nitrogen oxide.

...

3.1Computed Properties.

Property Name Property Value Reference

Formal Charge 0 Computed by PubChem

Answer:

he distance to a star can be found by comparing its luminosity to its apparent brightness.

Explanation: A star that is far away will be very dim compared to its luminosity. So it proves that  the ratio of its luminosity to apparent brightness will be greater than for a nearby star.

Answer:

but were is the answer

Explanation:

i am so confuesed

If X is an atom from the group 3 and Y is an atom from the group 6,  the most likely ionic formula is X₂Y₃.

The X is the atom from the group 3 and it will form the cation = X³⁺

The Y is the atom from the group 6 and it will form the anion = Y²⁻

To balance the charges, the 2X³⁺ cations and the 3Y²⁻ anions form the ionic formula. The ionic formula of the compound is as follows :

The ionic formula = X₂Y₃

This is called as the ionic compound, in which the compound is formed by the sharing of the electrons.

Thus, the ionic formula is X₂Y₃.

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The answer is 1.5 ounces.

Although the U.S. government has never declared an official measurement for this most states and bars use this amount for shots. Shots are used as part of happy hour drinks or in popular cocktail recipes. can be provided separately. Pubs and bars typically serve spirits in 25ml increments. This is roughly 1 unit of alcohol per unit.

But with many pubs and bars switching to 35ml or 50ml units these days, you may be drinking a lot of alcohol without realizing it. A portion is a measured amount of food or drink. B. A piece of bread or 1 cup of milk. Many foods presented as single servings actually contain multiple servings.

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Answer:

It  equals to the number of electrons in that atom, which is in turn equal to its atomic number

Explanation:

To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. Therefore, the balanced equation is

2C\(_2\)H\(_6\)(g) + 7O\(_2\)(g) → 4CO\(_2\)(g) + 6H\(_2\)O(g)

Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, displacement reaction.

C\(_2\)H\(_6\)(g) + O\(_2\)(g) → CO\(_2\)(g) + H\(_2\)O(g)

Multiply by 7 on reactant side and by 6 on product side to balance oxygen

C\(_2\)H\(_6\)(g) + 7O\(_2\)(g) → CO\(_2\)(g) + 6H\(_2\)O(g)

Now balance carbon and hydrogen

2C\(_2\)H\(_6\)(g) + 7O\(_2\)(g) → 4CO\(_2\)(g) + 6H\(_2\)O(g)

Therefore, the balanced equation is

2C\(_2\)H\(_6\)(g) + 7O\(_2\)(g) → 4CO\(_2\)(g) + 6H\(_2\)O(g)

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Answer:

2 vials

Explanation:

The concentration (C) of the drug in the solution is:

C= 500 mg/5 mL = 100 mg/mL

Each vial with a volume (V) of 10 mL, contains the following mass of drug:

V= 10 mL ⇒ C x V = 100 mg/mL x 10 mL = 1000 mg

As you need 2.00 g, and 1 gram is equivalent to 1000 mg, the mass needed is 2.00 g x 1000 mg/1 g = 2000 mg

Thus, you have to divide the mass you need into the mass of each vial:

(2000 mg)/(1000 mg/vial) = 2 vials

Therefore, you need 2 vials.

The proton is a postitive charge, therefore, being 1 (proton) matched to positive. Whilst neutron (2) is matched to neutral. Thus electron (3) is matched to negative.

Ramelteon is a hypnotic agent used in the treatment of insomnia. The molecular formula of this compound is C16H21NO2.

The molecular formula is the number of elements that are present in a compound. The molecular formula is calculated in terms of the empirical formula since the empirical formula is just the same or a multiple of the molecular formula.

The formula is :

              n=M/mass of the empirical formula

Where,

M is the molar mass and n is an integer.

For example, the molecular formula of Caffeine C8H10N4O2 and its empirical formula is C4H5N2O.

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Using evidence to support explanations is a good practice because it proves that what you are explaining can be verified.

the chemical equation will be XY2

The most likely cause of a high incidence of covalent bonds between thymine and other nucleotides in the DNA of skin cells of a patient is exposure to ultraviolet radiation.

Nucleotides are the basic molecules that are found in the DNA and RNA molecules.

The nucleotides are linked to each by means of phosphodiester bonds.

The nucleotides that are found in the nucleic acids are given below:

Mutations occur in these nucleotides when they are exposed to chemicals as well as ionizing radiation. Also, exposure to ultraviolet radiation affects the structure of the nucleotides.

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Aqueous potassium chloride will react with lead nitrate in an exchange (metathesis) reaction.

In a metathesis reaction, the positive and negative ions of two ionic compounds exchange partners. The key is to determine which reaction will result in the formation of an insoluble precipitate. When aqueous potassium chloride (KCl) reacts with lead nitrate (Pb(NO₃)₂), the exchange of ions produces lead chloride (PbCl₂) and potassium nitrate (KNO₃).

Lead chloride is an insoluble precipitate, while potassium nitrate remains soluble. Therefore, the metathesis reaction occurs between aqueous potassium chloride and lead nitrate. The other given compounds do not produce an insoluble precipitate when reacting with potassium chloride.

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Answer:

C=C divided by the co effiecient 11 would make the denominator of the photosynthesis equal 11 over 5 making this problem a polywhirl which wouldnt matter in the sense of the quake in energy change so thus making the answer 728 kJ/mol

Explanation: back in my day

Answer:

A pumpkin or a deer cus it's hunting season

Birds, Scenerys, Fish, Planets, Seas, Trees, Butterflys, BTS, Fruits, Cactus! Drawing Ideas: Imagination

Draw an object and give it a face.

Create an alternate cover to your favorite book or album.

Illustrate a scene from your favorite song.

Draw a scene or character from your favorite book.

Illustrate your favorite fairy-tale.

Invent your own insects.

Draw an intricate made up flower.

Hope this helps!

Answer:

280 kPa

Explanation:

P1V1 = P2V2

140 * 2.5 =  P2 * 1.25

P2 = 280 kPa

Answer:

they use echos to communicate

Explanation: dolphins make echos in order to signal there partners, and others in there pod. or they can use it to signal for prey, or signal that they are in trouble.

Answer: A good example for this one is bats.

Explanation: While a couple of bats are known to emanate the beats through their nose, most bats will in general express them. The recurrence is estimated to be around 200 heartbeats each second, nonetheless, the time frame can fluctuate with the types of a bat. Credits: Adi Ciurea/Shutterstock A bat's squeaks are more rewarding than Ben's on the grounds that with higher recurrence comes higher-goal or more distinctive detail – they are equipped for evading deterrents no more extensive than a human hair! They use it to find and explore towards prey, for example, a hurrying bug.   As the distinguished sound waves that structure the pictures are basically echoes, they should adjust to a standard — the recovered train of heartbeats should be sufficiently noisy to get back to the sender, yet short sufficient with the end goal that the reverberation of the sender returns before the following one withdraw.

Answer:

2L of nitrogen gas will be needed

Explanation:

Based on the following reaction:

N₂ + 3H₂ → 2NH₃

1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia.

If 6L of hydrogen (In a gas, the volume is directly proportional to the moles, Avogadro's law) react, the volume of nitrogen gas required will be:

6L H₂ * (1mol N₂ / 3 moles H₂) =

Answer:

its atomic number will be 3 and it's mass number will be 7. it is lithium

The energy of radiation exposure from dental X-rays per given weight is 272.5 μJ.

The dental assistant can respond to this patient's concerns by telling the patient that the amount of radiation coming from the x-ray is minimal and will have no negative effect.

Given,

mass = 54.5 kg

Radiation = 5 μSv

Now

Energy per kg = 5 μSv *10⁻⁶ Sv / 14 Sv * 1 J/Kg/ 1 Sv

Energy per kg = 5 * 10⁻⁶ J/Kg

Then,

Energy per given weight of 54.5 kg

Energy per given weight = (54.5 kg)*(5*10⁻⁶)

Energy per given weight = 272.5 * 10⁻⁶ J

Therefore, energy of radiation exposure from dental X-rays per given weight is 272.5 μJ.

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Answer: 6 electrons

Explanation:

This is the maximum number of electrons that can occupy the p sublevel (I just took notes on it).

The molarity of an aqueous solution containing 10.8 g of beryllium chloride is approximately 0.1 M.

To calculate the molarity of the solution, we need to first determine the number of moles of beryllium chloride present in the given mass. This can be done using the formula:

moles = mass / molar mass

The molar mass of beryllium chloride (BeCl₂) can be calculated by summing the atomic masses of beryllium (Be) and chlorine (Cl). Once we have the number of moles, we can calculate the molarity using the equation:

molarity = moles / volume

The volume can be determined by dividing the given mass of the solution by its density:

volume = mass / density

By substituting the values into the equations and considering the units, we find that the molarity of the solution is approximately 0.1 M.

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Answer: When the heavy rains affect the places that are about to harvest their crops, their crops are usually ruined by the heavy rains. The crops wont be of any use to the farmer.

It affects the livelihood of the people. Also it affects our economy as they wont be enough supply to the demands of the people.

Explanation: