In the earth’s rest frame, two protons are moving away from each other at equal speed. In the frame of each proton, the other proton has a speed of 0.700 c.
What does an observer in the rest frame of the earth measure for the speed of each proton?

Ionic bonds are formed between metals and nonmetals, while covalent bonds are formed between two nonmetals.

An ionic bond is formed after two or more atoms donate or gain electrons to form an ion. An ionic bond occurs between a metal that donates electrons and a nonmetal that accepts electrons. Ions with opposite charges attract each other and form an ionic bond. The functions of the following bonds in the human body are shown below. Ionic bonding - the generation of electrical signals and their transmission.

Covalent Bond Holds together the building blocks of important molecules such as DNA. Hydrogen Bonds Hold strands of genetic material together. Only pure covalent bonds occur between identical atoms. Electrons are usually shared, but with a polarity, he spends more time on one atom than on another. Ionic bonds are formed between metals and nonmetals. A covalent bond is formed between two non-metals.

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Answer:

true

Explanation:

From what we know, we can confirm that the variations in colors are a mechanism intended to protect the plants from predators.

This can be observed throughout nature. Many poisonous organisms have evolved bright colors intended to be noticed. Over time, this has resulted in many predators avoiding prey with bright colors, in order to avoid the possibility of being poisoned.

Therefore, we can confirm that the variations in colors are likely a mechanism intended to protect the plants from predators.

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No, the weak base and its conjugate acid are not a good choice for making a buffer of pH 8.2, as their pKb of 6.3 is too far from the desired pH.

A buffer is most effective when the pH is within ±1 of the pKa (or pKb) value of the weak acid (or base) and its conjugate pair. In this case, the weak base has a pKb of 6.3. To compare it to the desired pH of 8.2, we need to first convert pKb to pKa using the relationship pKa + pKb = 14.

This gives a pKa of 7.7 (14 - 6.3). Since the difference between the desired pH (8.2) and the pKa (7.7) is 0.5, which is within the ±1 range, the weak base and its conjugate acid can form a buffer.

However, the buffer will not be very effective as the difference is close to the edge of the optimal range. A buffer system with a pKa closer to 8.2 would be a better choice for optimal buffering capacity.

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Answer:

large atoms have Valence electrons further from the nucleus and lose them more readily.

Answer:

3.Amine

Explanation:

The functional group that is always found in alkaloids (such as caffeine, nicotine, and pyreale) is the amine functional group.

However, some alkaloids may also contain other functional groups, such as amides.
The functional group that is always found in alkaloids (such as caffeine, nicotine, and pyrethroids) is the amine group. So, the correct answer is option 3. Amine. Alkaloids are a class of naturally occurring organic compounds that mostly contain basic nitrogen atoms. The amine functional group consists of a nitrogen atom bonded to one or more alkyl or aryl groups. Amides, on the other hand, are a different functional group that involves a nitrogen atom bonded to a carbonyl group.

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Answer:

Lighter, positively charged particles form at the top of the cloud. Heavier, negatively charged particles sink to the bottom of the cloud. When the positive and negative charges grow large enough, a giant spark - lightning - occurs between the two charges within the cloud.

Explanation:

Lighter, positively charged particles form at the top of the cloud. Heavier, negatively charged particles sink to the bottom of the cloud.

In electricity generation, a generator is a device that converts motive power (mechanical energy) into electric power for use in an external circuit.

Lightning is an electric current. To make this electric current, a cloud is needed.

When the ground is hot, it heats the air above it. This warm air rises. As the air rises, water vapour cools and forms a cloud. When air continues to rise, the cloud gets bigger and bigger. In the tops of the clouds, the temperature is below freezing and the water vapour turns into ice.

Now, the cloud becomes a thundercloud. Lots of small bits of ice bump into each other as they move around. All these collisions cause a build-up of electrical charge.

Eventually, the whole cloud fills up with electrical charges. Lighter, positively charged particles form at the top of the cloud. Heavier, negatively charged particles sink to the bottom of the cloud.

When the positive and negative charges grow large enough, a giant spark - lightning - occurs between the two charges within the cloud. This is like a static electricity sparks you see, but much bigger.

Hence, the positive and negative charges grow large enough, that a giant spark - lightning - occurs between the two charges within the cloud.

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Explanation:

the last CH2 should CH3

because the first and last carbons are bonded to three hydrogens

Answer:

0.5 mol of nitrogen gas.

Explanation:

18g of Magnesium in mol is equal to 18g/24 gmol-1 = 0.75 mol and 7g of nitrogen in mol is equal to 7g/14 gmol-1 = 0.5 mol,

Thus, When 18g of magnesium reacts with 7g of nitrogen it implies 0.75 mol of magnesium which reacts with 0.5 mol of nitrogen. :)

The number of moles of nitrogen gas which react with 18 g of magnesium

to form magnesium nitride compound is 0.5mol.

We need to find the number of mole for magnesium and nitrogen.

Mole= mass/molar mass

Magnesium= 18g/24gmol⁻¹ = 0.75mol of Mg

Nitrogen= 7g/14gmol⁻¹ = 0.5mol of N

This implies that when 18g of magnesium reacts with 7g of nitrogen it

means 0.75 mol of magnesium which reacts with 0.5 mol of nitrogen.

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The form of the volcano is determined by the rate and severity of eruptions, as well as the composition of the magma. Some volcanic eruptions are explosive, while others flow slowly. Eruptions might occur through a primary opening at the volcano's summit or through vents that arise on the volcano's slopes.

Magma is shaped via way of means of the partial melting of mantle rocks. As the rocks travel upward (or have water added to them), they begin to melt slightly. These little blobs of melt migrate upward and merge into bigger volumes that continue to travel higher.

They might congregate in a magma chamber or come straight up. Gas molecules in the magma come out of the solution and form bubbles as they rise, and the bubbles expand as they ascend. When the pressure from these bubbles becomes greater than the pressure from the surrounding solid rock, the surrounding rock cracks, enabling the magma to reach the surface.

Volcanoes may be located on both land and the ocean floor. When volcanoes erupt on the ocean floor, the expelled lava cools and solidifies, forming underwater mountains and mountain ranges. When volcanoes on the ocean floor grow large enough to rise above the water's surface, they form islands.

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Algunas acciones viables para utilizar los recursos ambientales de forma racional y con el objetivo de reducir la contaminación son:

Es fundamental para la preservación y mantenimiento del medio ambiente y la calidad de vida de las generaciones actuales y futuras. El desarrollo de acciones sostenibles promueve la protección del medio ambiente, los ecosistemas y los recursos naturales.

Por lo tanto, todas las personas e instituciones económicas pueden promover la sostenibilidad a través de prácticas fáciles de ejecutar que ayuden a preservar y proteger el medio ambiente.

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In the given illustration, Carbon is black, and Oxygen is red. The given reaction can be balanced by following the law of conservation of mass.The reaction can be given as:

CO + O2 → CO2

Here, CO and O2 are the reactants, and CO2 is the product.To balance the given equation, the coefficients can be placed before each substance present in the reaction.Here are the balanced coefficients required to balance the reaction illustrated: 2 CO + O2 → 2 CO2. Here, the coefficient 2 is required to balance both the reactants and products.

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Answer:

\(Amount\ of\ Grams = 0.2644 g\)

Explanation:

Given

Element: Sodium

\(Atoms = 6.92 * 10^{21}\)

Required

Determine the amount of grams

We start by solving for the number of moles

\(Moles = \frac{Sodium\ Atoms}{Avogadro\ Number}\)

\(Avogadro\ Number = 6.022 * 10^{23}\)

So, we have:

\(Moles = \frac{6.92 * 10^{21}}{6.022 * 10^{23}}\)

\(Moles = \frac{6.92 * 10^{21-23}}{6.022}\)

\(Moles = \frac{6.92 * 10^{-2}}{6.022}\)

\(Moles = 1.15 * 10^{-2}\) moles

Next, we calculate the amount of grams.

Mass per mol of Sodium = 22.98977g/mol

For \(1.15 * 10^{-2}\) moles of sodium

\(Amount\ of\ Grams = 1.15 * 10^{-2}\ mol * 22.98977g/mol\)

\(Amount\ of\ Grams = 1.15 * 10^{-2} * 22.98977g\)

\(Amount\ of\ Grams = 0.264382355 g\)

\(Amount\ of\ Grams = 0.2644 g\) (approximated)

Hence, there are 0.2644g of sodium in \(6.92 * 10^{21}\) atoms

The rule of BODMAS should be obeyed, thus

= (7.945 J + 82.3 J) - 0.02 J

= 90.245 J - 0.02 J

= 90.225J

= 56.0012m

500 g + 432 g + 2 g

= 934g

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Answer:

When the Zebra arrived they ate all the food so the Unionid mussels declined as they died from the lack of food. Causing the Zebra Zebra numbers to increase and Unionid numbers to decline.

Answer: 0.0876 decameters

Explanation:

10000 mm=1 dm

876/10000=0.0876 dm

Answer:

Conduct more trials

Explanation:

Theoretical Probability can be defined as what someone is expecting to happen

Experimental Probability on the other hand, is defined as what actually happens.

Probability is usually calculated in the same way for experimental probability and that of theoretical probability. You divide the total number of possible ways in which a particular outcome can happen, by the total number of outcomes itself.

In Experimental probability, the more times a probability is tried, it gets closer and even more closer to theoretical probability.

So, for the question, Jamie should improve the number of tries more, so as to get his experimental probability results to be closer to the theoretical probability result.

Answer:

A. He can increase the number of trials

Explanation:

NaHCO3 is can be mixed in solution with H₂CO3 to make a buffer.

Sodium bicarbonate (IUPAC name: sodium bicarbonate, commonly known as baking soda or sodium bicarbonate) is a compound with the chemical formula NaHCO3. It is a salt composed of a sodium cation (Na+) and bicarbonate anion (HCO3-). Sodium bicarbonate is a crystalline white solid that often looks like a fine powder. It has a slightly salty, alkaline taste similar to soda carbonate (sodium carbonate). The natural mineral form is Narcolite. It is a component of sodium bicarbonate and is dissolved in many mineral springs.

Sodium bicarbonate is an antacid used to relieve heartburn and acid indigestion. Doctors may also prescribe sodium bicarbonate to reduce the acidity of blood and urine under certain conditions.

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When the temperature of a fixed quantity of gas decreases and the pressure remains unchanged, the volume decreases.

This is used to express the amount of three-dimensional space enclosed by a closed surface.

Decrease in temperature of a fixed quantity of gas and constant pressure won't bring about any change in the volume which was why it was chosen as the most appropriate choice.

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Answer:

Table salt, also known as sodium chloride (NaCl), is a compound. A compound is a substance that is made up of two or more different types of atoms chemically bonded together. Sodium and chlorine are two different elements, but when they react, they form a new substance with its own unique properties, such as the characteristic salty taste of sodium chloride.

In other words, sodium and chlorine do not exist as sodium chloride in their natural state, but only when they chemically combine to form a new substance. Therefore, sodium chloride is a compound, not an element.

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The positions on the N-phenylacetamide ring that could undergo bromination are the ortho, meta, and para positions.

Bromination is an electrophilic aromatic substitution reaction, where a bromine atom is introduced to the aromatic ring. N-phenylacetamide has an amide group attached to the phenyl ring. The amide group is a weakly electron-withdrawing group due to resonance and inductive effects, making it a meta-directing group. However, it is not strong enough to completely prevent bromination at ortho and para positions.

Therefore, N-phenylacetamide can undergo bromination at all three positions, but the meta position is more likely due to the amide group's influence. It is important to note that the presence of a catalyst that can enhance the reactivity of bromine and influence the selectivity of the reaction. The positions on the N-phenylacetamide ring that could undergo bromination are the ortho, meta, and para positions.

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Total heat generated by 2 mole of TiO2(s) is 4.963kJ.

The amount of heat released in the reaction of 2.89 mol of TiO2(s) can be calculated using the following equation: q = nCΔT, where n is the number of moles, C is the specific heat capacity of TiO2, and ΔT is the change in temperature.

The specific heat capacity of TiO2 is 683. 697. J/kgK. and the change in temperature is is 25k. By plugging in the values and converting J to kJ,

q = 2.89 * 25 * 683.697

=> 4963.35

In brief, the amount of heat released by 2.89 mol of TiO2(s) is 4.963kJ.

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Complete question :

determine how much heat (in kj) of 2.89 mol of tio2(s) with a temperature difference of 25k

Answer:

51.9961 grams

Explanation:

Just did worksheet

Butane < acetone < 1-propanol  is a list of the compounds in order of increasing boiling points.

The intermolecular interactions between molecules in a compound play a major role in boiling point. Higher boiling temperatures are a result of greater intermolecular interactions, bigger masses, and less branching.

The highest boiling point is for HF. As we go from HF to HI, the van der Waals forces of attraction between all hydrogen halides get stronger.

Boiling point rises as the difference in electronegativity grows. Additionally, the bp grows as the molecule's size does. So the sequence is CO2, CS2, CCl4, and then H2O.

Van der Waals attraction and dipole-dipole attraction draw acetone molecules together.

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Answer:

B. Warm year round with lots of precipitation

Explanation:

GIVEN

Answer:

#Ar atoms = 1.47 x 10²²

Explanation:

PV = nRT => n = PV/RT

P = 8.80 X 10⁵ mmHg =  8.80 X 10⁵ mmHg/760mmHg·atm⁻¹ = 11.58atm

V = 137ml = 0.137 Liter

n = ? moles Ar = ? moles Ar x 6.02 x 10²³ Atoms Ar/mole Ar

R = 0.08206 L·atm/mol·K

T = 794K

PV = nRT => n = PV/RT = 11.58atm·0.137L / 0.08206L·atm/mol·K·794K

=> n = 0.0243mole Ar = 0.0244mole Ar x 6.02 x 10²³ atoms Ar/mole Ar

= 1.47 x 10²² atoms Ar

Answer:

A

Explanation:

Answer:

(i),(ii) and (iv)

Explanation:

Villi are finger-like outgrowths of the human intestine.

The main role of villi is to amplify surface area for rapid absorption of digested food. They have very tiny walls; the role of these walls is to pass digested nutrients through diffusion. These are directly connected to the blood vessels. Thus, the circulating blood can carry these nutrients away.

The correct answer is the first option.