During this chemical reaction energy is absorbed. In the chemistry lab, this would be indicated by a decrease in temperature or if
the reaction took place in a test tube, the test tube would feel colder to the touch. Reactions like this one absorb energy because
A) the reaction requires activation energy.
B) the reactants have less potential energy than the products.
C)the reactants have more potential energy than the products.
D)the mass of the products is greater than the mass of the reactants.

Answer:

Activation energy :)

Explanation:

The activation energy starts the reaction! Without it, we would not find out the solution!

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The volume of hydrochloric acid, HCl produced from the reaction when 3.7 L of Cl₂ are used is 7.4 L

H₂ + Cl₂ —> 2HCl

Since the reaction occurs at standard temperature and pressure (STP), we can say that:

From the balanced equation above,

1 L of Cl₂ reacted to produce 2 L of HCl

From the balanced equation above,

1 L of Cl₂ reacted to produce 2 L of HCl

Therefore,

3.7 L of Cl₂ will react to produce = 3.7 × 2 = 7.4 L of HCl

Thus, the volume of HCl produced from the reaction is 7.4 L

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Answer:

Animals also contribute to mechanical weathering. Digging animals such as moles break apart rocks underground, while the movement of animals on surface rock can scratch the rock's surface or exert pressure that causes the rock to crack.

Explanation:

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Fuel shortages in the 1980s started the interest in fuel efficiency  best describes a society’s desire for fuel-efficient vehicles because of Iran- Iraq war.

The Iran-Iraq War in 1980 is the main cause of shortage of oil production. Iraq's and Iran's oil production dropped significantly which triggering economic recessions worldwide.

So that's why society’s desire for fuel-efficient vehicles in order to reduce consumption as well as reduce pollution.

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Answer:

Mammals do not have instincts, so they must learn all their behaviors from their parents in order to survive.

Sea turtles must survive on their own, while mammals spend time with their parents and learn how to survive as they grow.

Sea turtles are less intelligent than mammals and, thus, cannot learn new behaviors from their parents.

Explanation:

Sea turtles rely on instincts more than mammals do, beacuse to get food for their survival.

Insticts are the natural impulse or motivation which are present from the inborn time to perform some functions in order to react in some specific external stimuli.

Mammals do not react impulsively in any external conditions because they have members or friends from their famliy side, who will teach them how to behave or react. But turtles didn't have that special person, so they do work rely on instincts to get food or many other purposes.

Hence, to survive sea turtles rely on instincts more than mammals do.

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Here is a Answer to your question:

Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires. The solid and liquid particles suspended in our air are called aerosols.

Here are the 8 causes of air pollution?

1: The Burning of Fossil Fuels

2: Industrial Emission

3: Indoor Air Pollution

4: Wildfires

5: Microbial Decaying Process

6: Transportation

7: Open Burning of Garbage Waste

8: Construction and Demolition

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Suppose 5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

A balanced reaction is one where the reactants and products are present in equal amounts, and if the 100% reaction takes place, then the reactant sides have 1 mol of SbF₃ and 3 mol of CCl₄ that make the product of 1 mol of SbCl₃ and 3 mol of CClF₂. After the 100% reaction, all the reactants get converted into the product. The complete reaction is the below.

SbF₃ + 3CCl₄ → SbCl₃ + 3CClF₂

Hence, suppose  5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

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The genotypes are not found in the question, but p and q can be used to calculate genotypic frequencies by using the equation p2 + 2pq + q2 = 1.

The Hardy–Weinberg principle is a model used in population genetics to estimate allele and genotypic frequencies in a population.

According to the Hardy–Weinberg principle, the sum of p + q is equal to 1, where p and q represent the dominant and recessive alleles, respectively.

The Hardy–Weinberg principle considers the absence of different evolutionary forces acting on the population.

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The formula for calculating the probability of an offspring from a population having each of the following genotypes is p2 + 2pq + q2 = 1.

The number of people with a particular genotype divided by the total number of people in a population is known as genotype frequency.

p2 + 2pq + q2 = 1 is the Hardy Weinberg equation.

Thus, the formula for calculating the probability of an offspring from a population having each of the following genotypes is p2 + 2pq + q2 = 1.

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Answer:

Chlorine

Explanation:

Answer:

Single replacement is a reaction in which one element reacts with another compund to form another compound and another element.

planation:

If the reaction is double displacement then two molecules will be displaced and if it is single displacement reaction then only one element displaces.

Displacement reactions are those reactions in which any element of the given reactant will be displaced by any another element.

If only one element from the reactant molecules will displace then it will be known as single displacement reaction. If two elements or atoms will be displaced from the reactant molecules then it will be known as double displacement reaction.

Hence if one element displaceed then called the single displacement reaction and if two elements displaces then called as the double displacement reaction.

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Answer:

a

Explanation:

it will help stop frictoin

Germanium (Ge) has properties that are similar to silicon.

The molarity of a solution that has 0.05 moles of HCL are added to 2 L of H2O is 0.025M.

The molarity of a solution can be calculated using the following formula:

M = n/V

Where;

M = 0.05/2

Molarity = 0.025M

Therefore, the molarity of a solution that has 0.05 moles of HCL are added to 2 L of H2O is 0.025M.

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The amount of heat transferred in and out of the system is measured by calorimetry. The thermometer in the calorimeter is used to measure the temperature.

The thermometer (A) is a device used to measure the final and the initial temperature of the water or any other liquid in a system. A metal vessel is a place where the reaction mixture is present.

In-vessel (B), water, and metal are placed before the beginning of the experiment. The styrofoam cup or the outer metal vessel (C) insulates the instrument, from regulating the heat transformation.

Therefore, part A measures the temperature of the reaction mixture.

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Answer:

The acid reacts with the mineral to release CO2 gas that is bound into the crystal as carbonate ion.

Explanation: i got it corrcet

Long Answer:

Ionic: Cation is named first followed by the anion.

If it's an ionic compound with a transition metal, there are more than one possible ion. Molecular - named with the least electronegative ion first + prefixes are given to both ions to indicate number of atoms in each element.

Short Answer: Ionic compounds- Cation is named first, followed by the anion.

For a reaction  2Na + 2H2O --> 2NaOH + H2,  The moles of Na needed to produce exactly 5.6 liters of H2 is mathematically given as

moles of H2=0.125mole

Generally, the equation for the  Chemical Reaction is mathematically given as

2Na + 2H2O -> 2NaOH + H2(g)

Therefore, since 2Na gives 1H2

PV=nRT

Hence

n=PV/RT

n=1*5.6/0.0821 *273

n=0.249mols

In conclusion,The moles is

2Na=1H2

moles of H2=0.125mole

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Answer:

9.5

Explanation:

that the answer I hope am correct

Answer:

two electrons

Explanation:

Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon.

The second quantum number of a 3p₃ electron in phosphorus 1s2, 2s2, 2p6, 3s2, 3p3 is 3.

Quantum numbers are a set of numbers that describe the position and energy of an electron in an atom.

Principal, azimuthal, magnetic, and spin quantum numbers are the four types of quantum numbers.

Thus, the second quantum number of a 3p₃ electron in phosphorus 1s2, 2s2, 2p6, 3s2, 3p3 is 3.

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Answer:

D. a program on a computer

Explanation:

Answer:A single-replacement reaction is a chemical reaction in which one element replaces another in a compound. F₂ + 2NaCl → 2NaF + Cl₂, where F replaces Cl in NaCl. A double-replacement reaction is a reaction in which the metals in two ionic compounds exchange partners.

The concentration of NaOH that is used to completely neutralize is 0.25 Liters.

We will calculate the concentration in terms of molarity by using the below formula:

M₁V₁ = M₂V₂, where

M₁ = molarity of H₂SO₄ = 2m

V₁ = volume of H₂SO₄ = 0.25 L

M₂ = molarity of NaOH = ?

V₂ = volume of NaOH = 2 L

On putting all these values on the above equation, we get

M₂ = (2)(0.25) / (2) = 0.25 L

Hence required volume is 0.25 L.

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Answer:

Lithium has high melting and boiling point due to its small size, due to which it possesses high ionisation energy. As a result the binding energy in its crystal lattice is very high. This is why lithium has high melting and boiling point.

Explanation:

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Answer:

16.015668 M

Explanation:

Concentration is mols/L

nacl molar mass is 58.44277 g/mol

moles = mass/molar mass

moles = 4.00391699

4mol/0.250L = 16.015668 M solution

Answer:

3,550,000

Explanation:

3 significant figures is a number which has 3 figures

and zeros ( zero is not a figure )

Answer:

3550,000

Explanation:

Rounding rule:

If > 5 enter one

If < 5 rounding

Note:

< = less than

> = greater than.

Solve:

Base on the given:

it < 5 rounding

Thus,

3545,530 ≈ 3550,000

~Lenvy~

The value of Avogadro's number was obtained by dividing the charge of a mole of electrons by the charge of a single electron which is equal to 6.02214154 x 1023 particles per mole.

The most common used way is

There can be another derived way

Answer:

An acidic oxide reacts with water and produces acid. They are also called acid anhydride, which are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either nonmetal or of metals in high oxidation states. An oxide is a binary compound that we obtain upon the reaction of oxygen with other elements. Their chemistry can be systematically understood by taking an oxoacid and removing water from it until only an oxide remains. The resulting oxide belongs to this group of substances. Usually, it is the oxide of non-metals. For example, sulfurous acid (SO2), sulfuric acid (SO3), and carbonic acid (CO2) are acidic oxides. Thus, CO2 dissolves in water to give carbonic acid, and NO2 gives a mixture of nitrous and nitric acids. An inorganic anhydride (a somewhat archaic term) is an acid anhydride without an organic moiety.

Explanation:

Answer: 1. Ions

2. Cation

Explanation:

No explanation; this is basic vocabulary. :)

Answer:

The answer is (3) 1676 kJ. The heats of reaction at 101.3 kPa and 298 K for reaction: 4Al(s) +3O2(g)= 2Al2O3(s) is -3351 kJ. So for one mole of aluminum oxide is 3351/2=1676 kJ.