increasing concentration of dissolved co2 raises the of ocean water. group of answer choices basicity fertility salinity acidity turbidity

Propane gas partial pressure is 300 mm.

Propane gas reaction - C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)

As propane gas is a three-carbon alkali. It has a standard temperature and pressure. It can be compressed into a transport liquid. As per, the gas reacts with the air that is oxygen and gives carbon dioxide. We mix it with the correct ratio then the pressure mix is equal to 300 mm.

The answer is a partial pressure of propane gas 51mmHg and a part of the oxygen gas to be 249 mm. The propane gas is mixed with the oxygen gas and the gas reacts to give out carbon dioxide and thus measuring their correct stoichiometric ratio.

The gas produces a total pressure mix of 300 mg Hg and thus partial pressure is around 51 and that for oxygen is 249 mm. The partial pressure of a gas is 51 mmHg and part of the oxygen gas is 249 mm hg. That of water vapours of 171 mmHg.

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An error during DNA replication would create a gene mutation.

During DNA replication, the genetic information in a cell is copied to make new DNA molecules. However, mistakes can occur during this process, leading to changes in the DNA sequence, which can result in a mutation. Mutations can also be caused by exposure to environmental factors, such as radiation or chemicals, which can damage the DNA molecule directly or affect the cellular processes involved in DNA replication.

Mutations can have a variety of effects on the organism, ranging from no effect to causing serious health problems or even death. Gene mutations can also be inherited from a parent, which can result in genetic disorders or predisposition to certain diseases. Therefore, it is important to understand the mechanisms of gene mutations and their potential impacts on organisms.

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Heat is produced anytime current flows in a circuit, due to the collision between the flowing free electrons and the fixed atoms. When an electric current flows through a conductor, the free electrons move through the lattice of atoms.

As they move, they collide with the fixed atoms, causing the atoms to vibrate and transfer energy to neighboring atoms. This energy transfer increases the temperature of the conductor, resulting in the production of heat.

The amount of heat produced is directly proportional to the amount of current flowing through the conductor, the resistance of the conductor, and the time for which the current flows. This relationship is described by Joule's law, which states that the heat produced is equal to the product of the current, the resistance, and the time.

Mathematically, this can be expressed as H = I^2RT, where H is the heat produced, I is the current, R is the resistance, and T is the time. The collision between the flowing free electrons and the fixed atoms in a conductor leads to the production of heat, which is proportional to the current, resistance, and time for which the current flows.

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Answer:

Explanation:

Please take a look at the attached picture about the general formula of beta decay and the answer.

beta decay is an atom breaking down into a new atom of another element which the atomic number is 1 larger than the original, and one electron (β particle). The mass no. of the new atom remains same as before.

138 is iodine's mass number, the atomic number of iodine is 53, referred from a periodic table. The new atom formed will be Xe, which has an atomic no. of 54.

Answer:

c) James Chadwick discovered neutral particles in the nucleus

Explanation:

James Chadwick discovery of neutral particles in the nucleus best describes the further studies supported the work done by Ernest Rutherford. Hence, option (c) is the correct answer.

Answer:

\(thank \: you\)

The volume of hydrogen gas collected over water is approximately 25.10 liters. We need to consider the stoichiometry of the reaction, the ideal gas law, and the partial pressure of hydrogen gas.

First, let's balance the equation for the reaction between magnesium (Mg) and hydrochloric acid (HCl):

Mg + 2HCl -> MgCl₂ + H₂

From the balanced equation, we can see that 1 mole of magnesium reacts to produce 1 mole of hydrogen gas.

1. Calculate the number of moles of magnesium (Mg):

Molar mass of Mg = 24.31 g/mol

Number of moles of Mg = Mass of Mg / Molar mass of Mg = 25.6 g / 24.31 g/mol = 1.054 mol

2. Calculate the number of moles of hydrogen gas (H₂):

Number of moles of H₂ = Number of moles of Mg = 1.054 mol

3. Apply the ideal gas law to calculate the volume of hydrogen gas (V₂):

PV = nRT

Given:

Pressure (P) = 785.4 torr

Temperature (T) = 36.5 °C = 36.5 + 273.15 K = 309.65 K

R = 0.0821 L·atm/(mol·K) (gas constant)

Number of moles (n) = 1.054 mol

Convert the pressure to atm:

785.4 torr = 785.4 torr * (1 atm / 760 torr) = 1.032 atm

Substituting the values into the ideal gas law equation:

V₂ = (nRT) / P = (1.054 mol * 0.0821 L·atm/(mol·K) * 309.65 K) / 1.032 atm ≈ 25.10 L

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Answer:

B

Explanation:

Particles in a solid have fixed locations in a volume that does not change. Solids have a definite volume and shape because particles in a solid vibrate around fixed locations.

If the balloon had a volume of 3 L at a depth of 50 m, the original volume of the balloon will be

Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.

The pressure at a depth of 40 m is the hydrostatic pressure of the water plus the atmospheric pressure.

The hydrostatic pressure P of a liquid is given by the formula ;

P = ρgh

where,

P =  1000 kg m⁻³ x 9.81 ms⁻² x 50 m

   = 1000 kg m⁻¹ x 9.81 s⁻² x 50

   = 4.9 x 10⁵ Pa

Lets's Convert Pa in to atm

    =   4.9 x 10⁵ Pa x 1 / 103. 325 x 10³ Pa

    = 4.7 atm

Mow, lets calculate P(atm) ;

P(atm) = 14.7 psi x 1 atm / 14.7 psi

          = 1 atm

Total Pressure at 50 m is ;

P(total) = 4.7 atm + 1 atm

            = 5.7 atm

Now we can apply Boyle's Law to calculate the volume of the balloon at the surface.

P₁V₁ = P₂V₂

V₂ = P₁V₁ / P₂

According to the question ;

V₂ = 3 L x 5.7 atm  / 1 atm

     = 17.1 L

     = 20 L ( 1 significant figure)

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Answer:

A.  fossil fuel combustion

Explanation:

1) The mechanical advantage of the pulley is the number of pulleys in the system.

2) It is a system of pulleys with ropes between them.

3) The mechanical advantage is equal to the number of rope sections that support the load, minus one.

The mechanical advantage of a block and tackle pulley system is determined by counting the number of sections of rope that support the load. The mechanical advantage is equal to the number of rope sections that support the load, minus one.

It's important to note that the mechanical advantage of a block and tackle pulley system is based on the assumption that the pulleys are frictionless. In reality, friction within the system will decrease the mechanical advantage. Additionally, the mechanical advantage can be further increased by adding more pulleys to the system.

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The toluene which is sequence of reactions below the works best to prepare the following cyclohexadiene compound is given as follows  :

                 NBS , heat           NaOCH₃       Na, NH₃

Toluene  ------------------>   ----------------->    ------------>

                 CCl₄                    CH₃OH          CH₃OH

The toluene is the substituted aromatic hydrocarbon. the cyclohexadiene is used as the starting material for the synthesis of the natural complex products. the cyclohexadiene  can be formed by the toluene . the synthesis which is the best to prepare the cyclohexadiene  from the compound that is toluene is given as follows :

               NBS , heat           NaOCH₃       Na, NH₃

Toluene  ------------------>   ----------------->    ------------>

                 CCl₄                    CH₃OH          CH₃OH

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To prepare a 0.12 M solution of FeCl₃, the amount of solid FeCl₃ to be dissolved in a given volume of solvent will be 9.72 grams.

Given,

Molarity of FeCl₃ (M)= 0.12 M

The molecular weight (m) of FeCl₃ is  = 162 gm

The volume of the solution (V) to be prepared is =500 ml

The amount of FeCl₃ to be dissolved to make a 0.12 M solution is= x

So,

MV= x ÷ m × 1000

0.12× 500 = x ÷ 162 × 1000

x = 60 × 162 ÷ 1000

x= 9.72 gm

So 9.72 grams of FeCl₃ is dissolved to make 500 ml of 0.12 M solution.

For preparing 0.4 M HCl from 4M HCL:

If we need to make 500 ml of solution with 0.4M of HCL, then we use the formula:

M₁V₁= M₂V₂

0.4 × 500= 4 × x

x= 50 ml

So 50 ml of 4M HCL is taken to make 0.4 M HCL.

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Answer:

1. Ca(OH)₂ : Yes

Highest solubility  = pH of 2

2. Cu Br : Yes

Highest solubility  = pH of 4

3. Ca₃(PO₄)₂ : Yes

Highest solubility = pH of 2

Explanation:

From the common ion effect, the solubility of an ionic compound in a solution which already contains one of the ions in that compound will reduce. This is because, when an external stress is placed on a system in equilibrium,  the equilibrium position will shift to remove the effect of that stress. Therefore, when more of the same ions are added to a solution already containing that ion, equilibrium will shift towards removal of the ion, thereby reducing solubility.

1. For Ca(OH)₂:

Ca(OH)₂ is a fairly soluble ionic compound whose dissociation equation is given below:

Ca(OH)₂ (s) ----> Ca²+ (aq) + 2 OH- (aq)

Increase in pH will result in addition of more OH- ions, therefore, its solubility will decrease. On the other hand, a decrease in pH will remove OH- ions, thereby increasing solubility. The pH of highest solubility is 2.

2. For CuBr:

CuBr is a slightly acidic salt as it is salt of a strong acid, HBr and a weak base Cu(OH)₂. Hydrolysis of the salt will result in an acidic medium:

2 CuBr (s) + 2 H₂O (l) ----> 2 HBr (aq) + Cu(OH)₂ (aq).

Thus, an increase in pH will result in an increase in the solubility of CuBr due to the removal of H+ ions. The highest solubility will be at pH of 4.

3) For Ca₃(PO₄)₂

Calcium phosphate is a salt of slightly basic salt as it is a salt of a weak acid, H₃PO₄ and stronger base Ca(OH)₂.

Hydrolysis of the salt will result in a basic medium:

Ca₃(PO₄)₂ (s) + 6 H₂O (l) ---> 3 Ca(OH)₂ (aq) + 2 H₃PO₄ (aq)

Therefore, its solubility increases with decrease in pH due to the removal of OH- ions. The highest solubility will be at pH of 2.

Answer:

\(V=142L\)

Explanation:

Hello,

In this case, for the given reaction:

\(2H_2O_2(aq) \rightarrow 2H_2O(l) + O_2(g)\)

Starting with 315 g of hydrogen peroxide, we can compute the yielded moles of oxygen by using the following stoichiometric factor whereas the hydrogen peroxide to oxygen mole ratio is 2:1:

\(n_{O_2}=315gH_2O_2*\frac{1molH_2O_2}{34gH_2O_2}*\frac{1molO_2}{2molH_2O_2} \\\\n_{O_2}=4.63molO_2\)

Then, by using the ideal gas equation we can compute the resulting volume if the 4.63 moles of oxygen are collected at 0.792 atm and 23 °C as shown below:

\(PV=nRT\\\\V=\frac{nRT}{P}=\frac{4.63mol*0.082\frac{atm*L}{mol*K}*(23+273.15)K}{0.792 atm}\\ \\V=142L\)

Best regards.

The density of the He nucleus is approximately 2.8 × 10^17 grams per cubic centimeter (g/cm³).

To calculate the density of the He nucleus, we need to know its mass and volume. Given that the diameter of the nucleus is approximately 2.0 fm, we can calculate its radius as 1.0 fm (since the radius is half the diameter).

The volume of a sphere can be calculated using the formula V = (4/3)πr³, where V is the volume and r is the radius. Substituting the values, we get:

V = (4/3)π(1.0 fm)³

Using the conversion factor that 1 fm = 1 × 10^-13 cm, we can convert the volume from fm³ to cm³:

V = (4/3)π(1.0 × 10^-13 cm)³

Simplifying the equation further, we have:

V = (4/3)π(1.0 × 10^-13)³ cm³

Now, to calculate the density, we need the mass of the He nucleus. The mass of a He nucleus is approximately 4 atomic mass units (4 amu).

Using the conversion factor that 1 amu = 1.66 × 10^-24 g, we can convert the mass from atomic mass units to grams:

Mass = 4 amu × (1.66 × 10^-24 g/amu)

Now we have both the mass and volume. The density (D) of an object is defined as mass divided by volume:

D = Mass/Volume

Substituting the values, we get:

D = (4 amu × 1.66 × 10^-24 g/amu) / [(4/3)π(1.0 × 10^-13)³ cm³]

Simplifying the equation and performing the calculations, the density of the He nucleus is approximately 2.8 × 10^17 g/cm³.

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Answer:

-1222 kj

Explanation:

You can calculate the bond dissociation energy for each species using the table. Subtract the energies of the bonds made from the energies of the bonds broken. Remember to use the coefficients from the balanced chemical reaction.

BDE = [(H-H) + (N≡ N)] - [2 * [(H-C) + (C≡N)]]

BDE = [(432 kJ) + (942 kJ] - [2 * [(411 kJ) + (887 kJ)]] = -1222 kJ

Based on the bond energies for the given reaction, the enthalpy of the reaction is:

According to the given question, we are asked to calculate the enthalpy of the given reaction based on the bond energies given in H₂ (g) + N₂ (g) + 2 C (g) → 2 HCN (g).

As a result of this, we can see that bond dissociation energy for each of the species on the table need to be subtracted and then to make use of the coefficient of the balanced chemical reaction.

At the end, we would get 2*(411 kj) + (887 kj) which would give us

-1222 kj

Therefore, the correct answer is -1222 kj

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Answer:

C15 H31 O4 S

Explanation:

molecular formula is also the same because the value of "n" is 1

Answer:

The person above me is correct  

Explanation:

It's D

Fossil fuels are essential part of the power generation in the world. They are easily combustible and more reliable and cheaper. However, the burning of fossil fuels releases toxic gases  to the environment.

Fossil fuels are fuel generated from the decomposition materials. Petroleum, coal, natural gas  etc. are fossil fuels which are excavating from the earth.

Fossil fuels are non-renewable sources of energy. Hence, as the existing fossil sources are exhausted no more fossil fuel can be made. It is cheaper, reliable and easy to use.

However, the toxic hydrocarbon gases released from the burning of fossil fuels make the environment polluted. Therefore, overuse of fossil fuel definitely rise the atmospheric pollution.

Its use over the next 50 years, will increase the global warming and more of it will be exhausted.

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Answer: 7.52*10^23 molecules.

Explanation: This is a classic Stoichiometry problem.

In one mole of any substance, there are 6.02*10^23 molecules. This number is called Avogadro's number. We are given 55 grams of Co2 so to convert that to moles, we divided by the molar mass of Co2. We find the molar mass by adding the molar masses of the elements that make up the compound.

There is one molecule of Carbon and two molecules of Oxygen in one molecule of Co2. From the periodic table, the molar mass of Carbon is 12.01 and 16.00 for Oxygen. 1(12.01)+2(16.00) gives us the molar mass. We then divided 55 grams by that mass to find the number of moles. We then multiply the number of moles by Avogadro's number (6.02*10^23) to find the total number of molecules.

You can use this method for solving any problem that asks you to find the number of atoms or molecules of some number of grams of a substance.

Solution :

The partition coefficient

\($k_d= \frac{\text{(mass of caffeine in }CH_2Cl_2 / \text{volume of }CH_2Cl_2)}{\text{(mass of caffeine in water/ volume of water)}}$\)

   = 9.0

A). 1 x 200 mL extraction

Let m be the mass of caffeine in water

Mass of caffeine in \($CH_2Cl_2$\) = 100 - m

∴ \($\frac{(100-m)/200}{m/200}=9$\)

  \($\frac{100-m}{m}=9$\)

  \($10 \ m = 100$\)

\($m=\frac{100}{10}$\)

     = 10

Therefore, the mass remaining in the coffee is m = 10 mg

B). 2 x 100 mL extraction

First extraction :

Let \($m_1$\) be the mass of the caffeine in water.

Mass of caffeine in \($CH_2Cl_2$\) = 100 - m

∴ \($\frac{(100-m_1)/100}{m_1/200}=9$\)

  \($\frac{100-m_1}{m_1}=9$\)

  \($5.5 \ m_1 = 100$\)

\($m_1=\frac{100}{5.5}$\)

     = 18.18

Mass remaining in the coffee after the 1st extraction \($m_1$\) = 18.18 mg

Second extraction:

Let \($m_2$\) be the mass of the caffeine in water.

Mass of caffeine in \($CH_2Cl_2$\) = 18.18 - \($m_2$\)

∴ \($\frac{(18.18-m_2)/100}{m_2/200}=9$\)

  \($\frac{18.18-m_2}{m_2}=9$\)

  \($5.5 \ m_2 = 18.18$\)

\($m_1=\frac{18.18}{5.5}$\)

     = 3.3

Mass remaining in the coffee after the 1st extraction \($m_2$\) = 3.3 mg

Answer:

New volume = 6.0L

Explanation:

Make a list of variables given in the question, and what we want to find:

Initial volume (L) = Vi = 3.1

Initial temperature (K) = Ti = 193

New temperature (K) = Tn = 374

New volume (L) = Vn

We have volumes and temperatures given and we're talking about gas, the equation including both these variables that should come to mind is the ideal gas equation:

PV = nRT

P = pressure (Pa)

n = number of moles

R = gas constant = 8.31

Now, we construct an equation we can solve to get the new volume:

P(Vn) = nR(Tn)

And insert the values we know:

P(Vn) = n(8.31)(374)

P(Vn) = n·3107.94

The equation contains 3 unknown variables;

We should first try to see if we can eliminate the 2 we are not interested in, namely P and n;

What we should recognise is that the pressure and number of moles will not change upon warming the balloon;

Firstly, heating the gas inside the balloon doesn't add anything to the balloon, i.e. doesn't increase the moles of gas, it simply raises the energy of the gas particles already within the balloon, so n will not change;

Secondly, I think there is a mistake in the question, it should read "assume constant pressure" in the brackets, since the temperature does change, which we are told;

Also, we can assume normal atmospheric pressure inside and outside the balloon as would be the case ordinarily;

What we want to do with this information is rearrange the equation we constructed to have these 2 constant or unchanging variables on one side and everything else on the other, so:

\(\frac{P}{n} = \frac{3107.94}{V_{n} }\)

Next, we construct an equation for the balloon before warming:

P(Vi) = nR(Ti)

P(3.1) = n(8.31)(193)

P·3.1 = n·1603.83

Once again, rearrange to get P and n on one side of the equation and everything else on the other:

\(\frac{P}{n} = \frac{1603.83}{3.1} \\\\ \frac{P}{n} = 517.364516\)

Now, we have two equations for P/n, we can eliminate P/n since both these values remain the same before and after warming the balloon as previously established:

\(\frac{3107.94}{V_{n} } = \frac{P}{n} = 517.364516 \\\\ \frac{3107.94}{V_{n} } = 517.364516 \\\\\)

Now, rearrange and solve for Vn:

\(\frac{3107.94}{V_{n} } = 517.364516 \\\\ V_{n} = \frac{3107.94}{517.364516} \\\\ V_{n} = 6.00725...\)

Vn = 6.0L

Answer:Yes

Explanation:

Because Chinstrap penguins eat krills

Answer:

8 Hydrogen Atoms

Explanation:

The subscripts that are next to the coefficient (letter) indicates how much atoms the element/compound has.

So:

(CH3) × 2 ⇒ 6 hydrogen atoms

+ 1 from (CH) and another from (OH) ⇒ 8 atoms

Answer: come on lets link can do what i do

These are 10 unique questions you can ask your fellow classmates about the things they have learned in your special ed classroom:

A special education classroom is a classroom designed to meet the needs of students with disabilities. These classrooms are staffed by specially trained teachers who are able to provide individualized instruction and support to students with a variety of disabilities.

These questions are designed to get your classmates thinking about the things they have learned in your special ed classroom and how those things have impacted them. The answers to these questions can be used to create a powerful and informative ad for your classroom.

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From the given data, the name of the hydrated salt would be  \(CoCl_2.83H_2O\).

The formula of the hydrated salt can be determined using the empirical formula approach. That is, we will find the mole equivalent of the anhydrous salt and the water of hydration and then combine them into a single formula after dividing by the smallest mole.

First, we need to determine the mass of the anhydrous salt and the water of hydration.

Mass of crucible (x) = 12.090 g

Mass of hydrated salt + crucible (y) = 16.250 g

Thus, the mass of the hydrated salt can be determined by subtracting x from y.

Mass of hydrated salt = 16.250 - 12.090 = 4.16 g

Mass of hydrate + crucible after evaporating off the water (z) = 12.424 g

Mass of anhydrous salt = z - x

                                      = 12.424 - 12.090

                                      = 0.334 g

Mass of water = 4.16 - 0.334

                        = 3.826 g

Now, let's find the moles:

Molar mass of \(CoCl_2\) = 129.839 g/mol

Molar mass of water = 18.01 g/mol

Mole of \(CoCl_2\) = 0.334/129.839 = 0.00257 mol

Mole of water = 3.826/18.01 = 0.2124 mol

Dividing through by the smallest mole

\(CoCl_2\) =  0.00257 / 0.00257  = 1

water = 0.2124/ 0.00257 = 83

Thus, the formula of the hydrate would be \(CoCl_2.83H_2O\)

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