When 2 equal forces act on and object and the object generally doesn't move is

A. interia
B. unbalanced force
C. balanced force
D. speed

True, the entropy of a perfectly ordered crystalline substance at 0 K is 0 J/mol.

The third law of thermodynamics states that, the entropy of a system approaches a constant value as the temperature of the system approaches absolute zero.

The entropy of any perfectly ordered, crystalline substance at absolute zero temperature is zero.  That is, the entropy of a pure, perfect crystalline substance at 0 K is 0 J/K.

Thus, we can conclude that the given statement is true.  The entropy of a perfectly ordered crystalline substance at 0 K is 0 J/mol.

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Answer:

ty

Explanation:

your question is invalid

Answer:

Concentration of 1.798 M of the potassium ion.

Explanation:

1st) It is necessary to write the dissociation equation of K2CO3:

2nd) In the dissociation equation of K2CO3, we can see that from 1 mole of K2CO3, 2 moles of potassium ion (K+) are formed, so from 0.899 M K2CO3 solution we will have:

2 x 0.899M = 1.798 M

a concentration of 1.798 M of the potassium ion.

First, we must know that:

1 cal = 4.186 J ==> 1000 cal = 4186 J or 1 kcal = 4.186 kJ

(sometimes the heat reaction involves these units)

Now, 17.69 kcal x (4.186 kJ/1 kcal) = 74.05 kJ

Answer: 74.05 kJ

HAZWOPER training and certification recognize:

The correct option is both A and C

HAZWOPER (Hazardous Waste Operations and Emergency Response) training and certification recognize that a large number of victims (as much as 80%) in hazardous waste incidents or emergencies will self-present or be self-referred for medical treatment.

Additionally, HAZWOPER training acknowledges that victims may use any entrance they can access at a hospital, not just the emergency department entrance.

This is because individuals affected by hazardous materials may arrive at different areas of the hospital seeking medical assistance.

Therefore, option d. Both A and C are correct statements regarding the recognition of HAZWOPER training and certification.

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Answer:

eyes makes the most sense to me

Answer:

d. positron

that's the answer brainly tells me I need to write at least 20 characters and that's d u m b.

Bone density can be affected by a mutation. This mutation can cause very dense bones that are almost unbreakable therefore the true statement about mutations in organism is that changes caused by mutations can be harmful, beneficial, or neutral to an organism which is therefore denoted as option B.

This is referred to as a change in the DNA sequence of an organism and it occurs when there are errors during cell division.

The changes caused have different effects on the organisms which could be harmful, beneficial, or neutral.

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Answer:

2HNO2 + O2 ------> 2HNO3

Explanation:

Answer:

the higher the energy tje lower the wavelength

Explanation:

inverse relationship

Answer:

It's an example of an inverse relationship :)

(a)  The mass percent of HCl in the solution is approximately 36.1%.

(b)  The molality of HCl in the solution is approximately 15.5 mol/kg.

(c)  The mole fraction of HCl in the solution is approximately 0.218.

(a) To calculate the mass percent of HCl, we need to determine the mass of HCl in a given volume of the solution.

Given: Concentration of HCl = 11.8 M

Density of the solution = 1.190 g/mL

First, we need to calculate the mass of the solution. Since density is mass per unit volume, the mass of 1 mL of the solution is 1.190 g.

Next, we need to calculate the mass of HCl in 1 mL of the solution. Since the concentration is given in moles per liter (M), and the molar mass of HCl is 36.46 g/mol, we can calculate the mass of HCl in 1 mL as follows:

Mass of HCl = concentration × volume × molar mass

          = 11.8 mol/L × 0.001 L × 36.46 g/mol

          = 0.430 g

Now, we can calculate the mass percent of HCl using the following formula:

Mass percent = (mass of solute ÷ mass of solution) × 100

           = (0.430 g ÷ 1.190 g) × 100

           ≈ 36.1%

(b) The molality of HCl is calculated by dividing the moles of solute (HCl) by the mass of the solvent (water) in kilograms.

Since the density of the solution is given as 1.190 g/mL, the mass of 1 mL of the solution is 1.190 g. However, we need to consider the density of the solvent (water) to calculate the mass of water in the solution.

Assuming the density of water is 1 g/mL, the mass of water in 1 mL of the solution is (1.190 g - 0.430 g) = 0.760 g.

To calculate the molality of HCl, we need to convert the mass of water to kilograms:

Mass of water (kg) = 0.760 g ÷ 1000 = 0.000760 kg

The molality (m) is calculated using the formula:

Molality = (moles of solute ÷ mass of solvent in kg)

        = (11.8 mol/L × 0.001 L) ÷ 0.000760 kg

        ≈ 15.5 mol/kg

(c) The mole fraction (X) of HCl is calculated by dividing the moles of HCl by the total moles of all components in the solution.

To calculate the mole fraction, we need to consider the volume of the solution and convert it to liters.

Given: Concentration of HCl = 11.8 M

Volume of the solution = 1 mL

Volume of the solution (L) = 1 mL ÷ 1000 = 0.001 L

To calculate the mole fraction of HCl, we need to calculate the moles of HCl and the moles of water (solvent) in the solution.

Moles of HCl = concentration × volume

            = 11.8 mol/L × 0.001 L

            = 0.0118 mol

Moles of water = mass of water ÷ molar mass of water

             = 0.760 g ÷ 18.015 g/mol (molar mass of water)

             = 0.0422 mol

Total moles in the solution = moles of HCl + moles of water

                           = 0.0118 mol + 0.0422 mol

                           = 0.054 mol

Mole fraction of HCl = moles of HCl ÷ total moles

                   = 0.0118 mol ÷ 0.054 mol

                   ≈ 0.218

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Answer:

Data based observation

Explanation:

Beause It is talking about how many trees have died this past year.

Over 100 Joshua Trees died this year is a type of data based observation. Therefore, option C is correct.

By observing behavior, events, or physical traits as they occur in the wild, observers can gain information. Overt observations are possible.

The observation method of data collecting is observing individuals in a certain location or environment on a particular day and time. In essence, researchers observe the behavior of the people or environment they are studying. This type of study can be planned, unplanned, or participant-based.

Both quantitative and qualitative observations are possible. Measurements or projections that provide definable, numerical results are included in quantitative observations. Results from qualitative observations are descriptive and not quantifiable.

Thus, option C is correct.

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The compound that contains the highest percentage of phosphorus by mass is Sarin (C₄H₁₀FO₂P)

To know the compound with the highest percentage of phosphorus, we shall obtain the percentage composition of phosphorus in each compound. Detrails below:

For Tabun (C₅H₁₁N₂O₂P)

Percentage of P = (mass of P / mass of C₅H₁₁N₂O₂P) × 100

Percentage of P = (31 / 162) × 100

Percentage of P = 19%

For Soman (C₇H₁₆FO₂P)

Percentage of P = (mass of P / mass of C₇H₁₆FO₂P) × 100

Percentage of P = (31 / 182) × 100

Percentage of P = 17%

For Sarin (C₄H₁₀FO₂P)

Percentage of P = (mass of P / mass of C₄H₁₀FO₂P) × 100

Percentage of P = (31 / 140) × 100

Percentage of P = 22%

Thus, from the above calculation, we can conclude that the compound with the highest percent of phosphorus is Sarin (C₄H₁₀FO₂P)

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The part of the product label that describes the hazardous effects of a chemical is the hazard statement.

The hazard statement describes the potential health and environmental risks associated with using or coming into contact with the chemical.

It typically includes information about the severity of the hazard, the type of route of exposure (skin, inhalation, oral, etc.), the symptoms of exposure, and the necessary protective measures to be taken.

For example, a product label may contain a hazard statement such as “Harmful if swallowed. May cause respiratory irritation. Avoid contact with eyes and skin. Wear suitable protective clothing”.

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Answer:

1 mol CO2

Explanation:

3 mol CH4 * \(\frac{1 mol CO2}{1 Mol CH4}\) = 3 mol of CO2

2 mol O2 * \(\frac{1 mol CO2}{2 mol O2}\) = 1 mol CO2

For Example: You make steak dinners and each plate has to have 1 steak and 2 potatoes. You have 3 steaks (CH4) but only 2 potatoes (O2). With only the steak you could make three dinners, but you are limited to only be able to make one plate (Mole of CO2) because you only have 2 potatoes.

Answer:

less than 45 cm, as the ball transforms some of its potential eneregy to termal energy and sound energy

The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg

To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:

F = (G * m1 * m2) / \(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.

Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):

1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)

Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.

The question was incomplete. find the full content below:

Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid

A. 3.4 x \(10^{11}\) kg

B. 8.3 x \(10^{12}\) kg

C. 1.2 x \(10^{12}\) kg

D. 1.2 x \(10^{10}\) kg

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Answer:

Because it is dissolving and has pigment.  

Explanation:

Answer:

The solvated electron is responsible for a great deal of radiation chemistry. Alkali metals dissolve in liquid ammonia giving deep blue solutions which conduct electricity . The blue colour of the solution is due to ammoniated electrons which absorb energy in the visible region of light.

Answer:

newton-meters or (N-m)

Explanation:

Answer:

Kr, Ar, Ne, N

Explanation:

Hope this helps

Answer:

see explanations

Explanation:

              PCl₅  =>     PCl₃     +     Cl₂

C(eq):   [PCl₅]       0.054M        0.34M

a.  Keq = [PCl₃][Cl₂]/[PCl₅]

b.  7.9 = (0.054)(0.34)/[PCl₅] => [PCl₅] = (0.054)(0.34)/(7.9) = 0.0023M

c.  If [PCl₃] = 0.054M; [Cl₂] = 0.34M and [PCl₅] = 0.0023M then the reaction is at equilibrium and will not shift forward or in reverse. In order to determine if reaction is not at equilibrium, a set of concentration values needs to be given in problem, used to calculate Qeq and compared to the given Keq value.  The following defines direction of shift ...

Keq  <  Qeq  =>  rxn shifts left

Keq  =  Qeq  =>  rxn is at equilibrium (no shift)

Keq  >  Qeq  =>  rxn shifts right

NOTE: If Keq is listed first followed by Qeq in the above conditions, the inequality symbol indicates direction of shift.

Answer

(d) Mole % = 9.02%

(e) Mass % = 15.0%

Explanation

Given that:

% methanol by mass of the aqueous solution = 15.0%

Density of methanol = 0.998 g/mol

What to find:

To calculate (d) Mole % (e) Mass %

Step-step solution:

(d) Mole %

You need to pick a sample volume of this solution and use the given density to find its mass.

Let's take a 1.00 L sample of this solution. The solution has a density of

0.998 g/mL, meaning that you get 0.998 g for every 1 mL of solution.

The mass of the 1.00 L sample will thus be:

Now, it is known that this solution is 15.0% w/w methanol. In simple terms, this tells you that you get 15.0 g of ethanol for every 100 g of solution.

So the sample will contain:

This implies that the solution will also contain:

To get the mole % of methanol, you must determine how many moles of methanol and of water the solution contains.

Hence, the mole % of methanol will be:

Hence, the mole % methanol of the aqueous solution is 9.02%.

(e) Mass %

The mass % of methanol in the aqueous solution has been given in the question to be 15.0%.

Also, you can calculate it from the masses of methanol and water above as follows:

In an ecosystem, the  impact of soil Science to the development of Ghana's agriculture is that it provides suitable conditions for root germination and growth.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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The chemical element in group one that is also a member of period 2 is lithium.

The chemical element in group one that is also a member of period 2 is lithium therefore, the element referred to here is lithium. Group 1 has only one valence electron. If we add one to 23, we will have 24 and the element is chromium.

For question three, the focus is on period 5, five groups to the previous answer will give us the element molybdenum. The atomic number of Mo is 42 and its mass number 96 hence it has 54 neutrons. The element that has atomic number 54 is Xe.

The element that has atomic mass 43 which is reversal of the atomic number of the former answer is scandium.

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Answer:

B.) 74°

Explanation:

∠WVX + ∠VXY + ∠XYW + ∠YWV = 360°

Substituting their values, we have:

90° + (12x + 2)° + 90° + (18x -2)° = 360°

Perform addition and subtraction

90 + 12x + 2 +90 + 18x -2 = 360

30x + 180 = 360

Transpose 180 to the right side such as:

30x = 360 -180

30x = 180

Solve for x, we have:

x = 180 / 30

x = 6

Solving for the angle VXY, we have:

∠VXY = 12X + 2 = 12(6) + 2

∠VXY = 74°

Answer:

74 degrees

Explanation:

Right on Edge