Which property of water helps it maintain a relatively stable temperature?
High specific heat capacity
Low density
Neutral nature
Nonpolar structure

the second one is space while the first one is shape

1= Shape

2= Space

plz vote brainleist

Answer:

Released

Explanation:

Answer:

1 respuesta. fórmula empírica = CH2

Explanation:

Translatation: 1 Answer. empirical formula = CH2

True when carbon dioxide dissolves in rainwater carbonic acid forms which raises the ph of rainwater above 7.0

When carbon dioxide dissolves in rainwater, it forms carbonic acid. This lowers the pH of the rainwater, making it more acidic than 7.0. However, over time, the carbonic acid reacts with minerals in the soil, neutralizing its acidity and bringing the pH closer to neutral.

When carbon dioxide dissolves in rainwater, it forms carbonic acid which lowers the pH of the rainwater. This is because carbonic acid is a weak acid that can dissociate to form hydrogen ions (H+) and bicarbonate ions (HCO3-), which increase the acidity of the solution. As a result, the pH of rainwater can drop below 7.0. However, this acidity is temporary as carbonic acid eventually reacts with minerals in the soil to neutralize its acidity.

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Explanation:

Because chemistry deals with the structure of matter (such as the structure of the atom, it is related to physics. ... Because geology involves study of the matter the Earth and other bodies in the solar system are made of, geology involves chemistry. Geochemistry is the study of Earth materials, and how they change.

The values of the angular momentum quantum number (l) corresponding to the letters s, p, d, and f are as follows: s=0, p=1, d=2, and f=3. These letters are used to denote the values of l because they are easier to remember and provide a simpler way to represent the different shapes of electron orbitals in atoms.

The letters originated from early spectroscopic studies where the spectral lines were categorized as sharp (s), principal (p), diffuse (d), and fundamental (f) based on their appearance. These categories were later connected to the angular momentum quantum number, which defines the shape and energy of an electron's orbital. Using these letters simplifies the notation for atomic orbitals and makes it easier to understand their properties.

Overall, the use of s, p, d, and f to denote the values of l is a practical choice that has been carried forward from early spectroscopy to modern quantum chemistry.

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The effective multiplication factor of a reactor is 0.94. a) reactivity =0.0638, b)k=1

What is reactivity ?

responsiveness as a quality or state. Chemistry. the similarity between one atom, molecule, or radical's capacity to chemically interact with another atom, molecule, or substance.

Reactor: What is it?

Reactor: A container or piece of machinery utilised in chemical engineering to carry out chemical reactions for study or manufacturing.

(a) The multiplicative efficiency is k=0.94.

Rho = frac k-1 k = -0.0638 is the reactivity.

(b) K = 1, meaning that the reactor must have a higher core reactivity in order to reach criticality.

Consequently, k=0.94 is the actual multiplication factor.

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A solid produced by a chemical reaction in solution that separates from the solution is called Precipitate.

Precipitate: a solid that forms from a chemical reaction taking place in solution and separates from the solution.

a solid created when a solution undergoes a change, frequently as a result of a chemical reaction or temperature shift that makes a solid less soluble. A precipitate in meteorology is either liquid or solid water (rain, snow, etc.)

The clear liquid remaining above the precipitated or the centrifuged solid phase is also called the 'Supernate' or 'Supernatant'.

Therefore, the chemical reaction in solution that separates from the solution is called precipitate.

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Answer:  1.8x10^-4 M H+

Explanation:  The number of moles of NaOH added to the 100 ml soultion will be equal to the number of moles of H+ present in that solution.  

Moles NaOH in 7.2 ml of 2.5x10^-3 M NaOH

(2.5x10^-3 M NaOH) is the same as 2.5x10^-3 moles NaOH/liter

(2.5x10^-3 moles NaOH/liter)*(7.2 ml)*(1 liter/1000ml) = 1.8x10^-4 moles NaOH used to titrate 100 ml of the acid.  That means there was 1.8x10^-4 moles of H^+ in 100 ml.  

Concentration of H^+ = (1.8x10^-4 moles H)/0.100 l) = 1.8x10^-4 M H+

(pH of 3.74)

Answer:

The acceleration of the object equals the gravitational acceleration. The mass, size, and shape of the object are not a factor in describing the motion of the object. So all objects, regardless of size or shape or weight, free fall with the same acceleration

Answer:

Explanation:

Moles of Pb(NO3)2 =  mass/molecular mass

= 50.0 grams/(207.20*1 + 14.01*2 + 16*6)

= 50.0 grams/331.22

= 0.15 moles

Moles of NaI

= 30/(22.99+126.9)

= 30/149.89

= 0.2 Moles

A. NaI is less 2x Pb(NO3)2 so NaI is the limiting reagent.

B. The ratio is 1 to 2 so there is 0.15 - 0.2/2 = 0.05 mole

or 16.78 grams of Pb(NO3)2 left.

C. As NaI is limiting, only 0.2 Moles of NaNO3 is formed.

Mass =  Moles * Molecular Mass

Molecular Mass of NaNO3 can be calculated as:  

Na - 22.99

N - 14.01

O - 3(16) = 48

23+14+48 = 85gram / mole

Thus, Mass =  0.2*85  = 17 gram of NaNO3

Mass is conserved in a chemical reaction.

Mass of PbI2 can be calculated as:

50+30-16.78-17

= 46.3 gram of PbI2

Mass =  

12.75

Thus, 12.75g of Sodium Nitrate can be formed

Answer:

Explanation:

Pb(NO3)2 (aq) + 2 NaI (aq) --> PbI2 (s) + 2 NaNO3 (aq)

MM for each compound -

Pb(NO3): 207 + 14x2 + 16x3x2 = 331

PI2: 207 + 127x2 = 461

NaI: 23 + 127 = 150

NaNO3: 23 + 14 + 16x3 = 85

Moles of Pb(NO3)2 = 50/331 = 0.15

Moles of NaI = 30/150 = 0.2

Ratio of moles is 1:2

So NaI is limiting

Limited to 0.2/2 = 0.1 mole of Pb(NO3)2

Excess = 0.15 - 0.1 = 0.05 mole

Mass remains = 0.05x331 = 16.55 grams

Moles of NaNO3 formed = Moles of NaI reacted = 0.2

Mass = 0.2x85 = 17 grams

Moles of PbI2 formed = Moles of Pb(NO3)2 reacted = 0.1

Mass = 0.1x461 = 46.1 grams

If 12 grams of NaNO3 actually formed in the reaction,

percent yield = 12/17x100% = 70.6%

Answer:

The answer is (c) Zn(No3)2

Explanation:

Because we know the cation of zinc is+2 and whereas nitrate is anion, -1.

Investing   :

"I'm considering investing in equities."

"I need a system for handling my finances."

"I need to put money away for the future."

No Investment :

"My knowledge of investment is limited."

"I am unable to purchase stocks."

"I don't particularly enjoy taking chances."

Explanation:

These are accurate because I recently completed the course that taught me these things.

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Answer:

incomplete question need more information

The acceleration of the mass is 8.0 m/s² when an unbalanced 16.0 N force is applied to a 2.0 kg mass.

To calculate the acceleration of the mass, we can use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration (F = ma).

We know that the force acting on the object is 16.0 N, and the mass of the object is 2.0 kg. So, we can use the equation to solve for the acceleration:

a = F ÷ m

where, a = acceleration, F = force (16.0 N), m = mass (2.0 kg)

So,

a = 16.0 N ÷ 2.0 kg = 8.0 m/s²

Therefore, the acceleration of the mass is 8.0 m/s²

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Many scientists are dependent on the government for funding for many reasons. One of the main reasons is that research is often too expensive to carry out without the help of the government. Option b)

The government plays a major role in scientific research, especially in areas of national interest. Government research funding plays an important role in promoting scientific inquiry and advancing knowledge of the natural world. The government is in charge of allocating research funds to public and private organizations. For scientists who want to carry out their research, it can be challenging to find funding from other sources, such as private companies.

As a result, the majority of researchers rely on government grants to finance their work. This dependence on government funding has advantages and disadvantages . One of the advantages is that it ensures that scientific research is carried out in areas that are of national interest. By prioritizing funding for specific areas, the government can direct research toward those issues that are considered important to the country. Another advantage is that it can lead to more innovation. Government grants often provide funding for research that might not be carried out otherwise, such as new technologies or techniques. This can result in breakthroughs that lead to new products, services, or ideas.However, there are also some disadvantages to being dependent on government funding. One of the main drawbacks is that it can lead to a lack of independence. Researchers who rely on government grants may feel obligated to focus on areas that the government deems important, rather than pursuing their own interests or those that are considered unconventional. Another disadvantage is that government funding can be unpredictable. Grants are usually awarded for a limited period of time and may be subject to budget cuts or changes in priorities. As a result, scientists may have to constantly seek new sources of funding or may be forced to abandon their research projects. Hence option b) is correct.

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Answer:

When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction

Explanation: i think

On the pH scale, the pH range for an acid is 0–7 and the pH range for a base is 7–14. pH 7 refers to a neutral solution. pH-7 pure water is a substance considered neutral.

This substance, which consists of a water molecule with a proton (H+) added, is an ion because it has a charge. It is known as the hydronium ion and has the formula H3O+. When an acid dissolves in water, the hydronium ion is always produced. Always interacting with the nearby water molecule to generate H3O+, the acid's H+.

For the detection of trace gases in the air, chemical ionization using proton-transfer reactions with hydronium ions (H3O+) is frequently used.

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Answer: chlorofluorocarbon

Explanation:

chlorofluorocarbon

Answer:

Carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are greenhouse gases. Chlorofluorocarbons (CFCs) are also considered greenhouse gases, but they are now largely banned due to their damaging effects on the ozone layer.

Explanation:

The property of acids which would cause acid rain to damage buildings over time is:

Acids react with limestone.

The correct answer choice is option c.

This simply means that acids has this property which corrodes the surface they come in contact with especially stones.

However, this can be done by coating the surface of metals, or carbonate by coating it with other metals. By so doing, this can prevent acid rain damage to it.

That being said, by default, concentrated acids are highly corrosive.

Coating surfaces of metals can prevent acid rain damage to it

This refers to a substance which when dissolved in water, it produces hydrogen ion as the only positive ion in the solution.

So therefore, the property of acids which would cause acid rain to damage buildings over time is acids react with limestone.

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Answer:

nothing common dude

Conducting several extractions with smaller volumes of solvent is more effective than a single extraction with a large volume of solvent.

The effectiveness of an extraction process can be evaluated based on the amount of target compound that is extracted from the mixture. When using a solvent to extract a target compound from a mixture, the solvent can become saturated with the compound, making it less effective at extracting additional amounts.

Overall, conducting several extractions with smaller volumes of solvent is a more effective extraction process than a single extraction with a large volume of solvent because it allows for more target compound to be extracted and provides greater control over the extraction process.

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Answer:

92

Explanation:

Answer

Procedure

Considering the following chemical equation, which is already balanced

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

We assume there is enough oxygen to react with all propane and thus, propane is the limiting reactant

Therefore we use the equation to determine the amount of propane

189.68g CO₂ /

doAnswer:

Explanation:

i  don¨t lf it rigtht but i thnk it C3h8 an a thank u

The concentration of CO (g) in the equilibrium mixture is 0.020 M. In other words, only a small amount of CO (g) is produced in this reaction at 1000°C. T 0.020 M.

The concentration of CO in an equilibrium mixture (in mol/L) is 5.8 M.

Given that the concentration of H2O (g) is [H2O] = 0.500 M at 1000°C, and  the reaction is:

C(s) + H2O(g) ⇄ CO(g) + H2(g) KC = 0.2 at 1000°C

We need to determine the concentration of CO in an equilibrium mixture (in mol/L)

if a reaction mixture initially contains only reactants.

We can solve this problem using the ICE table method as follows:

Let x be the change in concentration of H2O (g) and CO (g) when they reach equilibrium.

Then the equilibrium concentrations of CO (g) and H2 (g) are equal to x. Hence, the equilibrium concentration of H2O (g) is (0.500 - x) M. Substitute these values in the expression for Kc and solve for x.

Kc = [CO (g)] [H2 (g)] / [H2O (g)] [C (s)]

= 0.2[CO (g)] = Kc [H2O (g)] [C (s)] / [H2 (g)]

= 0.2 × (0.500 - x) / x

We can simplify this expression by cross-multiplication to get:

5x = 0.1 - 0.2xx = 0.02 M

Substituting x = 0.02 M in the expression for [CO (g)], we get:

[CO (g)] = 0.2 × (0.500 - 0.02) / 0.02 = 5.8 M (approx.)

Therefore, the concentration of CO (g) in an equilibrium mixture (in mol/L) is 5.8 M.                                                                                               The problem requires us to find the equilibrium concentration of CO (g) in a mixture that initially contains only reactants.

To solve this problem, we need to use the expression for the equilibrium constant Kc, which is given by:

Kc = [CO (g)] [H2 (g)] / [H2O (g)] [C (s)]

We can also use the ICE table method to solve this problem. In this method, we start with the initial concentration of the reactants and calculate the change in concentration of each species as they reach equilibrium.

We then use the equilibrium concentrations to calculate the value of Kc and solve for the unknowns. Here is how we can set up the ICE table for this problem: Reaction:

C(s) + H2O(g) ⇄ CO(g) + H2(g)

Initial: [C] = [H2]

= 0 M,

[H2O] = 0.500 M

Equilibrium: [C] = [H2] = x,

[H2O] = 0.500 - x,

[CO] = [H2] = x

Change: +x +x -x -x

Substituting the equilibrium concentrations into the expression for Kc, we get:

Kc = [CO] [H2] / [H2O] [C]

= x² / (0.500 - x)

= 0.2

Solving for x, we get: x = 0.020 M

Substituting this value of x into the expression for [CO], we get:

[CO] = x = 0.020 M

Therefore, the concentration of CO (g) in the equilibrium mixture is 0.020 M.

In other words, only a small amount of CO (g) is produced in this reaction at 1000°C. T 0.020 M.

The concentration of CO in an equilibrium mixture (in mol/L) is 5.8 M.

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Answer:

sadr

Explanation:

Pls give brainlist

Answer:

False

Explanation:

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Answer:

C. Animals can get tangled up in the trash and be unable to swim or otherwise move

Answer:

76

Explanation:

I think 76 should be the correct answer because 152÷2=76