Answer this with work

Answer:

the formula for mass number is "mass number = protons + neutrons".

Answer:

no

Explanation:

stop troll hate

Influenza viruses spread mainly through droplets of respiratory secretions in the air, typically generated by coughing and sneezing.

A contagious illness brought on by influenza viruses, influenza is also referred to as "the flu." Flu-like symptoms, which can range in severity from moderate to severe, frequently include fever, runny nose, sore throat, muscle discomfort, headache, coughing, and exhaustion. After being exposed to the virus, these symptoms usually appear one to four days later and remain for two to eight days.

Especially with children, diarrhea and vomiting can happen. Pneumonia, which can be brought on by the influenza virus or a subsequent bacterial infection, may develop from the viral-related illness. Other side effects of infection include meningitis, encephalitis, acute respiratory distress syndrome, and deterioration of pre-existing conditions like asthma and cardiovascular disease.

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Answer:

wheres the options?

Explanation:

Answer:

a full moon or new moon

Explanation:

For the reaction, KP, the equilibrium constant, is 430.5. is the answer.

Kp is the result of adding the partial pressures of the products and the reactants. The partial pressure is raised to a power equal to the number of moles, just like Kc does with any change in the number of moles.

You can formulate the reaction's equilibrium constant KP as follows:

KP equals (PSO3)2 / ((PSO2)2 x (PO2)).

With the provided values substituted, we obtain:

KP = (0.0166)² / ((0.001513)² x (0.001717))

KP = 430.5

In light of this, the reaction's equilibrium constant is 430.5.

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Answer:

The current of the toaster is 3.93A

Explanation:

Using the GRASS method:

G: Given: The information that is given is that we have 28Ω of Resistance and 110V of voltage.

R: Required: We need to find the current measured.

A: Action: We can use Ohm's law that relates resistance, voltage and current in the equation:

V = R*I

Or:

I = V/R

Where I is current in A, V is voltage = 110V and R is resistance = 28Ω

S: Solve:

I = 110V / 28Ω

I = 3.93A

S: Statement:

Explanation:

The Answer is a reaction between two acids

Answer: 1/4

Explanation:

2.4/0.09=2  

1=1/2

2=1/4

3=1/8

So therefore because we got 2 , so it will be 1/4.

The new temperature of the water bath is approximately 27.27°C.

We must apply the equation to determine the new temperature of the water bath:

q = mcΔT

Where q denotes the heat transmitted, m is the mass of the water, c denotes the water's specific heat capacity, and T denotes the temperature change.

Let's begin by converting the water bath's mass from kilogrammes to grammes:

7.20 kg = 7200 g

The equation can then be rearranged to account for the temperature change:

ΔT = q / (mc)

adding the specified values to the equation:

T = 4.18 J/g°C * 7200 g * -137000 J

ΔT ≈ -4.03°C

Since heat transfers from the flask to the bath, the temperature change is negative. As a result, the water bath's new temperature is:

New temperature is equal to 31.3 4.03

New

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The relationship between atmospheric content and global warming is a key aspect of understanding climate change.

The Earth's atmosphere is composed of various gases, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and water vapor. These gases, often referred to as greenhouse gases, act as a natural "blanket" by trapping heat radiated from the Earth's surface and preventing it from escaping into space. This process, known as the greenhouse effect, is essential for maintaining a habitable temperature on Earth.

However, human activities, particularly the burning of fossil fuels (such as coal, oil, and natural gas) and deforestation, have significantly increased the concentration of greenhouse gases in the atmosphere, particularly CO2. The increased atmospheric concentrations of these gases have enhanced the greenhouse effect, leading to an increase in the Earth's average surface temperature. This phenomenon is commonly known as global warming.

There is substantial scientific evidence supporting the current explanation for global warming. Multiple lines of evidence, including temperature records, ice core data, and computer modeling, have demonstrated a clear correlation between the rise in greenhouse gas concentrations and the increase in global temperatures over the past century. The Intergovernmental Panel on Climate Change (IPCC), a leading scientific body, has provided extensive assessments based on a comprehensive review of scientific research that consistently supports the link between human activities, greenhouse gas emissions, and global warming.

Furthermore, the impacts of global warming are already being observed worldwide. These impacts include rising sea levels, melting glaciers and polar ice caps, more frequent and intense heatwaves, changes in precipitation patterns, and shifts in ecosystems. These changes have significant implications for human societies, including risks to food security, water resources, biodiversity, and public health.

Efforts to mitigate global warming and its consequences involve reducing greenhouse gas emissions, transitioning to renewable energy sources, improving energy efficiency, and implementing sustainable land-use practices. Additionally, international agreements like the Paris Agreement aim to limit global warming to well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 degrees Celsius.

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Explanation:

temperature changes affect seawater density as water cools its density increases. As water cools H2O molecules pack more closely together because the molecules are vibrating less at low temperatures and take up less volume. The same number of water molecules in smaller volume results higher density

According to the forces of attraction when temperature decreases the molecules in water come closer and as a result of which forces of attraction go stronger and salinity increases.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Answer:

Well, by definition,

molarity = moles of solute

               volume of solution

Explanation:

Now the moles of solute are a constant. The volume of solution MAY change substantially with increasing or decreasing temperature. In some calculations molality is used in preference, which is defined by the quotien

Hope this helps!

1/6 moles of fe2 (aq) reacted with the cr2o7 2-.

A redox couple's ability to reduce gets stronger with a larger H+ concentration, making the reduction process simpler. The presence of so many H+ ions facilitates the reduction reaction since the reducing element desires them throughout the reduction process.

By supposing that almost all bonds to the atoms in molecules are ionic, we may use the oxidation numbers that are assigned to them to detect redox processes. In a reaction, oxidation is shown by a rise in the number of oxidations, whereas reduction is indicated by a drop.

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Answer:

the first thing you do is do your experiment then title it. then state the purpose of the experiment. included a summary of the experiment. make a list of the materials you used. present all the steps in order to make the experiment possible. note any changes to the original procedure. this is basically the steps you have to do in order to make your scientific experiment.

Answer:

Cool flows down-warm flows up

Explanation:

Answer:

The answer for 10 times 20 is 200

Explanation:

Why... Because what is 1 times 2=2 so add the left over zero I'm that your answer!

Answer:

No

Explanation:

I'm not educated enough on the matter but from what I've been taught water boils at 100 Celsius and it simultaneously evaporates.

The pair that is not a conjugate base-acid pair is: HSO₄⁻ : SO₂⁻⁴. Option 4 is correct.

HSO₄⁻ is the conjugate base of H₂SO₄ (sulfuric acid), and SO₂⁻⁴ is not a valid acid because it has a charge of -2 and cannot donate a proton (H⁺). Therefore, HSO₄⁻ and SO₂⁻⁴ do not form a conjugate base-acid pair.

A conjugate base is the species that remains after a Bronsted-Lowry acid has donated a proton (H⁺). It is formed when an acid loses a proton and the resulting species has one less positive charge.

For example, in the reaction;

HA + H₂O ↔ A⁻ + H₃O⁺

HA is the acid and donates a proton to H₂O, which acts as a base to form the conjugate base A-. The species A⁻ is the conjugate base of the acid HA.

Hence, 4. is the correct option.

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Answer:

A synthesis reaction occurs when two or more reactants combine to form a single product in a double replacement reaction two compounds exchange elements. Combustion reaction occurs when a substance reacts quickly with oxygen combustion is commonly called burning. Example'- for synthesis reaction is iron+ oxygen —≥ water . Example:- for combustion reaction is often gaseous products.

may be this was ur answer I hope it might help u

A chemical change occurs when there is a bond breaking or bond making. A phase change, change in phase and or change in shape does not make a chemical change. A chemical change can be indicated by the heat given off by a reaction or change. Thus, option a is correct.

There are broadly two types of change occurs for a substance namely chemical change or physical change. A physical change is a change in state or phase involves no formation products or breaking of bonds. For example melting of a solid to liquid and boiling of liquid to gas etc.

In a chemical change there makes a bond breaking or making to form a new product. All chemical reactions such as combination reactions, decomposition, displacements etc. are chemical changes.

Every chemical change is associated with an enthalpy of heat energy that is absorbed or released by the system. Thus heat given off is an indication of a chemical change. Hence, option A is correct.

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The calcium ion has 18 protons, 20 neutrons, and 20 electrons.
The relationship between the components a and b is Inverse proportion.


The calcium ion (Ca2+) has a 2+ charge, indicating that it has lost 2 electrons from its neutral state. To determine the number of protons, neutrons, and electrons in the calcium ion, we need to consider its atomic number and mass.

The atomic number of calcium is 20, which indicates that it has 20 protons. Since the calcium ion has a 2+ charge, it means it has lost 2 electrons. Therefore, the number of electrons in the calcium ion is 20 - 2 = 18.

The mass number of calcium is 40 amu, which represents the total number of protons and neutrons. Since the calcium ion has 20 protons, the number of neutrons can be calculated as 40 - 20 = 20.

So, the correct option is: d. 18 protons, 20 neutrons, and 20 electrons

In the expression a∼1/b, the relationship between the components a and b is an inverse proportion. This means that as the value of a increases, the value of b decreases, and vice versa. The symbol ∼ represents the proportional relationship between a and 1/b, indicating that they are inversely related. Therefore, the correct answer is: Inverse proportion

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The resulting acceleration of proton, compared to the electron's acceleration is in the opposite direction and at a similar rate.

Being a vector quantity, acceleration includes components in both the x- and y-axes. By computing the vector's magnitude and direction, we can determine the object's final acceleration.

Because the mass of the proton is greater than the mass of the electron, the acceleration of the proton will be in the opposite direction and at a similar rate. However, the proton's acceleration is smaller in comparison to the electron's acceleration.

In conclusion, when compared to the electron's acceleration, the proton's subsequent acceleration would be smaller in amplitude and in the opposite direction.

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Assuming ideal behavior, the gas sample with the greatest volume at STP (Standard Temperature and Pressure) are all above 1g of kr, 1g of ne, and 1g of o2

would be the one with the highest number of moles, as volume is directly proportional to the number of moles. To compare the number of moles in each sample, we need to use the ideal gas law equation, PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature.

At STP, temperature is 273 K and pressure is 1 atm. By rearranging the equation to solve for n, we get n = PV/RT. Plugging in the values for each sample, we get n(kr) = 1(1)/0.08314(273) = 0.044, n(ne) = 1(1)/0.08314(273) = 0.044, and n(o2) = 1(1)/0.08314(273) = 0.044. Therefore, all three samples have the same number of moles and will occupy the same volume at STP.

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Answer:

Electrons, Protons, and Neutrons. ... Protons are another type of subatomic particle found in atoms. They have a positive charge so they are attracted to negative objects and repelled from positive objects. Again, this means that protons repel each other

The order in which the substances will reach 90.0°C is; Ag, Zn, Fe, Al.

The term specific heat capacity refers to the quantity of heat that is required to raise the temperature of an object by 1K. The higher the heat capacity, the greater the heat that is required for the object to reach 90.0°C.

The order in which the substances will reach 90.0°C is; Ag, Zn, Fe, Al. We can see that Ag has the lowest heat capacity and the first to reach 90° while All has the highest heat capacity and the last to reach 90°.

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Answer:

Protons: 22

Neutrons: 26
Electrons: 22

Explanation:

Titanium's atomic number is 22, meaning that the number of protons it has in its nucleus is also 22. # of electrons = # of protons, so the number of electrons is also 22. Titanium has an atomic mass of 47.867, but we can round up to 48. To find the atomic mass, we add up number of protons and neutrons. We know the number of protons as 22, so we subtract 22 from 48 and get a number of 26. Thus, the number of neutrons is 26.

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Answer:

C2H4

Explanation:

cause the compound of ethylene is C2H4

Ethylene is a hydrocarbon gas with the chemical formula C₂H₄. It is a simple molecule that consists of two carbon atoms and four hydrogen atoms and is also known as ethene. The skeletal structure is CH₂=CH₂.

Ethylene is a colorless and odorless gas that is the simplest member of the olefin class of hydrocarbons, with the chemical formula C₂H₄. It is an important organic compound and is widely used in industry.

Ethylene is primarily used to produce polyethylene, which is one of the most common plastic materials in the world. It is also used as a fuel in some industrial processes, as a refrigerant, and as a precursor to other chemicals.

It is an important plant hormone and is involved in various physiological processes such as fruit ripening, senescence, and abscission. Ethylene is naturally produced by plants, but it can also be produced artificially and is commonly used in agriculture to ripen fruits and vegetables.

Thus, the ethylene compound is CH₂=CH₂.

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No the major product does not depend on whether we start with the r or s enantiomer of the reactant.

Generally, a stereospecific reaction is defined as the reaction in which different stereoisomers react to give different stereoisomers of the product. Lets consider an example, if the substrate is an R enantiomer, a frontside nucleophilic attack results in retention of configuration, and the formation of the R enantiomer.

Basically a counterclockwise or anticlockwise direction is an S (sinister, In Latin for left) configuration and a clockwise direction is an R (rectus, In Latin for right) configuration. R or S of the enantiomer usually don't apply any impact on the major product formed.

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