plesae answer this for me!!!

before 11 9 this is needed before

Answer:

47,070J

Explanation:

Because we use the formula

Eh= m×c×∆T

Which is energy required equals mass times specific heat capacity times change in tempreture (final temp - initial temp )

The location of a planet within the solar system influences its orbital characteristics, motion, and temperature, shaping its unique environmental conditions and behaviors.

Shape of orbit: The location of a planet determines the shape of its orbit around the Sun. Planets closer to the Sun, such as Mercury and Venus, have elliptical orbits with smaller eccentricities.

In contrast, planets farther from the Sun, like Mars and Jupiter, have more circular orbits. The shape of the orbit influences the planet's distance from the Sun at different points during its revolution, impacting factors such as temperature and intensity of sunlight.

Motion: The location of a planet affects its motion within the solar system. Planets closer to the Sun have higher orbital speeds, as they experience stronger gravitational forces.

They complete their orbits more quickly compared to planets farther away. Additionally, the location within the solar system determines the direction of a planet's motion—whether it orbits in the same direction as the Sun's rotation (prograde motion) or in the opposite direction (retrograde motion).

Temperature: The location of a planet in the solar system plays a significant role in determining its temperature. Proximity to the Sun affects the amount of solar radiation received by a planet.

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Algae blooms are most often caused by eutrophication.

Algae blooms are are dense layers of tiny green plants that occur on the surface of lakes and other bodies of water when there is an overabundance of nutrients (primarily phosphorus) on which algae depend.

Algae species tend to proliferate in growth (bloom) in the presence of abundance nutrients. This abundance of nutrients is as a result of a process called eutrophication.

Eutrophication is the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

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The null hypothesis is rejected when the chi-square value is higher than the critical value or p-value. In this case, the chi-square value of 6.4 is higher than the critical value for a p-value of 0.05, which is 3.84. Therefore, the null hypothesis is rejected.

A cross results in three phenotypes. A null hypothesis of recessive epistasis is tested. Your calculated chi-square value is 6.4. Assuming a p-value of 0.05, do you reject the null hypothesis?The answer is yes.What is a chi-square value?A chi-square value is a measure of how different two sets of data are. It compares the observed data to the expected data and generates a statistic that shows how far apart they are. It compares the observed data to the expected data and generates a statistic that shows how far apart they are. The chi-square test is a statistical hypothesis test that is used to determine if there is a significant difference between two groups of data. The null hypothesis is rejected when the chi-square value is higher than the critical value or p-value. In this case, the chi-square value of 6.4 is higher than the critical value for a p-value of 0.05, which is 3.84. Therefore, the null hypothesis is rejected.

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Electron configuration of Cu - [Ar] 3d¹⁰ 4s¹

Electron configuration of F - [He] 2s2 2p5

Electron configuration of K - [Ar] 4s¹

We have to note that the electronic configuration of the atom has to do with the way that electrons are arranged in the orbitals of the atom. We know that the electrons are arranged in orbitals and that the orbits as well as the orbitals are found to be at various energy levels.

The quantum numbers has to do with the numbers that can help us to describe the position of the electron that is present in the atom.

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Answer:

Ksp= 7.98 × 10^-13

Explanation:

According to the question, we are to calculate the solubility constant (Ksp) of Zinc carbonate (ZnCO3) in a dissolved solution.

The equilibrium of the reaction is:

ZnCO3 (aq) ⇌ Zn2+ (aq) + CO32- (aq)

According to this; 1 mole of Zinc carbonate (ZnCO3) dissolves to give 1 mole of Zinc ion (Zn2+) and 1 mole of carbonate ion (CO32-).

This illustrates that:

(Zn2+) = 1.12 x 10-4 g/L

(CO32-) = 1.12 x 10-4 g/L

However, 1.12 x 10-4 g/L is the solubility in mass concentration of ZnCO3, we need to convert it to molar concentration in mol/L by dividing by the relative molar mass of ZnCO3.

To calculate the molar mass of ZnCO3, we say:

Zn (65.4) + C (12) + 03 (16×3)

= 65.4+12+48

= 125.4g/mol.

Hence, molar concentration= 1.12 x 10-4 g/L / 125.4 g/mol

= 8.93 × 10^-7 mol/L.

Therefore;

Zn2+) = 8.93 x 10-7 mol/L

(CO32-) = 8.93 x 10-7 mol/L

Ksp = [Zn2+] [CO32-]

Ksp = (8.93 x 10-7) × (8.93 x 10-7)

Ksp = 7.98 × 10^-13

Svante Arrhenius, as a doctoral candidate, proposed the acid-base theory, which initially faced skepticism from his professors who thought his ideas were unfounded. However, within a decade, the Arrhenius theory was widely accepted and praised in the scientific world. In his theory, Arrhenius defined acids as compounds having ionizable hydrogen, and bases as compounds with ionizable hydroxide ions (OH-).

Arrhenius proposed his theory of acids and bases in 1884 as part of his doctoral thesis. At the time, his ideas were met with skepticism and criticism from his professors and peers, who were more accustomed to the older, classical theories of acids and bases.

However, Arrhenius's theory was eventually accepted and became widely praised within the scientific community. This was in part due to the experimental evidence that supported his theory and the way that it could be used to explain a wide range of chemical phenomena.

In Arrhenius's theory, an acid is a substance that dissociates in water to produce hydrogen ions (H+), while a base is a substance that dissociates in water to produce hydroxide ions (OH-). This theory provided a new and more comprehensive understanding of the behavior of acids and bases and laid the foundation for further research in this area.

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Explanation:

______________________

The mass of nitrogen gas in the sample is 0.001355 g and the number of molecules of nitrogen gas in the sample is 2.91 x 10¹⁹ molecules.

At STP (Standard Temperature and Pressure), the temperature is 0°C (273.15 K) and the pressure is 1 atm (101.325 kPa).

Ideal gas law is: PV = nRT

Where P will be the pressure, V will be the volume, n is number of moles, R is the ideal gas constant, and T will be the temperature.

At STP, the value of R is 0.0821 L·atm/mol·K.

The volume of the nitrogen gas sample is 1120 cm³, which is equivalent to 0.00112 m³.

Using the ideal gas law;

n = PV/RT

n = (1 atm) x (0.00112 m³) / (0.0821 L·atm/mol·K x 273.15 K)

n = 0.0000483 moles of nitrogen gas

To calculate the mass of nitrogen gas, we use the molar mass of nitrogen, which is 28.02 g/mol.

Mass of nitrogen gas = n x molar mass

Mass of nitrogen gas = 0.0000483 moles x 28.02 g/mol

Mass of nitrogen gas = 0.001355 g

To calculate the number of molecules of nitrogen gas in the sample, we use Avogadro's number, which is 6.022 x 10²³ molecules/mol.

Number of molecules of nitrogen gas = n x Avogadro's number

Number of molecules of nitrogen gas = 0.0000483 moles x 6.022 x 10²³ molecules/mol

Number of molecules of nitrogen gas = 2.91 x 10¹⁹ molecules

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Giant molecules are also referred to as macromolecules and polymers when numerous molecules are combined. These atoms are arranged in a three-dimensional structure and are joined by covalent bonds.

A giant molecule, also known as a macromolecule, is a usually large molecule crucial to biophysical processes, such as a protein or nucleic acid. It is made up of many atoms that are covalently bound. Large non-polymeric molecules including lipids and macrocycles, as well as biopolymers, are the most prevalent macromolecules in biochemistry. In addition to synthetic fibers, giant molecules can also be found in research materials like carbon nanotubes.

Different experts use different terminology for giant molecules. For instance, in biology, giant molecules refer to the four immense molecules that make up living things, while in chemistry, it refers to aggregates of two or more molecules that are held together by intermolecular forces rather than covalent bonds yet that is difficult to dissolve apart. The term giant molecule is frequently referred to as high polymer in British English.

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Answer: left and right hemisphere ya

Explanation:

Answer: there are 12 electrons 12 protons and 12 neutrons.

i hope this helps.

Answer:

A. 15

Explanation:

From the equation we see that 6 water particles are used to make 1 particle of the hexose.

That means, that to make 1 mole of the hexose, we need 6 moles of water (as a mole is an unit of count of particles).

To make 2.5moles of the hexose, we need 2.5*6 moles of water, so 15 moles of water.

Answer:

its B

Explanation:

I took the test and its that passage way thing. (tell me if this works for you! it will but just wanna make sure!)

Exothermic changes give out energy to their surroundings, causing an increase in heat endothermic changes, take in energy, so the opposite takes place.

Answer:

5.4

Explanation:

V1=5.0

T1=25+ 273=298

V2= z(unknown)

T2=5+273=278

V1/T1 =V2/T2

V2=V1T2/T1

=5*298/278

=5.4

Answer:

a gas at very low temperatures, when gas particles have very little kinetic energy

Explanation:

Answer:

B, C, and E!

Explanation:

got it correct on edge! :)

Answer:

B.  Cl.

Explanation:

These are Group  7 elements whose reactivity reduces as you go down the group. Chlorine  has a smaller atoms than the rest and has a stronger  tendency to grab an electron in its valency shell. This is because its nucleus is closer to the outer electrons than the other elements.

Answer:the number of electrons is equal to the number of protons in a neutral atom that is. In a cation or anion atom you either gain or lose electrons. Let’s say it’s a cation +3 you lose 3 electrons. Now let’s say it’s an Anion -3 you gain 3 electrons. Hope this helps.

Explanation:

Explanation:

1.) 6Li + Al2(CO3)3 -----> 3Li2CO3 + 2Al

From the stoichiometry of the equation,

6 moles of Li reacts with 1 mole of Al2(CO3)3

x of Li will react with 1.64 moles of Al2(CO3)3

=> x = (1.64 × 6) ÷ 1

=> x = 9.84 moles of Li

2.) 2Mg + N2 -----> 2MgN

2 moles of Mg react completely with 14 g of N2

4.226 moles of Mg will react with x of N2

=> x = (4.226 × 14) ÷ 2

=> x = 29.582 g of N2

3.) 8Fe + S8 -----> 8FeS

256 g of Sulphur give 8(56 + 32)g of FeS

16 g of Sulphur will give x of FeS

=> x = (16 × 704) ÷ 256

=> x = 44 g of FeS

256 g of Sulphur react with 8(56)g of Fe

16 g of Sulphur will react with x of Fe

=> x = (16 × 8 × 56) ÷ 256

=> x = 28 g of Fe

4.) B2H6 + 3O2 -----> HBO2 + 2H2O

27.6 g of B2H6 burn in 3(32)g of O2

31.6 g of B2H6 will burn in x of O2

=> x = (31.6 × 3 × 32) ÷ 27.6

=> x = 109.9 g of O2

27.6 g of B2H6 produce 2 moles of H2O

12.8 g of B2H6 will produce x of H2O

=> x = (12.8 × 2) ÷ 27.6

=> x = 0.93 moles of H2O

Answer:

500N/m²

Explanation:

The Pressure can be calculated using the formula:

P = F/A

Where;

F = force (N)

A = Area (m²)

Based on the information provided in the question, F = 30N, A = 0.06m²

P = F/A

P = 30/0.06

P = 500N/m²

Answer:

b. 2-4

Explanation:

Look at the slope of the line, between 0-2 and 4-6 the slope is only 10, but between 2-4 the slope is 20, so that's when the temperature is changing the fastest. In the same time it took for the water to increase by 20 degrees between 0-2 and 4-6, the temperature of the water increased by 40 degrees between 2-4 so that's when the change is the fastest.

Answer:

a is the answer I know and if I'm right mark me brainlest

An electric field is produced when high voltage is applied to capacitor plates, deflecting cathode rays. The negatively charged electrons are directed away from the negatively charged plate and toward the positively charged plate when a cathode ray is transmitted through this electric field.

Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations

Voltage, current, and resistance are the three most fundamental elements of electricity. Voltage is comparable to the force that forces water through a hose. It is expressed as volts (V). CURRENT is comparable to the hose's diameter.

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Answer:

its B, E, F

Explanation:

on edge 2021

Answer:

2. Doug supervises Jailers and makes sure their work meets standards.

5. Rudy monitors people who are on probation and parole.

6. Nancy guards inmates in a prison.

it is not table salt

Explanation:

Table salt dissolves in water.

Explanation:

cooked rice

nutrient

carbohydrate.

Boiler eggs

nutrient

Protein.