What role do wolves play in the tundra?

Answer:

The sun provides most of the energy on earth because it is the earth's (and the solar system's) greatest source of heat and light.

Explanation:

The process of photosynthesis in plants uses the energy from the sun and converts that energy to be used for plants.
The burning of fossil fuels produces greenhouse gases which trap the heat in our earth's atmosphere (causing global warming).

Answer: Less

Explanation:

Ethane is a non-polar molecule while water is a polar molecule

Ba(NO₃)₂ has the following percentage composition: 52.6% Ba, 10.7% N, and 36.7% O.

The molar mass of Ba(NO₃)₂ is:

Ba: 1 x 137.33 g/mol = 137.33 g/mol

N: 2 x 14.01 g/mol = 28.02 g/mol

O: 6 x 16.00 g/mol = 96.00 g/mol

Adding these up gives us a total molar mass of 261.35 g/mol.

The mass percent of each element is then:

Ba: (137.33 g/mol / 261.35 g/mol) x 100% = 52.6%

N: (28.02 g/mol / 261.35 g/mol) x 100% = 10.7%

O: (96.00 g/mol / 261.35 g/mol) x 100% = 36.7%

Therefore, the percentage composition of Ba(NO₃)₂ is: 52.6% Ba, 10.7% N, and 36.7% O.

Find out more on percentage composition here: https://brainly.com/question/26632540

#SPJ1

The solubility of a substance tells us the amount of solute that is capable of dissolving a given amount of solvent at a given temperature. We speak that a solution is.

Now, if the amount is less than the statement says, it will be an unsaturated solution.

When the amount is greater, the solution is supersaturated and a precipitate of solute will form in the solution.

According to what has been explained, the solution described by the statement is an unsaturated solution.

Answer: Unsaturated

To increase the gravitational force between the balloon and the golf ball, It should be filled with lead pieces. Option D

A substance's density, which measures its mass in relation to its volume, determines how much gravitational force it produces.

Lead bits are one of the suggested materials, and they are the one that would most likely boost the gravitational force. The density of lead is much higher than that of the other listed materials.

The high density of lead will result in an increase in the gravitational pull between the balloon and the golf ball if Jamie fills the balloon with lead bits.

Learn more about density:https://brainly.com/question/29775886

#SPJ1

The number of moles of sulfur in the compound is 2 moles and the empirical formula of the compound is CS₂.

To determine the empirical formula, we need to find the mole ratios of the elements present in the sample.

First, we need to convert the mass of each element to moles using their respective atomic masses. The atomic mass of C is 12.01 g/mol and the atomic mass of S is 32.07 g/mol.

Number of moles of C = 7.90 g / 12.01 g/mol = 0.657 moles

Number of moles of S = 42.1 g / 32.07 g/mol = 1.31 moles

Therefore, there are 1.31 moles of S in the sample.

To determine the empirical formula, we need to find the simplest whole number mole ratio between C and S. We can do this by dividing the number of moles of each element by the smallest number of moles.

Dividing both moles of C and S by 0.657 gives:

Number of moles of C = 1.00 moles

Number of moles of S = 1.99 moles

The empirical formula is therefore CS₂.

Learn more about empirical formula at: https://brainly.com/question/13058832

#SPJ1

The significance of the point where the pressure drops to zero is that at that point the gases would completely show ideal behavior.

The gas laws can be used to describe the behavior of the ideal gases. It is pertinent to note that the ideal gas law can strictly be applied to gases that are at a high temperature and low pressure.

We can be able to find the  temperature when the pressure is equal to zero either be the use of the equation line or by experiment. In that case, we would be able to obtain the point at which the pressure drops to zero.

The significance of the point where the pressure drops to zero is that at that point the gases would completely show ideal behavior.

Learn more about idea gas:https://brainly.com/question/4194158

#SPJ1

Answer:

5.1  x 10⁻¹

Explanation:

Given:

6.4 × 10⁻³ × 8.0 × 10¹

Find:

Value of equation

Computation:

6.4 × 10⁻³ × 8.0 x 10¹

[6.4 × 8.0] × [10⁻³ × 10¹]

[51.2] × [10⁻²]

5.12 x 10⁻¹

5.1  x 10⁻¹ (Approx)

Answer:

Hydrogen H 3.330% Carbon C 26.450% Oxygen O 35.234%

Explanation:

Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

for more questions on luminous

https://brainly.com/question/27163038

#SPJ8

Answer: The absorbance for a solution is 0.0028

Explanation:

To calculate the absorption of a solution, the equation by Beer-Lambert law is used:

\(A=\varepsilon \times b\times C\)

OR

\(A=\varepsilon \times b\times \frac{\text{Given mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (mL)}}\)

where,

A = absorbance = ?

\(\varepsilon\) = molar absorptivity = \)15000m^2mol^{-1}L\)

b = path length = 1 cm = 0.01 m                 (Conversion factor: 1 m = 100 cm)

Given mass of \(\beta-\) carotene = 0.1 mg = 0.0001 g     (Conversion factor: 1 g = 1000 mg)

Molar mass of \(\beta-\) carotene = 536 g/mol

Volume of solution = 10 mL

Putting values in equation 1:

\(A=15000\times 0.01\times \frac{0.0001\times 1000}{536\times 10}\\\\A=0.0028\)

Hence, the absorbance for a solution is 0.0028

First of all finding the pressure, again we will be assuming an ideal pressure of 1 atm, this will be our total pressure, now we have to find the partial pressure for H2. The partial pressure for H2O is related to its temperature, when it's 40°C we will have a pressure of 55.37 torr, which is 0.0728 atm

Ptotal = Ph2 + Ph2o

1 atm = Ph2 + 0.0728 atm

Ph2 = 0.927 atm

Now we will add this information to our Ideal Gas law formula:

PV = nRT

0.927 * 0.081 = n * 0.082 * 313

0.075 = 25.66n

n = 0.003 moles

H2 = 2.0158g/mol

0.003 moles of H2 = 6.0*10^-3

Answer:

0.46 mole

Explanation:

Ag is silver in which 1 mole equals 107.87 g

so 50.00 mg of Ag will have 50.00/107.87 = 0.46 mole

Answer:

Yes, displacement is 45 meters, time is three seconds, and the direction is toward the goal. Velocity is 15 m/s towards the goal.

Explanation:

Hope this helped!

Some types of solids that are insoluble in water are:

Many solids are insoluble in water, meaning they do not dissolve in water to a significant extent. Here are some examples of common solids that are generally insoluble in water:

Metals: Most metals, such as gold, silver, platinum, and copper, are insoluble in water.

Non-Metallic Elements: Many non-metallic elements, such as carbon (in the form of graphite or diamond), sulfur, phosphorus, and iodine, are insoluble in water.

Metal Oxides: Some metal oxides, particularly those of less reactive metals, are insoluble in water. Examples include aluminum oxide (Al2O3), iron(III) oxide (Fe2O3), and lead(II) oxide (PbO).

Metal Carbonates: Most metal carbonates are insoluble in water. Examples include calcium carbonate (CaCO3), lead(II) carbonate (PbCO3), and copper(II) carbonate (CuCO3).

Metal Sulfides: Many metal sulfides are insoluble in water. Examples include lead(II) sulfide (PbS), silver sulfide (Ag2S), and mercury(II) sulfide (HgS).

Insoluble Salts: Certain salts have limited solubility in water. Examples include silver chloride (AgCl), lead(II) iodide (PbI2), and calcium sulfate (CaSO4).

It's important to note that while these solids are generally insoluble in water, they may exhibit some solubility to a small extent. The solubility of a solid in water can vary depending on factors such as temperature, pressure, and the presence of other solutes.

Learn more about solubility:

https://brainly.com/question/23946616

#SPJ1

1. The IUPAC name of N is nitrogen.

2. Nitrogen dioxide

3.The IUPAC name of O is oxygen

4.The IUPAC name of OH is hydroxyl.

The IUPAC name of ·0 is a radical. It is commonly found in organic chemistry and plays an important role in many reactions.

IUPAC names for the given compounds are:1.1. N: Nitrogen

The IUPAC name of N is nitrogen.

It is a non-metal and belongs to group 15 in the periodic table. It has an electronic configuration of 1s2 2s2 2p3.1.2. NO2: Nitrogen dioxide

Explanation: NO2 is a chemical compound that is formed by the combination of nitrogen and oxygen. It is a reddish-brown gas that has a pungent odor.

The IUPAC name of NO2 is nitrogen dioxide.1.3. O: Oxygen

Explanation: The IUPAC name of O is oxygen.

It is a non-metal and belongs to group 16 in the periodic table. It has an electronic configuration of 1s2 2s2 2p4.

X: UnknownExplanation: No IUPAC name can be given to an unknown compound as the structure and composition are not known.

Y: Hydroxyl Explanation: The IUPAC name of OH is hydroxyl.

It is a functional group that is composed of an oxygen atom and a hydrogen atom (-OH). It is commonly found in alcohols and phenols. ·0: RadicalExplanation: A radical is a molecule or an ion that contains an unpaired electron.

for more question on electronic configuration

https://brainly.com/question/26084288

#SPJ8

Note: The complete question is given below

Provide the IUPAC names for the following compounds:

\(CH_3CH_2CH(CH_3)CH_2CH_2CH_2CH_3\)

C6H5CH(CH3)2

H2NCH2CH2CH2CH2CH2NH2

CH3CH2CH2CH2CH2OH

CH3CH2CH2CHOHCH3

Answer:

Q < Ksp

Explanation:

The general equilibrium of a constant product solubility, ksp, is:

AB ⇄ A⁺ + B⁻

Where Ksp is defined as:

Ksp = [A⁺] [B⁻]

When [A⁺] [B⁻] = Ksp, the solution is saturated or oversaturated because there are the maximum amount of ions that solution can dissolve.

When the solution is oversaturated, AB is produced.

Now, in a unsaturated solution, the [A⁺] [B⁻] is less than the maximum amount that can be dissolved. That means:

[A⁺] [B⁻] = Q < Ksp

Q is defined in the same way than Ksp, just in Q the system is not in equilibrium.

Right answer is:

The  mathematical relationship for an unsaturated solution in comparing Q with K sp is Q < Ksp.

Since

The general equilibrium of a constant product solubility, ksp, should be

AB ⇄ A⁺ + B⁻

Here. Ksp is defined as:

Ksp = [A⁺] [B⁻]

At the time When [A⁺] [B⁻] = Ksp, the solution should be saturated or oversaturated since there are the maximum amount of ions that solution can dissolve.

When the solution is oversaturated, AB is produced.

Now, in a unsaturated solution, the [A⁺] [B⁻] is lower than the maximum amount that can be dissolved. That means [A⁺] [B⁻] = Q < Ksp

Learn more about solution here: https://brainly.com/question/21960832

The balanced equation for the following redox reaction using the oxidation number method is as follows:

2K + 2I− + Cl 2 → I2 +2Cl− +2K+

A redox reaction in chemistry is a chemical reaction in which some of the atoms have their oxidation number changed.

According to this question, the following balanced chemical equation is given:

Cl2 (g) + KI (aq) → I2 (s) + KCl (aq)

The oxidation number of the ions in a redox reaction changes, and in this case, the ionic reaction is as follows:

2K + 2I− + Cl 2 → I2 + 2Cl− +2K+

Learn more about redox reaction at: https://brainly.com/question/13293425

#SPJ1

Answer:

hugsvsbsbbsnjsjsnsbsbbzbd

1 Human activities may be varied by the addition of freshwater because it can determine/vary what food, crops, and sea animals that come into the area. Additionally, it has determined when civilizations have thrived and begun or unfortunately fail and in extreme measures go extinct.

2 Practices that can help us as human beings include showers, drinking water, washing hands, etc. When we use some of these examples they help us keep clean and live life with a low risk of sickness.

Answer: 1.1 kg

Explanation:

Mw CO2 is 44g —> 6.02214076*10^23 molecules

1.5*10^25 molecules —> 1.1 kg

Answer:

all of the above

Explanation:

i got the answer right on cK-12

If we add more magnesium to the reaction, the reaction speed will increase.

The chemical reaction shown is a single-displacement reaction, also known as a single-replacement reaction. In this type of reaction, one element replaces another element in a molecule, producing a new compound and a different element.

In the given reaction, magnesium (Mg) reacts with sulfuric acid (H₂SO₄) to produce magnesium sulphate (MgSO₄) and hydrogen gas (H₂). This can be represented by the following balanced chemical equation:

Mg + H₂SO₄ → MgSO₄ + H₂

This is because the amount of reactant determines the number of reactions that can occur. If the amount of magnesium is increased, more magnesium atoms are available for the reaction with sulfuric acid, leading to a higher rate of reaction.

However, this increase in reaction rate is only valid up to a certain point, after which further addition of magnesium will not lead to an increase in rate of reaction. This is because other factors such as the concentration of sulfuric acid and the temperature of the reaction may become limiting factors that can no longer be compensated by adding more magnesium.

For such more questions on magnesium

https://brainly.com/question/19223717

#SPJ11

Answer:

56.96 grams

Explanation:

To find the mass of 1.78 moles of O2, we need to use the molar mass of O2, which is the mass of one mole of O2.

The chemical formula for O2 is O-O or simply O2. The molar mass of O2 is the sum of the atomic masses of two oxygen atoms, which can be found on the periodic table.

The atomic mass of oxygen (O) is approximately 16.00 g/mol. So the molar mass of O2 is:

Molar mass of O2 = 2 x atomic mass of O

= 2 x 16.00 g/mol

= 32.00 g/mol

Therefore, the mass of 1.78 moles of O2 is:

Mass = number of moles × molar mass

= 1.78 mol × 32.00 g/mol

= 56.96 g

So the mass of 1.78 moles of O2 is 56.96 grams.

The biological molecule made of only C, H and O with a molar ratio of 1:2:1 is Carbohydrates, and the most commonly known one is glucose, which is the monomer to build large carbohydrate compounds, the chemical formula for glucose is C6H12O6