What does infrared radiation give off more energy than radiowaves?

The fact that an airplane flying due east from an airport will eventually return to its starting point indicates that the Earth is a sphere due to the curvature of the Earth's surface.

How can an airplane flying due east provide evidence for the shape of the Earth?

By continuing to fly east, and with enough fuel, the airplane will eventually reach the same airport it started from. The longest eastward journey would occur from an airport located at one of the Earth's poles. Very short journeys would occur near the equator.

The fact that the airplane returns to its starting point indicates that the Earth is a sphere, as it would not be possible on a flat plane. This phenomenon is due to the curvature of the Earth's surface, which causes the plane's trajectory to follow a circular path along the Earth's surface.

To learn more about airplane, visit: https://brainly.com/question/28502555

#SPJ1

Answer:

PLZZ like it tuk me to long to explan

Explanation:

The reaction between zinc and sulfur can be shown in what is called a chemical equation .  In words, we could write the reaction as:

zinc + sulfur → zinc sulfide

The more convenient way to express a chemical reaction is to use the symbols and formulas of the substances involved:

Zn + S → ZnS

The substance(s) to the left of the arrow in a chemical equation are called reactants.  A reactant is a substance that is present at the start of a chemical reaction.  The substance(s) to the right of the arrow are called products .  A product is a substance that is present at the end of a chemical reaction.  In the equation above, the zinc and sulfur are the reactants that chemically combine to form the zinc sulfide product.

There is a standard way of writing chemical equations.  The reactants are all written on the left-hand side of the equation, with the products on the right-hand side.  An arrow points from the reactants to the products to indicate the direction of the reaction:

reactants → products

When appropriate, a symbol may be written above or below the arrow to indicate some special circumstance.  The symbol “Δ” is often used to indicate that the reaction is to be heated.

The presence of the arrow also indicates that the reaction goes in one direction under the conditions indicated.  There are reactions which can be easily reversed, but we will not take those up right now.

There are a wide variety of reactions possible: elements may form compounds (as seen in the reaction above), compounds may form elements (water will break down in the presence of an electric current to form hydrogen gas and oxygen gas) or compounds may combine, break apart, or rearrange to form new materials.

Answer:

B.  melting point

Explanation:

The melting point is the same as the freezing point.  This temperature is when a liquid freezes and becomes a solid, and it is also when a solid melts and becomes a liquid.  This is why freezers are set at temperatures lower than the freezing point of water.

Answer:

boiling point

Explanation:

hope this helps

Assuming a similar number of molecules, the matter that occupies the most space is gas. Option C is correct.

This is because gases have no definite shape or volume, and their molecules are spread out, moving freely in all directions. As a result, gases tend to occupy the entire volume of their container and expand to fill the available space. This is known as the "kinetic molecular theory" of gases.

In contrast, solids and liquids have a definite volume and shape. Solids have a fixed shape and their molecules are packed closely together, while liquids have a variable shape and their molecules are less closely packed. As a result, both solids and liquids occupy less space than gases.

It is worth noting that the volume of a solid or liquid can change under certain conditions, such as changes in temperature or pressure. However, even under these conditions, the space occupied by a solid or liquid is still less than that occupied by a gas. Option C is correct.

The complete question is

Which of the following matters occupies more space, assuming similar number of molecules?

A. Solid

B. Liquid

C. Gas

D. Solid and gas

To know more about the Matter, here

https://brainly.com/question/30028447

#SPJ1

Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

For more such questions on compounds

https://brainly.com/question/704297

#SPJ8

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

for more question on NaCl

https://brainly.com/question/23269908

#SPJ8

The "Wakanda speech," six weeks have passed, and the world is still in shock.

Thus, Global leaders and analysts were taken aback by King T'Challa's declaration at the United Nations General Assembly that the Kingdom of Wakanda is not a developing country of textiles, farms, and shepherds with a GDP per person of roughly $760 but rather a technological superpower and Wakanda speech.

The country's widespread employment of cutting-edge magnetic levitation trains, flying machines, opaque holograms, and spinal cord-healing beads has led to the coining of the phrase "uber-developed" nation.

The most watched video ever is currently "Welcome to the Future," an introduction video created by Wakanda's recently established Ministry of Foreign Affairs.

Thus, The "Wakanda speech," six weeks have passed, and the world is still in shock.

Learn more about Wakanda, refer to the link:

https://brainly.com/question/31162803

#SPJ1

Answer:

b I think it is the correct answer

The moles of silver iodide produced are 5.00 moles.

Given:

The balanced chemical equation:

\(MgI (aq)+2AgNO_3 (aq)\rightarrow 2 Agl(s) + Mg(NO_3)_2(aq)\)

To find:

The moles of silver iodide produced when 2.50 moles of magnesium iodide react with sufficient silver nitrate.

Solution:

Moles of magnesium iodide = 2.50 mol

\(MgI(aq) +2AgNO_3 (aq)\rightarrow 2 Agl(s) + Mg(NO_3)_2(aq)\)

According to the reaction, 1 mole of magnesium iodide gives 2 moles of silver iodide, then 3.50 moles of magnesium iodide will give:

\(=\frac{2}{1}\times 2.50 mol=5.00 \text{mol of AgI}\)

The moles of silver iodide produced are 5.00 moles.

Learn more about the unitary method here:

brainly.com/question/4147368?referrer=searchResults

brainly.com/question/2499283?referrer=searchResults

Answer:

One difference between Group 7 of the modern periodic table and Group 7 in Mendeleev's periodic table is the placement of the elements.

In Mendeleev's periodic table, Group 7 consisted of manganese (Mn), technetium (Tc), and rhenium (Re). In the modern periodic table, Group 7 consists of the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

The halogens are a group of highly reactive nonmetals, while the elements in Group 7 of Mendeleev's periodic table were not all nonmetals and did not share the same chemical properties as the halogens.

Hope this helps!

B. CH3CH2CH2COCH3 yields sodium butanoate, CH3CH2CH2CO2Na, at the slowest rate.

Upon reacting with aqueous sodium hydroxide, the compound CH3CH2CH2COCH3 will yield sodium butanoate (CH3CH2CH2CO2Na), but at the slowest rate. This is because this compound contains an ether functional group, which has a much higher bond energy than the other compounds, making it harder to break down and therefore react more slowly.

Additionally, the carbon-oxygen double bond makes it difficult for the hydroxide ions to attack, further slowing down the reaction. This makes CH3CH2CH2COCH3 the compound that yields sodium butanoate at the slowest rate.

For more questions like Sodium hydroxide click the link below:

https://brainly.com/question/17162330

#SPJ4

The carrying capacity of the area was reduced in the year 10 according to the graph that shows the number of foxes on the island over a span of 15 years.

The graph shows a population of foxes over a span of 15 years. The y-axis represents the number of foxes on the island, while the x-axis represents time. The study began with the earlier 0 and ran until the start of year 15. According to the graph, the carrying capacity of the area was reduced in the year 10.

In the graph, it is shown that the population of foxes on Sunday Gill island had a significant increase from year 0 to year 3. After year 3, the fox population started to decrease and then remained fairly constant until year 10. After year 10, the population of foxes on the island started to decline more rapidly until the end of the study in year 15

This decline in the population of foxes on the island is most likely due to the reduction in carrying capacity of the area. Carrying capacity refers to the maximum number of individuals that an environment can sustain. When the carrying capacity of an environment is reached, it means that the environment can no longer provide the necessary resources to sustain the population.  

There are various factors that can cause a reduction in carrying capacity, such as environmental degradation, competition for resources, or a natural disaster. In this case, it is not clear what caused the reduction in carrying capacity in year 10, but it is likely that it was due to some environmental factor that impacted the availability of resources for the fox population.
For more such information on: graph

https://brainly.com/question/31305548

#SPJ8

Answer:

the answer is 64 moths are dark

1 chromium atom

Explanation:

number of (Cr) atom =

\( \frac{mass \: of \: cr}{molar \: mass \: (amu)} \)

n = m/M

n = 52/52

n= 1g

Answer:

2 g/mL

Explanation:

The formula for density is  \(\frac{mass}{volume}\)

The mass of the weights is 10 g.

The increase in volume is 5 mL.

\(\frac{10}{5}\) = 2 g/mL

Copper is the limiting reactant, with n(Copper) = 0.969 mol being less than n(Nitric acid). It produces 17.44 grammes of water. As the outcome is negative, there is no excess Nitric acid. The reaction uses up all of the Nitric acid.

The method described in the following steps can balance a redox equation: (1) Split the equation into two equal halves. (2) Make each half-mass reaction's and charge equal. (3) Ensure that the quantity of electrons going to each half-reaction is the same. The half-reactions should be combined.

n(Nitric acid) = (246 mL) x (6.60 mol/L) = 1.6236 mol

Since n(Copper) = 0.969 mol is less than n(Nitric acid), Copper is the limiting reactant.

m(Water) = n(Water) x M(Water) = 0.969 mol x 18.015 g/mol = 17.44 g

Therefore, 17.44 grams of Water is formed.

n(Nitric acid) needed = n(Copper) x 2 = 1.938 mol

The excess amount of Nitric acid is:

n(Nitric acid) excess = n(Nitric acid) initial - n(Nitric acid) needed

= 1.6236 mol - 1.938 mol

= -0.3144 mol

To know more about limiting reactant visit:-

https://brainly.com/question/14225536

#SPJ1

Mass can be calculated by using moles which can be further calculated from multiplication of Molarity to volume. Therefore, the molarity of the HCl solution is 3M. the correct option is option C.

Molarity can be calculated by dividing  number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/litre. It measure the concentration of any solute in a solution.

Other concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution

Mathematically,

2HCl + Ca(OH)\(_2\) \(\rightarrow\) CaCl\(_2\) + 2H\(_2\)O

Molarity of HCL× Volume of HCL=Molarity of Ca(OH)\(_2\) ×Volume of  Ca(OH)\(_2\)

Molarity of HCL× 1.00 L=1.50 M× 2.00 L

Molarity =3M

Therefore, the molarity of the HCl solution is 3M. the correct option is option C.

Learn more about the molarity, here:

https://brainly.com/question/16727614

#SPJ2

Answer:

Option B. 3.0 M

Explanation:

From the question given above, the following data were obtained:

Volume of solution = 3.0 L

Mole of MgCl₂ = 9 moles

Molarity =?

Molarity can simply be defined as the mole of solute per unit litre of the solution. Mathematically, it can be expressed as:

Molarity = mole of solute /Volume of solution

With the above formula, we can obtain the molarity of the solution as follow:

Volume of solution = 3.0 L

Mole of MgCl₂ = 9 moles

Molarity =?

Molarity = mole of solute /Volume of solution

Molarity = 9 / 3

Molarity = 3 mol/L = 3.0 M

Thus, the molarity of the solution is 3 M

80 mL of 0.25 M Pb(NO₃)₂ solution are needed to react with 0.40 L of 0.10 M NaCl solution according to the given reaction.

Double displacement reactions, also known as double replacement reactions or metathesis reactions, are chemical reactions in which two ionic compounds react with each other and exchange ions to form two new compounds.

First, we need to determine the limiting reagent in the reaction between NaCl and Pb(NO₃)₂ . The balanced equation shows that the mole ratio of NaCl to Pb(NO₃)₂ is 2:1, so we can calculate the number of moles of each reactant:

moles NaCl = 0.10 M x 0.40 L = 0.04 moles

moles Pb(NO₃)₂  = 0.25 M x V

where V is the volume of Pb(NO₃)₂  solution needed in litres.

To react completely with the NaCl, we need 2 moles of Pb(NO₃)₂  for every 1 mole of NaCl. So, we can set up an equation to solve for V:

0.04 moles NaCl / 2 x (1 molePb(NO₃)₂  / 1 mole NaCl) = 0.25 M x V

Simplifying, we get:

V = (0.04 / 2) / 0.25 = 0.08 L = 80 mL

Therefore, 80 mL of 0.25 M Pb(NO₃)₂ solution are needed to react with 0.40 L of 0.10 M NaCl solution

To find out more about double displacement reactions, visit:

https://brainly.com/question/29307794

#SPJ1

the possible quantum numbers (ordered n, ℓ, mℓ ) are:Option B.5, 3, -3 and Option C. 4, 3, -2

The quantum numbers n, ℓ, mℓ represent respectively the principal quantum number, the orbital angular momentum quantum number and the magnetic quantum number.

These are the three most important quantum numbers. T

here is another quantum number called the spin quantum number, denoted by ms.

Let's see which of the given quantum number sets is possible.2, 1, 3 is not possible because for ℓ = 1, mℓ can only be -1, 0, or 1. 5, 3, -3 is possible.4, 3, -2 is possible. -4, 3, 1 is not possible.

For any value of ℓ, mℓ must be between -ℓ and +ℓ. e. 2, 1, -2 is not possible because for ℓ = 1, mℓ can only be -1, 0, or 1. f. 3, 2, 2 is not possible because for ℓ = 2, mℓ can only be -2, -1, 0, +1, or +2. g. 3, 3, 1 is not possible because for any value of ℓ, mℓ must be between -ℓ and +ℓ.

Therefore, the possible quantum numbers (ordered n, ℓ, mℓ ) are:5, 3, -34, 3, -2

For more questions on quantum numbers

https://brainly.com/question/30881398

#SPJ8

Answer:

Mass = 40.5 g

Explanation:

Given data:

Mass of liquid octane = 62.0 g

Mass of oxygen = 100 g

Mass of water produced = ?

Solution:

Chemical equation:

2C₈H₁₈ + 25O₂      →       16CO₂ + 18H₂O

Number of moles of octane:

Number of moles = mass/molar mass

Number of moles = 62.0 g/114.23 g/mol

Number of  moles = 0.54 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles =  100 g/ 32 g/mol

Number of moles = 3.12 mol

Now we will compare the moles of octane and oxygen with water.

              C₈H₁₈            :            H₂O

                   2              :              18

              0.54              :          18/2×0.54 = 4.86 mol

                 O₂              :            H₂O

                  25             :              18

                3.12              :           18/25×3.12 = 2.25 mol

Number of moles of water produced by oxygen are less so it will act as limiting reactant.

Mass of water:

Mass = number of moles × molar mass

Mass = 2.25 mol × 18 g/mol

Mass = 40.5 g

Answer:four hydrogen atoms

Explanation:

The oxidation state of nitrogen (N) in NaNO3 is +5. option B

To determine the oxidation state of nitrogen (N) in sodium nitrate (NaNO3), we need to assign oxidation numbers to each element in the compound.

In NaNO3, we know that the sodium ion (Na+) has a +1 oxidation state because it is an alkali metal. Oxygen (O) typically has an oxidation state of -2 in compounds, and there are three oxygen atoms in NaNO3. Since the compound is neutral, the sum of the oxidation states must be zero.

Let's assume that the oxidation state of nitrogen is x. Therefore, we can set up the equation:

(+1) + x + (-2) * 3 = 0

Simplifying the equation:

+1 + x - 6 = 0

x - 5 = 0

x = +5

Therefore, the oxidation state of nitrogen (N) in NaNO3 is +5.

The oxidation state of an element indicates the number of electrons it has gained or lost in a compound. In this case, the nitrogen atom in NaNO3 has gained five electrons to achieve a stable oxidation state of +5.

It is important to note that oxidation states are formal charges and do not necessarily represent the actual distribution of electrons in a compound. They are assigned based on a set of rules and can be useful in understanding the reactivity and behavior of elements in chemical reactions.

Option B

For more such questions on oxidation state visit:

https://brainly.com/question/25551544

#SPJ8

Metal extraction is a reduction process because the extracted metal is in a bound state and has a positive valence. The addition of electrons converts cations into atoms or metals.

Metal extraction is always a reductive process. Metals have positive valences in the bound state, and cations are converted to atoms or metals by the addition of electrons. So by definition it is a reductive process.

Example - Mⁿ⁺ + ne⁻ → M

Mining is the process of extracting metal ores buried deep underground. Metal ores occur in varying amounts in the Earth's crust. By extracting metals from ores, minerals in the ground can be used. Ore is very different from the finished metal you see in buildings and bridges. Ore consists of the desired metallic compounds and impurities and a geological material called gangue. The recovery of metals and their separation takes place in several main steps.

Learn more about Metal extraction here : https://brainly.com/question/333741

#SPJ9

Answer:

Explanation:

Initial:

A volcano is caused by a rupture in the crust from which molten magma

escapes

The correct options are;

Reasons:

1. Due to the equal densities and buoyancy of the plates, there is no

subduction and the plates rise to form mountain ranges and no volcanoes.

2. The subduction causes the plates to form magma and then volcanoes.

3. Shallow earthquakes that have their epicenter at the fault line in the

ocean generate a tsunami.

4. The mantle lay under each plate and therefore, the high temperatures

of the mantle does not support the fact.

5. Volcanic arcs are formed in the convergence of two oceanic or oceanic

and continental plates.

6. When two continental plates converge, shallow earthquakes occur.

7. A crack called a trench is formed by the interaction of an oceanic crust

and another crust.

8. A subduction occurs when oceanic plates converge.

9. A fault is produced by horizontal plate movement.

10. A Flip or kick upwards of water is known as a tsunami.

11. Subduction occurs during convergence of two plates such that a

subducted plate goes down beneath an overriding plate.

12. The illustration of seafloor spreading consists of two plates moving

away from each other.

Question 12: Based on Department of Education Science Module.

13. Earthquake occur at places where the plates are moving (including

subducting).

14. Volcanic island arcs are formed by two oceanic plates.

15. At the location where the continents meet the seas, oceanic plates are

subducted under the continental plate, melted to magma in the mantle

from which volcano is formed.

Learn more about volcanoes here:

https://brainly.com/question/19424796

\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)

The given statement is false ~

As we know, large distances can only be measured by using larger units like kilometers, miles, or other units, and it's much convenient. so, it's so different if we were to measure that distance using small unit like " decimeters "

I hope that was reasonable for you to understand, let me know if you have any questions ~

In strong or weak acid solutions, autoionization of water produces less H3O+ amounts than in pure water as  according to le Ch atelier principle, addition of H3O+ causes the H2O equilibrium to shift left.

The awareness of hydronium could be very tons better than a susceptible acid due to the fact robust undergoes entire dissociation and a susceptible acid undergoes best partial dissociation generating lesser quantity of Hydronium ions. Adding an acid to water consequently has an impact at the awareness of each the H3O+ and OH- ions. Because it's miles a supply of this ion, including an acid to water will increase the awareness of the H3O+ ion. Adding an acid to water, however, decreases the quantity to which water dissociates.

To learn more about partial dissociation check the link below-

https://brainly.com/question/13923449

#SPJ4

Answer:

6.3

Explanation:

multiply the length value by 100

Answer:

hedges are used to be courteous in expressing (counterclaims)