answer false or true for each question, (1-5). thanks!

Answer:

Seasons are caused by the Earth’s revolution around the Sun, as well as the tilt of the Earth on its axis. The hemisphere receiving the most direct sunlight experiences spring and summer, while the other experiences autumn and winter. During the warmer months, the Sun is higher in the sky, stays above the horizon for longer, and its rays are more direct.

Answer:

True!

Explanation:

A spectrum is simply a chart or a graph that shows the intensity of light being emitted over a range of energies. Have you ever seen a spectrum before? Probably. Nature makes beautiful ones we call rainbows. Sunlight sent through raindrops is spread out to display its various colors (the different colors are just the way our eyes perceive radiation with slightly different energies).

Hope i helped!

Answer:

Help with what?

Explanation:

Answer:

help with whattt

Explanation:

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Answer: An existing theory is modified so that it can explain both the old and new observations.

Explanation:

Answer:

The correct anwser would be B

Explanation:

Answer:

Answer is meter. ~~~~~~

Answer:

the molecular formula of a compound is P₄O₁₀.

M(P₂O₅) = 2 · Ar(P) + 5 · Ar(O) · g/mol.

M(P₂O₅) = 2 · 31 + 5 · 16 · g/mol.

M(P₂O₅) = 142 g/mol; molar mass of empirical formula.

M(PₓOₙ) = 284 g/mol; molecular mass of unknown compound.

M(PₓOₙ) : M(P₂O₅) = 284 g/mol : 142 g/mol.

M(PₓOₙ) : M(P₂O₅) = 2 : 1.

Explanation:

The  empirical formula is [tex]P_{2}O_{5}[/tex]  and The molecular formula is [tex]P_{4}O_{10}[/tex]

[tex](\frac{47.3g}{1})( \frac{1 mol}{30.97g})= 1.41 moles[/tex] of Phosphorus.

[tex](\frac{56.3}{1})(\frac{1 mol}{16}) = 3.51 moles[/tex] of Oxygen

3.51/1.41 = 2.49 (rounded off 2.5)

1.41/1.41 = 1

2.5 *2 = 5 (Oxygen)

2 *1 = 2 (Phosphorus)

Hence  [tex]P_{2}O_{5}[/tex]  is Empirical formula

and [tex]P_{4}O_{10}[/tex] is Molecular Formula

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#SPJ2

Answer:

0.96

Explanation:

Number of moles of Fe(III) = 3/1000 *  0.002 M = 6 * 10^-6 moles

Number of moles of SSA = 7/1000 * 0.02 = 1.4 * 10^-4 moles

Total number of moles =  6 * 10^-6 moles +  1.4 * 10^-4 moles

Mole fraction of SSA = number of moles of SSA/ total number of moles.

Mole fraction of SSA =  1.4 * 10^-4 moles/  6 * 10^-6 moles +  1.4 * 10^-4 moles

Mole fraction of SSA = 0.96

Answer:

[tex][C]=0.0221M[/tex]

Explanation:

Hello there!

In this case, according to the given chemical reaction at equilibrium:

[tex]3A\rightleftharpoons 3B+2C[/tex]

It is possible for us to set up the equilibrium expression as shown below:

[tex]Kc=\frac{[B]^3[C]^2}{[A]^3}[/tex]

Whereas Kc, [A] and [B] are known as 0.0091, 0.031M and 0.0823M and it is required to calculate [C]; thus, we solve for it as follows:

[tex][C]^2=\frac{[A]^3Kc}{B]^3}[/tex]

[tex][C]=\sqrt{\frac{(0.031)^3*0.0091}{(0.0823)^3}}[/tex]

[tex][C]=0.0221M[/tex]

Best regards!

Answer:

Hello

Explanation:

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Answer:

Its axis is tilted by 26.73 degrees with respect to its orbit around the Sun, which is similar to Earth's 23.5-degree tilt. This means that, like Earth, Saturn experiences seasons. Like Jupiter, Saturn is made mostly of hydrogen and helium.

Explanation:

Thats all I could think of, please mark brainliest

Answer:

well the world would be shocked

Explanation:

and suprise

Answer:

rn4y8rg7348y0rp934nrf3

efjewhrf8h934hfr84398wgfyu8o

Explanation:

fe8u34h4n3urhu93q4pirnpqr34uwbry8439br8u3i2rpi34ofreuebue rf ef erf3rw  wg

Answer:

12,312 J or 0.12312 kJ

Explanation:

q = mCT

q = J of heat  

m = mass

C = heat capacity

T = temp change

q = 38 x 0.90 x 3.6

q = 12312 J

q = 0.12312 kJ

Answer:

electromagnetic waves

Explanation:

The waves that do not need a medium to travel through are known as electromagnetic waves.

These waves do not need any medium for their propagation or traveling. The waves have different wavelength and energy factors depending upon their rate of propagation. EMR waves travel from the sun to the earth in space.

Examples of electromagnetic waves are Xrays, gamma rays, radio waves, and more.

Find more information about electromagnetic waves here:

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Answer:

20 Liters

Explanation:

Boyles Law => ΔP ∝ 1/ΔT => P₁V₁ = P₂V₂ => V₂ = P₁V₁/P₂

P₁ = 2 atm

V₁ = 10 Liters

P₂ = 1 atm

V₂ = ?

V₂ = 2atm x 10L / 1atm = 20 Liters

Answer:

Explanation:

To find the pressure in kPa we use the conversion

If 1 atm = 101.3 kPa

400 atm = 400 × 101.3 = 40520 kPa

Expressing it in standard form we have the final answer as

Hope this helps you

Answer: 3.04 x 10 mm Hg

Explanation:

The bond between the Cu²⁺ and OH⁻ ions is, well, ionic. However, the bond between the O and the H in the OH⁻ ion is covalent. So Cu(OH)₂ is, as a whole, an ionic compound, but it contains or comprises both ionic and covalent bonds.

Answer:

C

Explanation:

First there is no chemicals involved so cross out B and D. Wind turbines are made to create energy not to convert it so A is crossed out as well. The remaining answer is C.

The energy is transformed from mechanical to electrical when the blades are spinning, as shown.

Wind turbines are large fans that convert the kinetic energy of wind into electrical energy.

The blades run by winds and generate electricity.

They are helpful, but they are a threat to birds and bats.

Thus, the correct option is C, mechanical to electrical energy.

Learn more about wind turbines

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there is how I would answer it.

The mass of water present in the solution is 21.5 g.

Concentration refers to the amount of solute in a solution. There are various ways of expressing concentration such as;

We have the following information;

Percent concentration = 35.0 %

mass of solute = 40.0 g

Mass of water = ?

So;

35 = x/40 + x × 100/1

35 = 100x/40 + x

35(40 + x) = 100x

1400 + 35x = 100x

1400 = 100x - 35x

1400 = 65x

x = 1400/65

x = 21.5 g

Hence the mass of water is 21.5 g.

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Answer:

This is true.

Explanation:

Answer:

fluid D

Explanation:

Fluid D has the highest viscosity because it is more difficult for it to move which makes it hit the table at 15 seconds

while fluid C has the lowest Viscocity which makes it move easily and it hit the table fastest

Answer:

It Should  be Strong Acid

Explanation:

Strong acids and bases ionize fully in an aqueous solution. Weak acids and bases also ionize, but only partially and the reaction is reversible. So how do we know if an acid or base is strong or weak? A simple way to determine strength is to add the acid or base to water— high reactivity means a stronger acid or base. This reactivity is measured with a value called the Ka or Kb value. It tells us how reactive an acid or a base is based on how many hydronium or hydroxide ions are formed during the reaction. Hope it helps :)

Answer:

A single bond, but it's also a hydrogen bond.

Explanation:

A hydrogen bond forms when hydrogen bonds to the 3 most electronegative atoms: Oxygen, Nitrogen, or Fluorine.

It's a single bond because hydrogen only has two valence electrons. Therefore, the rest of the electrons are placed around the nitrogen atom.

Answer:

caca123

Explanation:

UM