Which of these most likely causes a total solar eclipse?Select one:
a. the sun, moon at perigee, and Earth forming a triangle
b. the sun, moon at apogee, and Earth forming a triangle
c. the new moon at apogee coming between Earth and the sun along a straight line
d. the new moon at perigee coming between Earth and the sun along a straight line

Answers

Answer 1

Answer:

Answer:

d. the new moon at perigee coming between Earth and the sun along a straight line

Explanation:

Solar eclipse occurs when moon comes in between sun and Earth and the three align in a straight line. The moon blocks the sunlight falling on the earth. The earth passes through the shadow of the moon.This phase of moon is New moon.

A total eclipse is said to occur when the disc of moon complete covers the disc of sun. This happens when moon is at closest position to earth in it orbit that is at perigee.

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What is released when the chemical bond is broken between the second and third phosphates of an atp?
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Consider the following 1.0 mol L–1solutions. Which one of the following lists the solutions in decreasing order (that is, strongest to weakest) of electrolyte strength? (a) sodium phosphate > sulfuric acid > phosphoric acid > sucrose (sugar) (b) sucrose (sugar) > sulfuric acid > phosphoric acid > sodium phosphate (c) sulfuric acid > sodium phosphate > phosphoric acid > sucrose (sugar) (d) sodium phosphate > phosphoric acid > sulfuric acid > sucrose (sugar)

A student is running an experiment in which 60.3 grams of LiCl is needed, but the only jar of reagent in the lab is labelled lithium chloride monohydrate. How many grams of the hydrate must the student weigh out in order to get the desired amount of the anhydrous compound?

Answers

Answer:

Mass of the hydrated salt required is 85.8 g

Explanation:

Molar mass of anhydrous lithium chloride = 42.5 g/mol

Molar mass of lithium chloride monohydrate = 60.5 g/mol

Mass of water molecule in the hydrated salt = 18 g/mol

Ratio of lithium chloride to water molecule in the hydrated salt = 42.5 : 18

Mass of water molecule in the hydrated salt that will contain 60.3 g of lithium chloride = 60.3/42.5 × 18 g = 25.5 g

Therefore mass of hydrated salt required = (60.3 + 25.5) g = 85.8 g

The student will have to weigh out 85.8 g of the hydrated salt, and then heat the salt in an evaporating dish until it decomposes to liberates all the water of hydration in order to obtain the anhydrous salt.

Which statement explains how the bands in the crystal of a metal are like atomic orbitals?

Answers

Please provide the choices here.

The similarity of the bands in the crystal of a metal to the atomic orbitals can be explained by the band theory of metals. In an atom, when the electrons get excited, the electrons jumps to a higher orbital so as to reach equilibrium. This is analogous to the electrons in the metals which also jumps to another band once excited by an external energy (e.g. electrical energy).

Answer:

Explanation:

They both allow electrons to move from lower energy levels to higher energy levels.

In real life, a given system can approach equilibrium from different starting points but will still have the same equilibrium constant. How is this possible? Explain your answer in complete sentences.

Answers

In real life, a given system can approach equilibrium from different starting points but will still have the same equilibrium constant. It is because the rate of reaction for product formation and reactants forming is the same. It came to a point where their reaction attains equilibrium.

1. What is the empirical formula for a compound containing 63.8% N and 36.2% O?a. N₂O₅
b. N₂O₃
c. NO₂
d. NO
e. N2₂O

Answers

$M\ N_2=28g/mol\n 63,8\%--28g\n 100\%--x\n x=43,89g$

43,89g≈44g
44g == 2x 14g (N) + 1x 16x(O)
M N₂O = 44g

What is 850 torr= ? Atm

Answers

850 torr. times 1 atm./760 torr. or 850/760. So, 1.11842105 atm.

Which of the following statements is true of the critical temperature of a pure substance?A. The critical temperature is the temperature above which the liquid phase of a pure substance can exist.
B. The critical temperature is the temperature above which the liquid phase of a pure substance cannot exist.
C. The critical temperature is the temperature below which the liquid phase of a pure substance cannot exist.
D. The critical temperature is the temperature at which all three phases can coexist.
E. The critical temperature is the temperature at which the pure substance reaches, but cannot go beyond, the critical pressure.
Can someone explain this one?

Answers

B
After temperature reaches certain treshold the difference between density of liquid and gas state disappears, and it is impossible to liquify the substance.

Answer:what do u mean tho

Explanation:

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