Please Help!!!!!How is the position of the full moon in relation to Earth and the sun different from the position of the full Venus in relation to Earth and the sun? Does the apparent size of the moon change with its phases? Please explain!!!!

Answers

Answer 1

Answer: i have got no idea how to answer this question sorry

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Emily and her science lab partner made a complete circuit by attaching a light bulb to some wires and a battery. Which of the following best describes the flow of the energy in the complete circuit?A. light bulb, wire,battery,lightbulb,wire

B. battery,wire,lightbulb, battery,lightbulb

C. battery, lightbulb, battery, lightbulb

D. wire,battery,wire,battery

Answers

The answer is B, since it went from battery, to wire to light bulb back to battery and light bulb

your best answer i think would most likely be D

How do i describe how a constant volume calorimeter can be used to measure the heat transferred from a burning piece of coal to cool water.

Answers

calorimeter is a device used to measure the amount of heat involved in a chemical or physical process. For example, when an exothermic reaction occurs in solution in a calorimeter, the heat produced by the reaction is absorbed by the solution, which increases its temperature. When an endothermic reaction occurs, the heat required is absorbed from the thermal energy of the solution, which decreases its temperature ([link]). The temperature change, along with the specific heat and mass of the solution, can then be used to calculate the amount of heat involved in either case.

PLEASE I NEED HELP ASAP!! Drag each number to the correct location on the equation. Each number can be used more than once, but not all numbers will be used.
Balance the equation with the correct coefficients.
2
3
4
5

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Explanation:

When a chemical equation has equal number of atoms on both reactant and product side then it is known as a balanced equation.

For example, $KClO_(3) \rightarrow KCl + O_(2)$

Number of atoms on reactant side are as follows.

K = 1

Cl = 1

O = 3

Number of atoms on product side are as follows.

K = 1

Cl = 1

O = 2

Hence, to balance this equation we multiply $KClO_(3)$ by 2 on the reactant side and multiply KCl by 2 and $O_(2)$ by 3 on the product side.

Therefore, the balanced chemical equation is as follows.

$2KClO_(3) \rightarrow 2KCl + 3O_(2)$

Answer:

2KCl $O_(3)$ ⇒ 2KCl + $3O_(2)$

Explanation:

9. In a period, do the number of shielding electrons change? Why do you thinkor shielding electrons change? Why do you think atomic radius decreases across a
period?

Answers

Answer:

The nuclear charge increases, but the number of inner shielding electrons stays the same.

Explanation:

Their shielding does not change, so the effective nuclear charge — the charge felt by a valence electron — increases.

The valence electrons are pulled closer to the nucleus, decreasing the atomic radius.

For example, consider the elements of Period 3.

$\begin{array}{ccccc}& & \textbf{Number of} & \textbf{Inner} & \textbf{Valence}\n\textbf{At. No.} & \textbf{Symbol} & \textbf{Protons} & \textbf{Electrons} & \textbf{Electrons}\n11& \text{Na} & 11 & 10 & 1\n12& \text{Mg} &12 & 10 & 2\n13& \text{Al} & 13 & 10 & 3 \n14& \text{Si} & 14 & 10 & 4 \n15& \text{P} & 15 & 10 & 5\n16& \text{S} & 16 & 10 & 6\n17& \text{Cl} & 17 & 10 & 7\n18& \text{Ar} & 18 & 10 & 8 \n\end{array}$

The number of protons increases as you go from one element to the next, but the number of inner electrons is constant.

What are the subatomic particles of barium

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Electrons (negative charge, and orbits the nucleus), Protons (positive charge, and is in the nucleus) and Neutrons (no charge, and is in the nucleus)

Name an object that the magnet would repel

Answers

the negative side of another magnet

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