3 years ago

Many people think that summer is warmer because the earth is closer to the sun at that time of year. explain why

Chemistry

1 answer:

Marysya12 [62]3 years ago

5 0

Summer days are warmer because the path of the sun is longer and we have more direct sunlight during that time

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Aleks04 [339]

Answer:

Explanation:

An atom is neutral, meaning that the number of protons is equal to the number of electrons.

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3 years ago

Consider the nuclear equation below. Superscript 235 subscript 92 upper U right arrow superscript 4 subscript 2 upper H e. What

coldgirl [10]

Answer:

$\rm_{90}^{231}\text{Th}$

Explanation:

The unbalanced nuclear equation is

$\rm _{92}^{235}\text{U} \longrightarrow \, _{2}^{4}\text{He} + X$

Let's write X as a nuclear symbol.

$\rm _{92}^{235}\text{U} \longrightarrow \, _{2}^{4}\text{He} + _{Z}^{A}\text{X}$

The main point to remember in balancing nuclear equations is that the sums of the superscripts and of the subscripts must be the same on each side of the reaction arrow.

Then

235 = 4 + A , so A = 235 - 4 = 231, and

92 = 2 + Z , so Z = 92 - 2 = 90

And your nuclear equation becomes

$\rm _{92}^{235}\text{U} \longrightarrow \, _{2}^{4}\text{He} +\, _{90}^{231}\text{X}$

Element 90 is thorium, so

$\rm X = _{90}^{231}\text{Th}$

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3 years ago

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The process in which liquid material is poured into a mold to form sculpture is called: carving casting modeling assemblage

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