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3 years ago

How many of the planets have an orbital period of less than one Earth year?

1 answer:

8 0

Since orbital period depends on how far you are from the sun, planets closer to the sun have a orbital period less than one earth year.

These planets are Mercury and Venus

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The number of valence electrons of the element with the electron configuration 1s22s22p63s23p1 is :

lbvjy [14]

3
Let me know if you need/want an explanation

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3 years ago

A base is a substance that can __________ a hydroxide ion.

ivanzaharov [21]

Answer:

A base is a substance that can donate a hydroxide ion.

Please Mark Brainliest If This Helped!

7 0

3 years ago

What is matter?

Oduvanchick [21]

Answer:

C. anything that has mass and takes up space

4 0

3 years ago

What is the empirical formula of a compound that contains 49.4% K, 20.3% S, and 30.3% by mass? A) KSO3 B) K2SO3 C) KSO2 D) KSO E

yulyashka [42]

Answer: $K_2SO_3$ .

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of K = 49.4 g

Mass of S = 20.3 g

Mass of O = 30.3 g

Step 1 : convert given masses into moles.

Moles of K= $\frac{\text{ given mass of K}}{\text{ molar mass of K}}= \frac{49.4g}{40g/mole}=1.23moles$

Moles of S= \frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{20.3g}{32g/mole}=0.63moles[/tex]

Moles of O = \frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{30.3g}{16g/mole}=1.89moles[/tex]

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For K = $\frac{1.23}{0.63}=2$

For S = $\frac{0.63}{0.63}=1$

For O = $\frac{1.89}{0.63}=3$

The ratio of K: S:O = 2: 1: 3

Hence the empirical formula is $K_2SO_3$ .

7 0

4 years ago

In your own words, describe the concept of specific heat capacity and the effects that it has on temperature changes. Give an ex

umka2103 [35]

Answer:

The specific heat capacity is the heat that a body or a system needs to administer so that it can increase its internal temperature.

Explanation:

The calorific capacity is measured in several units, it varies a lot between products, reactants or the same systems since each one is independent in its composition and this conditions it.

As for its mathematical calculation, it is the quotient, that is, the division between the dose of energy transferred to a body and the change in temperature that it experiences.

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3 years ago