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2 years ago

14

The distance from the sun to the earth is 1.50 x 10^8 km. The speed of light is 3.00 x10 ^8m/s. How many round trips between Ear

th and the sun could a beam of light make in one day?

1 answer:

icang [17]2 years ago

6 0

Answer:

240*60/8=180

Explanation:

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What are the chemical processes used to make chloroquine?

4vir4ik [10]

You spell Chlorine wrong but the process is called electrolysis

6 0

4 years ago

Which compound is produced when HCl(aq) is neutralized by Ca(OH)2(aq)?

kiruha [24]

<u>Answer:</u> The correct answer is Option 1.

<u>Explanation:</u>

Neutralization reaction is defined as the reaction in which acid reacts with a base to produce a salt along with water.

Here, HCl is an acid and $Ca(OH)_2$ is a base. When these two compounds react, the salt obtained is calcium chloride.

The equation for the above reaction is given by:

$2HCl(aq.)+Ca(OH)_2(aq.)\rightarrow CaCl_2(s)+2H_2O(l)$

Hence, the correct answer is Option 1.

8 0

3 years ago

Read 2 more answers

If 3.89 × 1024 atoms of a noble gas is collected and it has a mass of of 848 grams, this element is most likely a. He b. Ne c. A

bearhunter [10]

Answer:

Xenon

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by $N_0$ .

Avogadro constant:-

$N_a=6.023\times 10^{23}$

Let the molar mass of the element is x g/mol

So,

$6.023\times 10^{23}$ atoms have a mass of x g

Also,

$3.89\times 10^{24}$ atoms have a mass of $\frac{x}{6.023\times 10^{23}}\times 3.89\times 10^{24}$ g

This mass is equal to 848 g

So,

$\frac{x}{6.023\times 10^{23}}\times 3.89\times 10^{24}=848$

x= 131.3 g/mol

This mass correspond to xenon.

3 0

4 years ago

Determine which physical conditions are necessary to support nuclear fusion and formation of stars.

Ilia_Sergeevich [38]

Answer:

Promotes Stellar Formation:

-Increased Gravitational Attraction

-Higher Temperature

Does Not Promote Stellar Formation:

-Decreased Gravitational Attraction

-Lower Temperature

Explanation:

Stars need at least three million kelvins to form, and the gravitational attraction helps form the star in the first place.

5 0

3 years ago

Calculate the value of AE for a system that loses 50 J of heat and has 150 J of work Performed on it by the surroundings.

gavmur [86]

Answer:

100 j

Explanation:

bascially u j subtract 50 from 150 because the system lost 50 j but theres 150 in its surroundings

4 0

3 years ago