How is the massive star born

1 answer:

7 0

Stars form from cold molecular gas and dust when gravitational force overcomes the internal pressure in molecular clouds.

You might be interested in

A white coloured solid salt “A” on heating gives out two colourless gases “B” and “C”.

QveST [7]

I think it say go rggdggy and do something with one of those other things and get a work order and get the t off and u I know I have

6 0

3 years ago

How do an alligator’s eyes help it survive?

scoray [572]

An alligator has has an extra eyelid that protects there eyes underwater. It's basically their own built-in goggles.

8 0

3 years ago

Select the correct answer.

Stels [109]

I would definitely say that the answer is

C. drought

because if they are getting 43.76 inches of rain on average, and then one year they decrease 10.31 inches of rain to 33.45 inches of rain, its a drought for sure.

7 0

3 years ago

Read 2 more answers

Problem 3.100 a chemical plant uses electrical energy to decompose aqueous solutions of nacl to give cl2,h2, and naoh: 2nacl(aq)

chubhunter [2.5K]

First we calculate the number of moles of Cl2, that is:

moles Cl2 = 1.5*10^10 grams/71 grams/mol = 211267605.633802817 mol = 2.1 * 10 ^ 8 mole = x <span>

So that based on stoichiometry, the number of moles of NaOH = 2x and that of H2 = x mol

mass of NaOH = 4.2*10^8 * 40 =168*10^8 grams = 1.68 * 10^6 kg = 1.68 metric tons

<span>mass of H2 = 2.1*10^8 * 2 = 4.2*10^8 grams = 0.042 * 10^6 kg = 0.042 metric tons.</span></span>

4 0

3 years ago

A student was asked to determine the concentration of ammonia, a volatile substance used in the clinical setting as a respiretor

UNO [17]

This question is describing two chemical equations whereby the concentration of ammonia has to be determined. The first reaction is between 25.00 mL of ammonia and 50.00 mL of 0.100-M HCl whose excess was neutralized with 21.50 mL of 0.050-M Na₂CO₃ and thus, the concentration ammonia in the cloudy solution was determined as 0.114 M.

First of all we need to go over the titration of the excess HCl with Na₂CO₃ by writing the chemical equation it takes place when they react:

$2HCl+Na_2CO_3\rightarrow 2NaCl+CO_2+H_2O$