MaxMalytskyy2013 MaxMalytskyy2013

31-01-2015
Chemistry

Answered

What was helium used for in the past?

Answer :

sciencetimes1 sciencetimes1

31-01-2015

Helium used to be used in hot air balloons. Then, when the Hindenburg exploded, annexed file, they realized that hydrogen was not only lighter, but it also was less flammable.

View image sciencetimes1

Answer Link

Mathman101 Mathman101

31-01-2015

Hot air balloons. They have a little hot plate/fire or whatever and they used, and that made the helium rise, thus rising the balloon.

Answer Link

Other Questions

3 The term integration refers to the ability to A employ different fonts in an email B select different graphics on the computer C use a variety of search engin

jose said all of the multiples of 8 are also multiples of 2 jamila said that all of the multiples of 8 are also multiples of 4 who is correct explain

what color is the asthenosphere

the rockfords have a square play area that is built around a center sandbox that is in the shape of a circle the sides of the play area are tangent to the circl

jason deposits 5000 in the bank that will pay him 4 simple interest annually if jason deposits no more than the initial 5000 how much money will be in the accou

Birth rate 35 Death rate 7 Immigration 4 Emigration 17 What is this population growth population increases by 41 population decreases by 15 population increases

find the volume of a cylinder whose height is 10ft and diameter of base is 6ft

how many significant figures are in the value 20200

What is the value of x in the equation X231656

an angle measure x degrees what is the measure of its compliment what is the measure of its supplement