What is a molecule?

A. A group of positive ions surrounded by delocalized electrons

B. A group of ionically bonded atoms

C. Two oppositely charged ions

D. A group of covalently bonded atoms

Show that a directed multigraph having no isolated vertices has an euler circuit if and only if the graph is weakly connected and the in-degree and out-degree of each vertex are equal

Infer why gases such as the oxygen used at hospitals are compressed. why must compressed gases be shielded from high temperatures? what must happen to compressed oxygen before it can be inhaled?

A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.94 10-2 kg/s. The density of the gasoline is 735 kg/m3, and the radius of the fuel line is 3.10 10-3 m.

What is the temperature change in 355 ml of water upon absorption of 34 kj of heat? (the specific heat capacity of water is 4.184 j/g∘c.) express your answer in degrees celsius?

A 0.10-kilogram ball dropped vertically from a height of 1.0 meter above the floor bounces back to a height of 0.80 meter. The mechanical energy lost by the ball as it bounces is approximately A) 0.20 J B) 0.080 J C) 0.78 J D) 0.30 J

A 590-kg rocket is at rest on the launch pad. what upward thrust force is needed to accelerate the rocket uniformly to an upward speed of 28 m/s in 3.3 s?

Is work being done when a hiker puts on a bag

run at the same speed and in the same direction, and they both run for the same amount of time, what can you say about the distance they travel?

How can you show positive body languages with your mouth

After making minor changes to a team report, Jeff felit like he had done enough work on the project. When he was asked to contribute more, he got offlended and quit responding to requests from some leam members.