Be sure to answer all parts. assume the diameter of a neutral helium atom is 1.40 × 102 pm. suppose that we could line up helium atoms side by side in contact with one another. how many atoms would it take to make the distance 2.60 cm from end to end? × 10 he atoms (enter your answer in scientific notation.)

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).

Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water