1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Scorpion4ik [409]
3 years ago
7

According to the periodic table, the average atomic mass of helium is A) 2 amu. B) 2.0026 amu. C) 4.0026 amu. D) 6.0026 amu.

Physics
1 answer:
RUDIKE [14]3 years ago
3 0

Answer:

C) 4.0026 amu

Explanation:

Helium (He) is the 2nd element on the Periodic Table.

It's neutral atom has 2 protons and 2 electrons.

It is in the 1st period and the 18th row.

It is also a Noble gas.

You might be interested in
A net force of 3 N accelerates a mass of 3 kg at the rate of 1 m/s2. The acceleration of a mass of
Cloud [144]

Answer:

,mkjh ,bkl m,

Explanation:

3 0
4 years ago
When water diffuses across a semi permeable membrane the process is called __________.
expeople1 [14]
Osmosis !!!!!!!!!!!!!!!!!!
6 0
3 years ago
What is the purpose of chloroplasts, and why do you think it is missing from the root hair cell?
Karolina [17]

Explanation:

Mitochondria are essential parts of many eukaryotes, but they are useless without oxygen. Therefore, chloroplasts are extremely important. They produce breathable air for life. Root hairs are seen to not have chloroplasts as their job is to collect water and nutrients.

<h2><em><u>BRAINILIEST</u></em><em><u> </u></em><em><u>PLEASE</u></em><em><u> </u></em></h2>
8 0
3 years ago
Drag the item from the item bank to its corresponding match.1.A fireman turns on his hose and is knocked backwards.2.It takes le
creativ13 [48]

Answer:

1 - third law

2 - second law

3 - first law

4 - third law

5 - second law

6 - first law

Explanation:

First law

In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.

Second law

In an inertial frame of reference, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration, a of the object

F = ma.

Third law

When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.

7 0
3 years ago
A 20-coil spring has a spring constant of 100 N/m.  Suppose you cut this spring in half. That is, there are two 10-coil springs.
Tom [10]
Just need the points lol idk
5 0
3 years ago
Other questions:
  • What is the state of matter that consists of a gas-like mixture of free electrons and nucle of atoms that have been stripped of
    15·1 answer
  • What is the process in which a substance changes from a solid into a liquid?
    8·1 answer
  • An underwater air bubble has an excess inside pressure of 13 pa. what is the excess pressure inside an air bubble with twice the
    11·1 answer
  • A man in a gym is holding an 8.0-kg weight at arm's length, a distance of 0.55 m from his shoulder joint. What is the torque abo
    9·1 answer
  • What is the amount of displacement of a runner who runs exactly 2 laps around a 400 meter track?
    6·1 answer
  • What is the gravitational force between Mars and the sun? 7.43 × 1030 N 1.79 × 1026 N 1.65 × 1021 N 3.76 × 1032 N
    5·1 answer
  • The instantaneous emf resulting from magnetic induction equals the rate of change of flux is
    6·1 answer
  • 4 Points
    9·2 answers
  • During the process of mountain building, earthquakes sometimes occur along continental-continental convergent boundaries. Which
    12·2 answers
  • attention random asian ladies have been randomly liking peoples posts on tiktok, its not a joke Warning: dont click on their lin
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!