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
Aleksandr-060686 [28]
2 years ago
12

What is the atomic mass of Helium

Chemistry
2 answers:
vovangra [49]2 years ago
7 0

Answer:

4.002602 u

Explanation

Kay [80]2 years ago
5 0

Answer:

4.002602 u

Explanation:

You might be interested in
Why does water flow decrease in your shower when someone flushes the toilet ​
Rashid [163]

Answer:

A toilet requires a large amount of cold water to flush. So, when the toilet flushes while you're in the shower, it's stealing from your shower's cold water supply. When the pressure-balancing valve senses the drop in cold water pressure, it responds by restricting the hot water pressure.

6 0
3 years ago
Read 2 more answers
Sugar has a lower melting point than salt because sugar is made of _________.
il63 [147K]
The correct answer is Crystals.

Unlike sugar, salt is not made out of crystals, but both salt and sugar are made out of atoms, that is molecules, and can have ions.
4 0
2 years ago
An ideal gas is a gas. <br> Perfect<br> Theoretical<br> Real
dusya [7]

Answer:

An ideal gas is a theoretical gas composed of many randomly moving point particles that are not subject to interparticle interactions. The ideal gas concept is useful because it obeys the ideal gas law, a simplified equation of state, and is amenable to analysis under statistical mechanics.

5 0
3 years ago
Read 2 more answers
A hiker has packed a bag of chips as a snack. At the start of the hike the pressure was 1.5 atm and the temperature was 35*C. At
Mazyrski [523]
According to <span>Gay-Lussac's Law the temperature and Pressure are directly proportional to each other if the amount and volume of given gas are kept constant.
Mathematically for initial and final states it is expressed as,

                                          P</span>₁ / T₁  =  P₂ / T₂     ----- (1)
Data Given;
                  P₁  =  1.5 atm

                  T₁  =  35 °C + 273  =  308 K

                  P₂  =  ?

                  T₂  =  0 °C + 273  =  273 K

Solving Eq. 1 for P₂,

                                   P₂  =  P₁ T₂ / T₁

Putting values,
                                   P₂  =  (1.5 atm × 273 K) ÷ 308 K

                                   P₂  =  1.32 atm
Result:
           As the temperature is decreased so the pressure also decreases from 1.5 atm to 1.32 atm. Therefore the bag will contract.
5 0
3 years ago
Will give brainliest
mote1985 [20]

Answer:

1)Around 450 B.C., the Greek philosopher Democritus introduced the idea of the atom.

2)All matter is made of atoms, Atoms are indivisible and indestructible.Compounds are formed by a combination of two or more different kinds of atoms, A chemical reaction is a rearrangement of atoms.

3)B

Explanation:

7 0
3 years ago
Other questions:
  • What is the pH of the solution at the endpoint of a titration
    8·1 answer
  • A liquid occupies 321ml and has a mass of 376g. what is the density of the liquid?​
    14·1 answer
  • Write a checklist with at least three entries for how you can evaluate whether scientific information is reliable.
    14·1 answer
  • Which of the following best describes the relationship between products and reactants in an exothermic reaction?
    6·2 answers
  • The volume of a gas decreases to half of its original volume, but the gas maintains the same number of moles and temperature. Ac
    15·1 answer
  • As stated in the article, “As Sticky as a Gecko . . . but Ten Times Stronger!,” the adhesive the researchers developed sticks be
    9·2 answers
  • Why is the liquid oxygen machine producing less liquid oxygen than normal?
    14·2 answers
  • What is the mass of 4.76 moles of Na3Po4?
    10·1 answer
  • ANSWER ASAP!!
    9·2 answers
  • I need help wit this
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!