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
Otrada [13]
3 years ago
15

What’s the mass of hydrogen gas...??

Chemistry
1 answer:
s344n2d4d5 [400]3 years ago
3 0
The mass of hydrogen gas is 1.00794 u ± 0.00001 u.  I hope this helps you out!!

You might be interested in
WITCH IS MADE BY WEATHERING ASH SEDEMENTS MAGMA OR MINERALS
algol [13]
Magma is made from sediments 

8 0
3 years ago
How many atoms are in a sample of 72.8 g calcium (Ca)?
xxMikexx [17]
Atomic mass Ca = 40.078 a.m.u

40.078 g -------------------- 6.02x10²³ atoms
72.8 g ---------------------- ??

72.8 x ( 6.02x10²³) / 40.078 =

4.38x10²⁵ / 40.078 = 1.093x10²⁴ atoms

hope this helps!
5 0
3 years ago
Read 2 more answers
What is the weakness of particle theory?
stich3 [128]

Answer:

The particle model does not take into account: the size and shape of particles. the space between particles.

5 0
3 years ago
How many milliliters of a 1.25 molar hydrochloric acid (HCl) solution would be needed to react completely with 60.0 grams of cal
stich3 [128]

<u>Answer:</u>

2400 mL

<u>Explanation:</u>

Ca + 2HCl \implies CaCl_2 + H_2

According to this equation, the stoichiometric ratio between Ca and HCl for the complete reaction is 1:2.

We know that the number of moles of Ca can be calculated using the mole formula. (<em>number of moles = mass / molar mass</em>)

Moles of Calcium = \frac{60}{40} = 1.5 mol

So the moles of HCl = 1.5 \times 2 = 3.0 mol

<em>Volume of HCl solution = Moles of HCl/ concentration of HCl</em>

Volume of HCl solution = \frac{3}{1.25} = 2400 mL

4 0
3 years ago
Determine how many moles of CO2 are required to produce 11.0 mol of glucose,
drek231 [11]

Answer:

Determine how many moles of CO2 are required to produce 11.0 mol of glucose,

i need points thanks for CO2moles

7 0
3 years ago
Other questions:
  • What is the temperature change on a 75.0 gram sample of mercury if 480.0 cal of heat are added to it? The specific heat of mercu
    8·1 answer
  • What is the main responsibility of scientists when enviermental laws are proposed?
    10·1 answer
  • In a biological reaction involving and enzyme the substrate binds to
    14·2 answers
  • Outer core made of alloy metal, mostly
    12·1 answer
  • When milk turns sour it is a
    14·2 answers
  • Radiation that changes direction as it passes through material is called what
    11·1 answer
  • What is the correct mathematical relationship between the number of moles, the volume, and the standard molar volume of a substa
    5·2 answers
  • What is an atomic mass unti
    10·2 answers
  • Um Is it in third period and has three electrons in its highest P orbitals
    15·1 answer
  • In general for main-group elements, atomic size _____ from left to right across a period and _____ down a group.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!