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
spayn [35]
3 years ago
6

2H2 + O2 -> 2H20 How many grams of oxygen are needed to produce 25 grams of H20

Chemistry
1 answer:
vaieri [72.5K]3 years ago
7 0

Answer:

luyxwfuowdqulgwqofugvwfwgvoueugbvfebfvebh

Explanation:

You might be interested in
How many significant figures are in 0.0233?
viva [34]

Answer:

there are 3 significant figures

Explanation:

do not count the first 2 zeros. only the nimbers after the zero

7 0
4 years ago
An atom of boron has an atomic number of 5 and an atomic mass of 11. The atom contains
Liono4ka [1.6K]

Answer:

5 protons, 5 electrons, and 6 neutrons

3 0
3 years ago
The prefix ‘kilo-‘ means a thousand.
Blababa [14]

Answer:

0.97 kg, 1.0kg

Explanation:

As you have mentioned in the question, to convert kilo-gram to grams, this conversion is used, 1 kilogram = 1,000 grams

Initially, when one has to convert from one unit to another, there is a lot of confusion. To avoid any such, multiply and divide the number with units to which it has to be converted.

Here,

970 g = 970 g \times\frac{1 kg}{1 kg}

This makes no difference to the number.

970 g =  970 g \times\frac{1 kg}{1000 g}

As, 1 kg= 1,000 g

970 g =  \frac{970}{1000} kg

970 g = 0.97 kg

Rounding this off to the nearest tenth of a kilogram.

The tenths place is immediately to the right of the decimal point.

Here, 9 is at the tenth's place. Round the tenth's place up if the digit at hundredth's place is greater than or equal to 5. Since, 7 > 5, up the number at tenth's place.

So, answer is 1.0 kg

8 0
3 years ago
Can light move through space even though there are no molecules?
amid [387]

Answer:

This means that waves need a medium to propagate, but light waves propagate where no particles are present. ...

7 0
3 years ago
Describe the difference between at atom and an ion in regards to their substaomic<br> particles.
tangare [24]

Answer:

-Atoms are neutral; they contain the same number of protons as electrons. By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion.

-An atom has an equal number of protons and electrons. An ion has an imbalance between the number of protons and electrons.

-An atom has no electrical charge. Ions have an electrical charge because they have an imbalance of protons and electrons.

Explanation:

A cheerful teen willing to help,

wishing you a splendiferous day,

stay salty...

5 0
3 years ago
Other questions:
  • If 2,035 cal of heat is added to a 500.0 g sample of water at 35.0°C, what is the final
    10·1 answer
  • Jason measures three values of density for his unknown. The values he obtains are: 1.019 g/mL 1.498 g/mL 1.572 g/mL What is the
    10·1 answer
  • How are gems different from regular minerals? Gems are softer than regular minerals. Regular minerals are more beautiful than ge
    8·2 answers
  • A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 351.0 Torr at 45.0 °C. Calculate the value of ΔH°vap for this
    5·2 answers
  • in order to find the molar mass of an unknown compound, a research scientist prepared a solution of 0.930 g of an unknown in 125
    10·1 answer
  • A movable piston traps 0.205 moles of an ideal gas in a vertical cylinder. If the piston slides without friction in the cylinder
    7·1 answer
  • 8th grade science by what process does carbon dioxide enter the ocean
    10·2 answers
  • A round, three dimensional object is a?
    13·1 answer
  • Why do silver and copper have similar properties?<br> (7th Grade science)
    6·2 answers
  • a set of pulleys is used to lift a piano weighing 1,000 netwons. the piano is lifted 3 meters in 60 seconds. How much power is u
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!