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
lorasvet [3.4K]
3 years ago
12

I cant seem to figure out ANY of these... help when you can pls :.)

Chemistry
1 answer:
Nonamiya [84]3 years ago
7 0
The first one is some reaction with water even I am studying the same
You might be interested in
Which of the following is true about the coefficients in a balanced chemical equation?
aliina [53]

Answer:

Where is the chemical equations?

6 0
3 years ago
Read 2 more answers
How many grams of water are made from the reaction of 4.0 grams of hydrogen gas with the given reaction 2H2+O2--->2H2O
Sergeeva-Olga [200]

Answer:

The mass of water is 36 g.

Explanation:

Mass of hydrogen = 4 g

Mass of water = ?

Solution:

First of all we will write the balance chemical equation:

2H₂ + O₂  →  2H₂O

Number of moles of hydrogen = mass / molar mass

Number of moles of hydrogen = 4 g/ 2 g/mol

Number of moles of hydrogen = 2 mol

Now we compare the moles of water with hydrogen from balance chemical equation.

                               H₂     :     H₂O

                                2      :       2

Mass of water = moles × molar mass

Mass of water =  2 mol × 18 g/mol

Mass of water =  36 g

If the water oxygen is in excess than mass of water would be 36 g.

4 0
3 years ago
Which planet is the smallest and the closest to the Sun?
jekas [21]
Mercury is the smallest and closest plant to the sun
7 0
3 years ago
Read 2 more answers
Why can scratching at the bottom of a flask induce crystallization?
Ksenya-84 [330]

Scratching causes cracks and crevices on the surface of the flask (though microscopically). These will act as favorable sites for nucleation, which leads to the formation of crystals.

7 0
2 years ago
7. Ionic bonds are at one end of the bond spectrum. What kinds of bonds are at the other end?
blondinia [14]

Answer:

non-polar covalent bonds

this is when the electronegativity difference between the two non-metal atoms is very little to cause a partial charge (delta positive and delta negative; δ+ and δ-) on the atoms

4 0
2 years ago
Other questions:
  • The approximate concentration of the NaOH solution you will prepare in Part A of this experiment is 0.12M. Calculate the number
    14·2 answers
  • Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22011. Which of the following is trueboth com
    14·2 answers
  • What is 93,000,000 in scientific notation?
    9·1 answer
  • When a 1.00 L sample of water from the surface of the Dead Sea (which is more than 400 meters below sea level and much saltier t
    7·1 answer
  • What is the percent composition of tungsten​
    14·2 answers
  • How do scientists know that they have created a new element?
    5·1 answer
  • What type of intermolecular force exist between H2O and Br2
    6·1 answer
  • How would life be different without polythene
    7·1 answer
  • How to know the elements amount of charge amount​
    14·1 answer
  • Plsss help i’ll give brainlist
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!