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
svetlana [45]
3 years ago
6

!HELP PLEASE!

Chemistry
2 answers:
mr_godi [17]3 years ago
5 0
I believe that the answer is D.
Hope this Helps

Vlad [161]3 years ago
4 0
D. protista and plantae
You might be interested in
The only positive ion found in H2SO4(aq) is the
Hitman42 [59]

The answer is ammonium iron

3 0
3 years ago
If you have 30.O g of hydrogen gas burned in excess oxygen how many moles of water can you make
vladimir1956 [14]

Answer:

15 moles

Explanation:

Data given:

mass of hydrogen (H₂) = 30.0 g

amount of oxygen (O₂) = excess

moles of water = ?

Solution:

First we look to the reaction in which hydrogen react with oxygen and make (H₂O)

Reaction:

              2H₂  + O₂  -----------> 2H₂O

Now look at the reaction for mole ratio

             2H₂  + O₂  -----------> 2H₂O

             2 mole                       2 mole

So it is 2:2 mole ratio of hydrogen to water

As we Know

molar mass of H₂  = 2(1) = 2 g/mol

molar mass of H₂O = 2(1) + 16 = 18 g/mol

Now convert moles to gram

                  2H₂         +       O₂        ----------->    2H₂O

          2 mole (2 g/mol)                                 2 mole (18 g/mol)

                    4 g                                                     36 g

So,

we come to know that 4 g of hydrogen gives 36 g of water then how many grams of water will be produce by 30 grams of hydrogen.

Apply unity formula

                       4 g of H₂ ≅ 36 g of H₂O

                        30 g of H₂ ≅ X of H₂O

Do cross multiplication

                  X of H₂O =  30 g x 36 g / 4 g

                  X of H₂O =  270 g

Now convert grams of H₂O into moles

               No. of moles = mass in grams/molar mass

Put values in above formula

               No. of moles = 270 g / 18 (g/mol)

               No. of moles = 15 mol

so 30 gram of hydrogen produce 15 mol of water.

5 0
3 years ago
Which of the following is an acid?<br><br> Be(OH)2<br> HCl<br> LiBr<br> NH3
Lyrx [107]

Answer:

HCl is the correct answer

4 0
3 years ago
Read 2 more answers
10 g of a solute is added to 1.00 L of pure water. Half of the added solute fails to dissolve. What can you conclude?
ryzh [129]

If in the solution, half of the added solute fails to dissolve. The solution started out supersaturated. The correct option is b.

<h3>What is supersaturation?</h3>

Supersaturation is the condition where the solutes exceed the amount that can be dissolved in a solution.

Supersaturation occurs when the solute no longer mix in the solution.

Thus, the correct option is b. The solution started out supersaturated.

Learn more about supersaturation

brainly.com/question/16817894

#SPJ1

5 0
1 year ago
Which of the following is the balanced equation for this process?
Hunter-Best [27]
The answer is A.Hope this helps
8 0
3 years ago
Other questions:
  • a r. tank contains H. initially at 100 kn/m2 and 20°C. 1 1/2 kg of H added so that t2 and p of the tank is 30°C and 250 kpa, Det
    13·1 answer
  • Summarize the characteristics of each type of element below
    9·1 answer
  • How many moles of NaOH are present in 27.5 mL of 0.270 M NaOH?
    15·1 answer
  • Two conditions are required for cloud formation:cooling of the air and
    10·1 answer
  • Consider the following mechanism: O3 =&gt; O2 + O NO + O =&gt; NO2 What is the role of O2? A. intermediate B. catalyst C. reacta
    13·1 answer
  • when obtaining energy, why mushrooms are more like elephants eating and not like dandelions absorbing sunlight.
    5·1 answer
  • Mr. Watson's students brought him a cake on his birthday because he was their favorite teacher. Before he blew out the candles,
    14·2 answers
  • One question from Gases quiz
    7·1 answer
  • Determine the number of Au atoms found in 5.18 grams of gold.
    14·1 answer
  • When connected to a hydrogen electrode, an electrode with a negative standard reduction potential will carry out
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!