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
jenyasd209 [6]
3 years ago
10

If there is a graduated cylinder containing 20mL of water and a small rock is gently placed inside it, and the water level insid

e the graduated cylinder rises to 25mL...what is the volume of the small rock?
Chemistry
2 answers:
LekaFEV [45]3 years ago
8 0

Answer:

5

Explanation:

just subtract 20-25 and 5 is left over which is how much the water when up with the rock.

Vanyuwa [196]3 years ago
7 0

Answer:

5

Explanation:

quick maths

You might be interested in
If 2.00 moles of H₂ and 1.55 moles of O₂ react how many moles of H₂O can be produced in the reaction below?
jekas [21]

Answer:

2 mol H₂O

Explanation:

With the reaction,

  • 2H₂(g) + O₂(g) → 2 H₂O(g)

1.55 moles of O₂ would react completely with ( 2*1.55 ) 3.1 moles of H₂. There are not as many moles of H₂, thus H₂ is the limiting reactant.

Now we <u>calculate the moles of H₂O produced</u>, <em>starting from the moles of limiting reactant</em>:

  • 2.00 mol H₂  * \frac{2molH_2O}{2mol H_2} = 2 mol H₂O
5 0
2 years ago
6th grade help me pleaseeee
lozanna [386]

Answer:

D

Explanation:

The atomic number is the amount of protons in the nucleus of every atom in a specific substance

Hope this helps!

4 0
3 years ago
Read 2 more answers
PLEASE SHOW YOUR WORK!!
Rom4ik [11]

Answer:

6. 355.1 g of Na₂SO₄ can be formed.

7. 313 g of LiNO₃ were needed

Explanation:

<u>Excersise 6</u>.

The reaction is:  2 NaOH + H₂SO₄ --> 2 H₂O + Na₂SO₄

2 moles of sodium hydroxide react with 1 mol of sulfuric acid to produce 2 moles of water and 1 mol of sodium sulfate.

If we were noticed that the acid is in excess, we assume the NaOH as the limiting reactant. Let's convert the mass to moles (mass / molar mass)

200 g / 40 g/mol = 5 moles.

Now we apply a rule of three with the ratio in the reaction, 2:1

2 moles of NaOH produce 1 mol of sodium sulfate.

5 moles of NaOH would produce (5 .1)/2 = 2.5 moles

Let's convert these moles to mass (mol . molar mass)

2.5 mol . 142.06 g/mol = 355.1 g

<u>Excersise 7.</u>

The reaction is:

Pb(SO₄)₂+ 4 LiNO₃ → Pb(NO₃)₄  +  2Li₂SO₄

As we assume that we have an adequate amount of lead (IV) sulfate, the limiting reactant is the lithium nitrate.

Let's convert the mass to moles (mass / molar mass)

250 g / 109.94 g/mol = 2.27 moles

Let's make a rule of three. Ratio is 2:4.

2 moles of lithium sulfate were produced by 4 moles of lithium nitrate

2.27 moles of Li₂SO₄ would have been produced by ( 2.27 .4) / 2 = 4.54 moles.

Let's convert these moles to mass (mol . molar mass)

4.54 mol . 68.94 g/mol = 313 g

5 0
2 years ago
What is the Bronsted-Lowry definition of an acid?
victus00 [196]

The correct answer is that a compound that donates protons.  

On the basis of Bronsted-Lowry concept, a compound which accepts proton is considered as a base and the compound which donates protons is considered to be an acid. The strong acids and bases get ionized completely in aqueous solution, while the weak acids and weak bases get ionize partially.  

The conjugate base is illustrated as the species that is produced after the loss of proton of acid, while the conjugate acid refers to the species that is produced after the gain of protons.  

Thus, the Bronsted-Lowry definition of an acid is a compound that donates protons.  

6 0
3 years ago
Read 2 more answers
The Î""G°′ of the reaction is −7.180 kJ·mol−1. Calculate the equilibrium constant for the reaction at 25 °C.
nasty-shy [4]

Answer:

Explanation:The Î""G°′ of the reaction is −7.180 kJ·mol−1. Calculate the equilibrium constant for the reaction at 25 °

5 0
2 years ago
Other questions:
  • A solution at 25 degrees Celsius is 1.0 × 10–5 M H3O+. What is the concentration of OH– in this solution? 1.0 × 10–5 M OH– 1.0 ×
    9·1 answer
  • According to rounding rules for addition the sum of 27.1, 34.538, and 37.68 is
    5·1 answer
  • I need an answer asap
    15·1 answer
  • There are two main ways that minerals are classified. Which identifies those two main ways?
    10·2 answers
  • Which list ranks the gasses in the correct order from the
    10·2 answers
  • A given mass of air has a volume of 6.00 L at 101 kPa. At constant temperature, the pressure is decreased to 25.0 kPa. Calculate
    12·1 answer
  • What is the epicenter?
    12·1 answer
  • 1. What kinds of metals are REALLY reactive? why?
    6·1 answer
  • 10. Which statement about cellular respiration in plants and animals is true?
    7·2 answers
  • Uranium hexafluoride is a solid at room temperature, but it boils at 56C. Determine the density of uranium hexafluoride at 60.C
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!