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
vovikov84 [41]
3 years ago
5

What is a hypothesis

Chemistry
2 answers:
nikitadnepr [17]3 years ago
6 0

Answer:

A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Explanation:

^^

Ugo [173]3 years ago
4 0
An idea that is proposed for the sake of argument so that it can be tested to see if it might be true
You might be interested in
I need help with these questions please
svetoff [14.1K]
The first part of two is heat, not temperature, once that is cleared up: starting from 3: temperature, concentration, collisions, catalytic converter, surface area
3 0
4 years ago
22.4 liters of a gas at a constant temperature of zero Celsius and a pressure of 1 atmosphere is compressed to a volume of 6.2 l
zhannawk [14.2K]
<h2>Hello!</h2>

The answer is: The new pressure of the gas is 3.6 atm.

<h2>Why?</h2>

From the statement we know that the gas is kept at a constant temperature of 0°C, so, if the gas keeps a constant temperature we can use the Boyle's Law to solve this problem.

The Boyle's Law states that:

P_{1}V_{1}=P_{2}V_{2}

Where,  

P is the pressure of the gas.

V is the volume of the gas.

So, the given information is:

V_{1}=22.4L\\P_{1}=1atm\\V_{2}=6.2L

Now, substituting it into the Boyle's Law equation to calculate the new pressure, we have:

P_{1}V_{1}=P_{2}V_{2}\\\\1atm*22.4L=P_{2}*6.2L\\\\P_{2}=\frac{1atm*22.4L}{6.2L}=3.6atm

So, the new pressure is 3.6 atm.

Have a nice day!

4 0
4 years ago
An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 120.81 amu. What is the percent abund
kolezko [41]

Answer:

40.5%  is abundance of X-122

Explanation:

we know there are two naturally occurring isotopes of X, X-120  and X-122.

First of all we will set the fraction for both isotopes

X for the isotopes having mass 122

1-x for isotopes having mass 12 0

The average atomic mass of X is 120.81 amu

we will use the following equation,

122x + 120 (1-x) = 120.81

122x + 120 - 120x = 120.81

122x- 120x = 120.81 -120

2x = 0.81

x= 0.81/2

x= 0.405

0.405 × 100 = 40.5%

40.5%  is abundance of X-122 because we solve the fraction x.

now we will calculate the abundance of X-120.

(1-x)

1 - 0.405 = 0.595

0.595  × 100 = 59.5 %

59.5 %  for X-120.

5 0
3 years ago
5. A filled balloon has a volume of 5.6 L at 25 ˚C and it is placed into liquid nitrogen at a temperature of -78 ˚C. What is the
Yuri [45]
The answer -103, hope this helps
6 0
4 years ago
Write complete ionic and net ionic equations for the reaction between sulfuric acid (H2SO4) and calcium carbonate (CaCO3).
svetlana [45]

Answer:

Complete ionic equation:

2H²⁺(aq) + SO₄²⁻(aq) + CaCO₃(s)   →  H₂O(l) + CO₂(g) + Ca²⁺(aq) + SO₄²⁻(aq)

Net ionic equation:

2H²⁺(aq) + CaCO₃(s)   →  H₂O(l) + CO₂(g) + Ca²⁺(aq)

Explanation:

Chemical equation:

H₂SO₄(aq) + CaCO₃(s)   →  H₂O(l) + CO₂(g) + CaSO₄(aq)

Balanced chemical equation:

H₂SO₄(aq) + CaCO₃(s)   →  H₂O(l) + CO₂(g) + CaSO₄(aq)

Complete ionic equation:

2H²⁺(aq) + SO₄²⁻(aq) + CaCO₃(s)   →  H₂O(l) + CO₂(g) + Ca²⁺(aq) + SO₄²⁻(aq)

Net ionic equation:

2H²⁺(aq) + CaCO₃(s)   →  H₂O(l) + CO₂(g) + Ca²⁺(aq)

4 0
3 years ago
Read 2 more answers
Other questions:
  • Explain why saltwater is considered a mixture
    14·2 answers
  • Calculate the mass (in grams) of silver in 10.0 grams of silver sulfide ag2s
    11·1 answer
  • Write the equation that shows how phosphate ions react with calcium ions in hard water to form an insoluble precipitate.
    11·1 answer
  • Draw the product formed when the alcohol is oxidized with k2cr2o7. in some cases, no reaction occurs (if so, draw the given alco
    6·1 answer
  • T
    14·1 answer
  • Please help :(<br> I just need the bottom true or false part
    12·1 answer
  • No. free poijnts ,,,,,,,
    9·2 answers
  • ____ O3 --&gt; ____ O + ____ O2
    10·1 answer
  • A submarine fills a special storage area known as ballast with water in order to increase its density. This allows it to dive de
    7·1 answer
  • when 1.00 l 1.00 l of a 0.500 m l i b r 0.500 m libr solution is tripled by dilution with water, what is the number of moles of
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!