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
olga_2 [115]
3 years ago
7

At atmospheric pressure a balloon contains 2.00 l of nitrogen gas how would the volume change \

Chemistry
1 answer:
Amanda [17]3 years ago
3 0
The complete question; At atmospheric pressure a balloon contains 2.00 l of nitrogen gas, how would the volume change if the kelvin temperature was only 75 % of its original value? 
 The change in volume would be;
original volume × percentage 
= 2 ×0.75 = 1.5 L
Thus the volume would change by 1.5 L
You might be interested in
Which of the following is the electrical charge on an atom that contains 6 electrons, 3 neutrons, and 4 protons?
Y_Kistochka [10]

Answer:

Its electrical charge is -2.

4 0
3 years ago
How many molecules are present in 4.21 moles of HBr?​
salantis [7]

Answer:

The answer is

<h3>2.53 × 10²⁴ molecules</h3>

Explanation:

The number of molecules present can be found by using the formula

<h3>N = n × L</h3>

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 4.21 × 6.02 × 10²³

We have the final answer as

<h3>2.53 × 10²⁴ molecules</h3>

Hope this helps you

6 0
3 years ago
Formic acid, which is a component of insect venom, has a ka = 1.8 ´ 10-4. what is the [h3o+] in a solution that is initially 0.1
scoray [572]
Answer is: concentratio of H₃O⁺ ions is 4.2·10⁻³ M.<span>
Chemical reaction: HCOOH(aq) + H</span>₂O(l) ⇄ HCOO⁻(aq) + H₃O⁺(aq).<span>
c(HCOOH) = 0,1 M.
[</span>H₃O⁺] = [HCOO⁻] = x.<span>
[HCOOH] = 0,1 M - x.
</span>Ka = [H₃O⁺] · [HCOO⁻] / [HCOOH].
0,00018 = x² / (0,1 M - x).<span>
Solve quadratic equation: x = </span>[H₃O⁺] = 0,0042 M.
7 0
3 years ago
Calculate number of moles in 86.4 g of Ni
Ira Lisetskai [31]
Number of moles = mass of Ni /molecular mass of Ni

mass of nickel = 86.4 g
molecular mass of nickel = 58.69
number of moles of Ni in 86.4 g
=86.4/58.69
=1.472 mol  
(rounded to four significant figures instead of three because the first digit of the answer starts with a 1).
4 0
3 years ago
How does the appear from earth
san4es73 [151]

Answer:

Formation. When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust.

8 0
2 years ago
Other questions:
  • How temperature affects reaction rate
    10·2 answers
  • For the reaction shown, find the limiting reactant for each of the initial quantities of reactants.
    13·1 answer
  • A 400 mL sample of hydrogen gas is collected over water at 20°C and 760 torr the vapor pressure of water at 20°C is 17.5 torr. w
    9·1 answer
  • If the mass is 6.5g, and the volume is 25mL.. what is the density? PLEASE ANSWER ASAP
    15·1 answer
  • Which of the following elements is least likely to form a cation that will then form an ionic bond with an ion of a Group 7A ele
    5·1 answer
  • Which statement best explains how atmospheric
    5·1 answer
  •  A substance has 55.80% carbon, 7.04% Hydrogen, and 37.16% Oxygen. What is it's empirical and molecular formula if it has a mola
    13·2 answers
  • HELP HELP PLS !! <br> 5N<br> 21N
    6·1 answer
  • What are easy ways to<br>Study Chemistry ??​
    11·1 answer
  • Calculate the percentage of zinc I zncl2
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!