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
aleksley [76]
3 years ago
13

if a 1.85g mass of zinc produces 475 mL og gas and your balloon weighs 0.574 g and the room temperature is 20.5°C. calculate the

amount of zinc needed to produce enough gas to get your balloon airborne by adding 1 mL to the required balloon volume so that its density is less than that of the surrounding air.
Chemistry
1 answer:
aleksley [76]3 years ago
7 0
<span>You will use an ideal gas equation here. Let us denote 'x' as the unknown sample of zinc if another 1 ml of it is added to make a total of 476mL gas. The ideal gas equation is PV = nRT. Assume atmospheric conditions and then substitute everything to the equation.

(1atm)(0.476L) = (1.85 + x)(0.08206 L-atm/mol-K)(20.5+273K)
x = 1.83 g of zinc</span>
You might be interested in
Calculate the percent mass of sugar in mountain dew: The total mass of the mountain dew solution is 300g and there are 231 g of
s2008m [1.1K]

Answer:

c. 77 %

Explanation:

Percent mass (% mass) of solute = mass of solute/mass of solution × 100

According to this question, a mountain dew solution weighing 300grams contains 231 g of sugar. This means that:

% mass of sugar = 231g/300g × 100

% mass of sugar = 0.77 × 100

% mass of sugar = 77%.

4 0
2 years ago
In a mixture of gases exerting a total pressure of 2.50 atm, carbon dioxide has a mole fraction of 0.450. What is the partial pr
AlladinOne [14]

Answer:

1.12 atm is the correct answer

3 0
3 years ago
When a scientist shares her findings with other scientists she is
finlep [7]

Answer:

communicating results

Explanation:

5 0
3 years ago
Read 2 more answers
Look at the following balanced equation. How many atoms of oxygen (O) are present on the reactant side of the equation?
balu736 [363]

There are 6 atoms of oxygen on the reactant side of the following equation: 2Fe2O3 + 3C → 4Fe + 3CO2. Details about atoms can be found below.

<h3>How to find number of atoms?</h3>

The number of atoms of an element in a balanced equation is the amount of that element involved in the reaction.

According to this question, Iron oxide reacts with carbon to produce iron and carbon dioxide as follows:

2Fe2O3 + 3C → 4Fe + 3CO2

In this reaction, 2 × 3 atoms = 6 atoms of oxygen are present on the reactant side of the equation.

Learn more about number of atoms at: brainly.com/question/8834373

#SPJ1

4 0
2 years ago
1. Energy appears in two forms. What are they?
noname [10]
Number 1 is C number 2 is B and number 3 is also B
5 0
3 years ago
Other questions:
  • Isotope b has a half-life of 3 days. a scientist measures out 100 grams of this substance. after 6 days has passed, the scientis
    10·1 answer
  • I will mark brainly , please help !
    15·1 answer
  • While investigating greenhouse gases, I measured 0.1875 grams of carbon dioxide in a 500-gram sample of the atmosphere. What is
    10·1 answer
  • What do you call all water on earth surface
    7·1 answer
  • The molar solubility of calcium sulfide in a 0.222 M sodium sulfide solution is:________-
    5·1 answer
  • Electrons are to bonding as neutrons are to-
    6·1 answer
  • A chemistry student needs 90.00 g of thiophene for an experiment. She has available 0.50 kg of a 12.3% w/w solution of thiophene
    15·1 answer
  • at 298 k the H+ ion concentration of a aqueous solution is 1.00 x 10-5 M what is the pH of the solution
    5·1 answer
  • I just need answers please!!
    12·2 answers
  • Iron (Fe) is a/n:<br> Element<br> Mixture<br> Compound<br> Solution
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!