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
oksano4ka [1.4K]
3 years ago
14

HELP! Answer the question below PLEASE

Chemistry
1 answer:
garri49 [273]3 years ago
8 0

Answer: Francesco Redis Experiment part 1 : The maggots were not observed in setup B and setup C because the jars were covered.

part 2 : He discovered that maggots appeared on the meat in the control jar, the jar left open. No maggots appeared in the jar covered with gauze.

Pasteur Experiment

part 1:In the pastures Experiment the microorganisms come from the air.

part 2:Louis Pasteur's pasteurization experiment illustrates the fact that the spoilage of liquid was caused by particles in the air rather than the air itself.

Explanation:

You might be interested in
Ammonia is a gas with a characteristic pungent odor. It is sold as a water solution used in household cleaning. The gas is a com
Julli [10]

Answer:

Atomic mass of N relative to H is 13.9.

In periodic table mass of N is around 14 RAM

Explanation:

1 mol of ammonia has 1 mol of N, and 3 mole of H

NH₃

1 mol of H weighs 1 g, so the mole of H, present in ammonia are:

1.712 g / 1 g/m = 1.712 mole

Since the ratio is 1:3

1.712 mole/3 = 0.57 mole of N are present in the amonia

To calculate the atomic mass of N relative to H, let's consider it as molar weight.

Molar weight = mass / mole

7.933 g / 0.57 mole = 13.9 g/m

4 0
3 years ago
1. Do you believe we can bring an end to acid rain? How so?
Akimi4 [234]

Answer:

Emissions from Electricity. ...

Vehicle Emissions. ...

Reducing Electricity Consumption. ...

Reducing On-Road Vehicle Exhaust. ...

Other Considerations.

8 0
3 years ago
How many molecules would 3.45 moles of methane (CH4)
fenix001 [56]
How to answer the question? ⬇️
(Btw this is an example on how to solve it so just letting you know)

To answer this question, you must understand how to convert grams of a molecule into the number of molecules. To do this, you have to utilize the concepts of moles and molar mass.
A mole is just a unit of measurement. Avogadro's number is equal to
6.022
⋅
10
23
molecules/mole. This number is the number of molecules of a specific compound in which when you multiply the compound by it, it converts atomic mass into grams.
For example, one mole of hydrogen gas (
H
2
) or
6.022
⋅
10
23
molecules of
H
2
weighs 2.016 grams because one molecule of
H
2
has an atomic weight of 2.016.
So the overall solution for this problem is to use molar mass of
C
H
4
(methane) to convert grams of methane into moles of methane. Then, use Avogadro's number to convert moles of methane into molecules of methane.
One mole of methane equals 16.04 grams because a molecule of methane has an atomic weight of 16.04. The conversion factor will be 16.04 grams/mole.
48
g
C
H
4
⋅
1
m
o
l
C
H
4
16.04
g
C
H
4
⋅
6.022
⋅
10
23
m
c
l
s
C
H
4
1
m
o
l
C
H
4

When you multiple and divide everything out, you get
1.8021
⋅
10
24
molecules of
C
H
4

Notice this is a modified T-chart so the grams
C
H
4
cancels out when you do the first conversion, and the moles
C
H
4
cancels out when you do the second conversion. This leaves you with the unit molecules of
C
H
4
which corresponds to what the question asks.

This is something else and is not connected with the one above this comment.

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CH4, or 16.04246 grams.

Or

Therefore 3.4 grams of ammonia is equal to 0.1996359579590159 moles of ammonia. Multiplying this by 6.022 * 1023 we get 120220773882919374980000 molecules (or 1.2022 * 1023 molecules). ...
6 0
3 years ago
In Earth's water cycle, evaporation takes place as solid ice and snow are converted to water vapor. true or false?
valentinak56 [21]
This is true, vapor is just evaporated water. Like in machines, you have to fill it up with water so your machine can produce the water vapor. Hope this helps!!
4 0
4 years ago
Read 2 more answers
Hi friends so i rly need help in this question um plz answer
levacccp [35]
7. Average Atomic Mass
8. Atomic Number
9. Isotopes
10.Ions
11. Mass number
3 0
4 years ago
Read 2 more answers
Other questions:
  • Unemployment rate varies according to such factors as
    6·1 answer
  • Which of the following is not a technological way of improving air pollution
    6·2 answers
  • Zinc reacts with hydrochloric acid according to the reaction equation Zn ( s ) + 2 HCl ( aq ) ⟶ ZnCl 2 ( aq ) + H 2 ( g ) How ma
    7·1 answer
  • 1.Which phase of matter will maintain a constant volume, but not a constant shape?
    9·1 answer
  • Mg3(Si2O5)2(OH)2
    5·1 answer
  • Which organisms can digest cellulose? A. all animals that eat other animals B. most animals, including humans C. all plant-eatin
    9·1 answer
  • What is the molar mass of Al2(SO4)3?
    7·1 answer
  • If the density of mercury is 13.6 g/mL, what is the mass of 25.4 cm3 of<br> mercury?
    8·1 answer
  • What happens when water is added to quicklime? Write two observations.
    14·1 answer
  • Explain whether chromium is more or less reactive than aluminium.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!