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
Maurinko [17]
3 years ago
14

Kathy is going to do an experiment in which she will grow bacteriain four prepared petri dishes:

Chemistry
1 answer:
mash [69]3 years ago
8 0

Unwashed ==> Most bacteria

Sanitizer == Will have less than Unwashed

Washed ==> least amount of bacteria

You might be interested in
100.0 grams of sucrose (C12H22O11)is dissolved in 1.50 L of water. What is the molality?
Nitella [24]

Answer:

Molality = 66.67g/L

Explanation:

Mass of sucrose = 100g

Volume of water = 1.50L

Molality = mass of substance/ volume in L

Molality = 100 / 1.50

Molality = 66.67g/L

Molality of 100g of sucrose in 1.50L of water is 66.67g/L

8 0
4 years ago
Name the components of an atom which determines each of the following
bulgar [2K]

Answer:

answer is Proton.

Explanation:

because electron is too heavy and other one has no charge

4 0
3 years ago
An isotope with the combination of subatomic particles (69n,50p+,50e-) is?
faust18 [17]

Answer:

A typical atom consists of three subatomic particles: protons, neutrons, and electrons (as seen in the helium atom below). Other particles exist as well, such as alpha and beta particles (which are discussed below). The Bohr model shows the three basic subatomic particles in a simple manner. Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus.

Explanation:

4 0
3 years ago
Which quantity can be calculated using the equation E=MC^2
r-ruslan [8.4K]

Answer:

The energy needed to split an atom into separate protons, neutrons, and electrons

Explanation:

The equation E = MC^2 is developed by Einstein’s Special Relativity Theory

where,

E = Energy

M = mass

C = speed of the light

The energy should be measured in Joules i.e J

The mass should be measured in Kilogram i.e Kg

And, the speed of the light should be measured in meters per second i.e ms-1

The C should be squared

Now the energy is required to divided into three particles i.e protons, electrons and neutrons

It also needs to allocate the nucleus into distinct protons and neutrons that we called binding energy of nuclear

And if the energy is required to take off an electron from an atom we called the energy of ionization

And if the energy is required to add an electron to an atom so we called it affinity of electron

8 0
4 years ago
On the basis of oxidation number consideration which of the following does not react with molecular oxygen no ,n2o,so2,so3,p4o6
sesenic [268]
N oxidation number in N₂O = 1
S oxidation number in SO₂ = 4
S oxidation number in SO₃ = 6
P oxidation number in P₄O₆ = 3
Therefore, the Sulfur in SO₃ will not react with molecular oxygen as Sulfur is already using all of its valence electrons in bonding.
8 0
3 years ago
Other questions:
  • Calculate the number of moles of solute present in each of the following solutions.
    7·1 answer
  • In one process, 6.05 kg of caf2 is treated with an excess of h2so4 and yields 2.85 kg of hf. calculate the percent yield of hf.
    11·1 answer
  • Describe some characteristics of a prokaryotic cell
    8·2 answers
  • One way to represent a substance is with a chemical formula. In the formula CO2, what do the symbols Cand o refer to?
    9·2 answers
  • A 1.00-L gas sample at 100.°C and 500. torr contains 52.0% helium and 48.0% xenon by mass. What are the partial pressures of the
    10·1 answer
  • Which is a function of a protein marcomolecule
    15·2 answers
  • What is the concentration if I have 200 mL of water and dissolve 13g of salt in it? Show your work!
    8·1 answer
  • When propyl alcohol is treated with acid, the initially formed intermediate is known as an oxonium ion. There is a scheme of a r
    8·1 answer
  • Compound X has the formula C8H14.
    12·1 answer
  • What reacts at room temperature with ethanol and also with ethanoic acid<br><br>​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!