Answer:
3.74L
Explanation:
PV=nRT
V=nRT/P
= 0.25mol*0.0821LatmK^-1*273k/1.50atm
=3.74L
A doctor is testing a new medication. He changes his results so his hypothesis is correct. He _____.
has a lot of integrity
is following a code of conduct
is committing scientific fraud
is showing high moral standards
Answer:
Scientific fraud! Scientific fraud, an act of deception or misrepresentation of one's own work, violates these ethical standards. It can take the form of plagiarism, falsification of data, and irresponsible authorship. Scientific fraud has been attributed to misdirected attempts to attain high levels of personal and professional success.
Hope this helped <3
calcium oxide (Cao) and carbon dioxide (CO2). If 100 g of
calcium carbonate is allowed to decompose, 56 g of calcium
oxide is produced. What mass of carbon dioxide is produced
by the decomposition?
g
Answer:
Explanation:
CaCO3 → CO2 + CaO
depending on the conservation of mass
mass of the product = mass of the reactant
100 g = ( X + 56 )
mass of CO2 = 100 - 56
= 44 g
Answer:
44g
Explanation:
correct your welcome have a nice day everyone
does a liquid have a shape??
Answer:
Yes, just not a fixed shape.
Explanation:
A liquid take shape of whatever is containing but that does not fix it. As long as it is being contained it retains it's shape, yet the second you release it from it's containment it becomes the shape and can take the physical properies of whatever it is contained by next.
I need helpp!! This is due tomorrow at 8 am it says to Calculate the density of a solid that has a mass of 32.5 g and displaces 6.7 mL of water.
a
Which of the following statements is true?
Lysosomes and chloroplasts are unique to plant cells.
O A nerve cell contains more mitochondria than a muscle cell.
Homeostasis on the cellular level is controlled by the cell membrane.
Instead of a cell membrane, plant cells have cell walls.
Answer: Homeostasis on the cellular level is controlled by the cell membrane.
Explanation:
Answer:
C
Explanation:
That's what the first guy said. lol
Support and explain your thinking with the emphasis on how you think offspring (babies) get their traits.
Answer:
The baby's get there traits from their parents and ancestors
which event would be impossible to explain by using John Dalton's model of the atom
Answer:
we need the model to answer
Explanation:
Identify the control group and the independent and dependent variables in the following scenario: 300 chickens are divided into three equal sized groups. Group A is injected weekly with 10 mg of a growth hormone. Group B is injected weekly with 25 mg of the growth hormone. Group C is not given any growth hormone. All 300 chickens are weighed after again after 3 months.
Answer:
the control group is group c
independent variable - number of mg of growth hormone
dependent variable - growth of chickens
Explanation:
the control has nothing added to it
the growth of chickens DEPEND on the growth hormome :)
Answer:
I saw your question 4 months ago about Overwatch
Explanation:
Im down to play bro lol , I play on pc aswell
hmu, my dis cord is Conspiracy#2546 and btag is Conspiracy#11218
How should you indicate that there are multiple polyatomic
ions in a chemical formula?
Answer: correct answer is C
Parentheses around the atoms in the ion an then added a subscript
Explanation:
A P E X
what element make up organic compounds?
3. Describe air using the terms: mixture, atoms, and molecules.
I
Air is a mixture of gases. Air is composed of molecules such as oxygen, nitrogen and carbon dioxide. Air also contains atoms of noble gases such as neon, argon etc.
Air is composed of 21% molecular oxygen and 78% molecular nitrogen. Also, there is about 0.03% of carbon dioxide molecules in air.
Air is generally defined as a mixture of gases owing to the number of gaseous substances that compose air.
Also, there is a trace amount of noble gases which largely exists as monoatomic species in air.
Learn more: https://brainly.com/question/19368011
What is a Mole...
I need an answer please..
Answer:
Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
Explanation:
Answer:
Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles
If carbon has 8 electrons is it a cation or anion?
Answer:
carbon is a -4 anion
Explanation:
It needs 4 electrons from other molecule(s)/element(s) to be stable.
Answer:
ation
Explanation:
)-
symbols
following elements
silver, Copper ,magnesium ,sulphur
Ag,Cu,Mg,S are the answers...............
Answer:
silver-Ag
copper-Cu
magnesium-Mg
sulphur-S
Explanation:
If you have difficulty removing a ring from your finger, you usually lubricate your finger with oil or soap
Why, in most cases, does this procedure work
Answer:
Because oil reduces the friction between the surface of your ring and your finger.
Thus it helps you to remove your ring easily
Hope it helps
brainliest to whoever answers, correctly.
Which actions are part of a system of methodical tests and refinements specific to technological design? 1 documenting, tinkering, testing 2 tinkering, presenting, testing 3 testing, documenting, pr esenting 4 presenting, tinkering, testing
Answer:
1. documenting, tinkering, testing
Explanation:
Technological design is defined as the process of study, design and development of new technologies.
There are some action in the methodical tests and refinements specific to technological design include documenting, tinkering, testing.
Documenting includes collecting all the information about the design and develop the product, tinkering involves repairing or adjust the issues found in the development, and testing helps to evaluate if the product is ready to work as it is supposed to.
Hence, the correct answer is "1."
To find the mass of substance the equation is
[Container and Substance] + [Container] = [Substance]
True
False
Answer: FALSE
In order to find the mass of a substance you need to measure the container with the substance in it, and then take a second measurement with the container empty. You would then subtract the two measurements to find the total mass of the substance, you would not add as stated in the question.
I need Helpppp pleaseee
Answer:
9) 126.86 amu
Explanation:
Please see the attached picture for full solution.
*I can't see the fractional abundance for Q8. Thus, I am unable to help you with that.
To find the avg atomic mass, multiply the fractional abundance to each of the masses and add them all up.
You have just won a block of pure 24-carat gold. Have you just procured an element, compound, or mixture?
Answer:
element
Explanation:
24 carat gold is an example of element.
What is element?A fundamental object that is difficult to divide into smaller pieces is known as an element. An element is a substance that cannot be broken down by non-nuclear reactions in chemistry and physics.
The atomic number, or quantity of protons in an element's nucleus, is used to categorize each element. Isotopes can be produced depending on the amount of neutrons in the nucleus.
Isotopes will have different physical properties although sharing the same chemical ones. Deuterium contains one proton and one neutron, tritium has one proton and two neutrons, but normal hydrogen has one proton and no neutrons.
Therefore, 24 carat gold is an example of element.
To learn more about element, refer to the link:
https://brainly.com/question/14347616
#SPJ3
what would be the mass of 9.03 x 1021 molecules of hydrobromic acid (HBr)?
If a cube has a volume of 25.0 mL, what mass, in grams, would it have to have to
be made of gold? Gold has a density of 19.3 g/mL. (Answer only the number with
the correct number of sigfigs) *
Answer:
482.5 grams
Explanation:
Given that,
Volume of a cube is 25 mL
The density of gold is 19.3 g/mL
We need to find the mass of the gold cube. We know that density is equal to the mass per unit volume. So,
[tex]d=\dfrac{m}{V}\\\\m=d\times V\\\\m=19.3\ g/mL\times 25\ mL\\\\m=482.5\ g[/tex]
So, the mass of the gold cube is 482.5 grams.
The energy produced in the stars results from
Answer:
Explanation:
Hydrogen fusion (nuclear fusion of four protons to form a helium-4 nucleus) is the dominant process that generates energy in the cores of main-sequence stars. It is also called "hydrogen burning", which should not be confused with the chemical combustion of hydrogen in an oxidizing atmosphere.
Describe the difference between an atomic element and a molecular element. Check all that apply. Check all that apply. Molecular elements exist with a single atom as their basic unit. Atomic elements exist with a single atom as their basic unit. H2, F2, and P4 are some examples of atomic elements. H, F, and P are some examples of molecular elements. Atomic elements have more than one atom in their basic unit. H, F, and P are some examples of atomic elements. H2, F2, and P4 are some examples of molecular elements. Molecular elements have more than one atom in their basic unit.
Answer:
Atomic elements exist with a single atom as their basic unit.
H, F, and P are some examples of atomic elements.
H2, F2, and P4 are some examples of molecular elements.
Molecular elements have more than one atom in their basic unit.
Explanation:
Atomic element exists as the smallest particle of an element that can take part in a chemical reaction. They exist with a single atom as their basic unit. The atomic number of an element is the number of protons present in the atomic nucleus of the element. Atomic elements are usually monoatomic such as H, F and P.
Molecular elements are the smallest particle that are capable of independent existence and still retains the chemical properties of those substances. They are capable of independent existence because they are diatomic. The combination of atoms of the same type produces a molecule of an element such as H₂, F₂, and P₂.
Which element has the highest electronegativity?
A) Li
B) F
C) Mg
D) Ca
Answer:
The correct answer is B) F
Explanation:
The electronegativity increases from left to right. The more you go right the greater the electronegativity and the more left you go, the lower.
-Hope that helps! :)
What is 5928km expressed in scientific notation
Answer:
5.928 x 10^3 km
Explanation:
Element
lon Charge
Nearest Noble Gas
Na
+1
What is the nearest noble gas to sodium?
The element with the chemical symbol ______ is a nonmetal help me please
Answer:
O
Explanation:
O is in the red which says nonmetal
1. Identifying two types of energy
2. Explaining how you know they are there
Answer:
Kinetic Energy and Potential Energy
Explanation:
When an object is in motion(ie.moving), it has kinetic energy. Energy stored in an object due to position and state, is called potential energy.
convert 0.0598 to scientific notation
