Answer:
This is a mixture.
Explanation:
While you can no longer see the salt when it's dissolved, it's still there! It's just in tiny, tiny, invisible to the eye molecules. It's now a mixture of H20 molecules and NaCl molecules in a solution :)
The water doesn't bond to the salt, so it's not a compound.
It's not just one element, it's a mixture of many!
It's not a pure substance since it's NaCl AND H2O.
The genetic information found in DNA, chromosomes, and determines
A. the traits of the organism
B. the organism as an animal
C. the safety of the nucleus
D. the type of cell
Answer:
a
Explanation:
the traits of the organism
A certain first-order reaction has a half-life of 20.0 minutes. How much time is required for this reaction to be 75% complete?
Answer:
X = 2
Explanation:
As you know, the rate of a first-order reaction depends linearly on the concentration of a single reactant. The rate of a first-order reaction that takes the form
how many molecules are there in 0.45 moles of so3
Answer:
2.71
Explanation:
Which diatomic molecule (H2, N2 or O2) forms the strongest bond and why
Answer:
Hydorgen will.
Because hydrogen has 1 as valency.
Calculate the concentration:
2a) 45g of sodium hydroxide in 3dm3 of solution.
2b) 0.256g of sodium chloride in 500cm3 of solution.
Answer:
2a) 15 g/dm3
2b) 0.512 g/dm3
Explanation:
Use the concentration = mass/volume equation.
PLEASE HELP!! Is this an element or compound?
copper (ll). oxide (CuO)
Please hurry!!
Answer: Compound
Explanation:
Copper(II) oxide or cupric oxide is the inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu₂O or copper(I) oxide. As a mineral, it is known as tenorite.
3. Which of the following do all living organisms have in common? A. Cells held up by cell walls B. The method to get water and food into their cells C. Cells are made from pre-existing cells D. Special cells that can do many different things
8. The most common element used in nuclear fission reactors is uranium. The three nuclides, U-233, U-235, and U-238, are isotopes of uranium because they have the same number of protons per atom and...*
(1) the same number of electrons per atom
(2) the same number of neutrons per atom
(3) a different number of electrons per atom
(4) a different number of neutrons per atom
Answer:(D) different number of neutrons per atom
Explanation: Honestly, I just looked it up on Socratic.
True or false: Heterotrophs need to go find and eat food.?
:FALSE
:TRUE
Answer:
Explanation:
Heterotrophs cannot make their own food, so they must eat or absorb it. For this reason, heterotrophs are also known as consumers. Consumers include all animals and fungi and many protists and bacteria. They may consume autotrophs or other heterotrophs or organic molecules from other organisms
Name the 3 steps involved in the treatment of polluted water? class 7
Explanation:
The processes involved in removing the contaminants include physical processes such as settling and filtration, chemical processes such as disinfection and coagulation, and biological processes such as slow sand filtration
helooo i need help please :)
what is the mass in grams of 1.204x10^24 molecules of hydrogen gas (H2) ?
Answer:
4.03 g
Explanation:
The mass in grams of the hydrogen gas is 4.0 g
StoichiometryFrom the question,
We are to determine the mass in grams of the hydrogen gas.
First, we will determine the number of moles of hydrogen gas present.
Using the formula,
[tex]Number\ of\ moles =\frac{Number\ of \ molecules}{Avogadro's\ constant}[/tex]
From the given information,
Number of hydrogen molecules = 1.204 × 10²⁴ molecules
Thus,
Number of moles of hydrogen gas present = [tex]\frac{1.204 \times 10^{24} }{6.02 \times 10^{23} }[/tex]
Number of moles of hydrogen gas present = 2 moles
Now, for the mass of the hydrogen gas
Using the formula,
Mass = Number of moles × Molar mass
Molar mass of hydrogen gas = 2.016 g/mol
Then,
Mass of the hydrogen gas = 2 × 2.016
Mass of the hydrogen gas = 4.032 g
Mass of the hydrogen gas ≅ 4.0 g
Hence, the mass in grams of the hydrogen gas is 4.0 g
Learn more on Stoichiometry here: https://brainly.com/question/2861244
Which group of microorganisms has the ability to mutate?
P5-F2 + Ar --> ArF3
P5a- How many moles of F2 (Fluorine) are needed to produce 9 mole of ArF3 (Argon trifluoride)?
P5b- How many moles of Argon (Ar) are consumed in a reaction that consumes 5 moles of F2 (fluorine)?
I need the answers for the p5 part please help
Answer:
5a. 13.5 moles of F₂
5b. 3.33 moles of Ar.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
3F₂ + 2Ar —> 2ArF₃
From the balanced equation above,
3 moles of F₂ reacted with 2 moles of Ar to produce 2 moles of ArF₃.
5a. Determination of the number of mole of fluorine, F₂, needed to produce 9 moles of ArF₃.
From the balanced equation above,
3 moles of F₂ reacted to produce 2 moles of ArF₃.
Therefore, Xmol of F₂ will react to produce 9 moles of ArF₃ i.e
Xmol of F₂ = (3 × 9)/2
Xmol of F₂ = 13.5 moles
Thus, 13.5 moles of F₂ is needed.
5b. Determination of the number of mole of Ar needed to react with 5 moles F₂.
From the balanced equation above,
3 moles of F₂ reacted with 2 moles of Ar.
Therefore, 5 moles of F₂ will react with = (5 × 2)/3 = 3.33 moles of Ar.
Thus, 3.33 moles of Ar was consumed.
Calculate the number of moles of gas that occupy a 16L container at a pressure of 3 atm and a temperature of 48oC
Answer:
1.81
Explanation:
3*16=n(0.0821)(48+273)
Which salt is the most common found in ocean water?
magnesium
calcium carbonate
potassium
sodium chloride
Answer:
Sodium chloride
Explanation:
There are several salts in seawater, but the most abundant is ordinary table salt or sodium chloride (NaCl). Sodium chloride, like other salts, dissolves in water into its ions, so this is really a question about which ions are present in the greatest concentration. Sodium chloride dissociates into Na+ and Cl- ions.
Which of the following could not be an empirical formula? a CH4 b Na2O c NaCl d H2O2
Answer:
C NaCl will not be an empirical formula.
Answer:
C naCl
Explanation:
it wouldnt be an empiricla formula
Al2(SO4)3 + 6 K --- > 3 K2SO4 + 2 Al
In an experiment, 46.8 grams of aluminum sulfate is reacted to make how many grams of potassium sulfate?
Yes
OO
No
Balanced or Not Balanced? *
2 NaCl + 2 F2 → 2 NaF + 1 C12
Yes
No
Answer:
No, not well balanced
Explanation:
2Nacl+F2=2Naf+Cl2
The inflation of airbags is due to the breakdown of a single chemical substance into two separate substances.
Two molecules of sodium azide (NaN3) break down into sodium (Na) and nitrogen gas (N2) during the reaction.
How many sodium (Na) atoms are produced in the reaction?
1 Na atom
2 Na atoms
3 Na atoms
Answer:
The correct answer would be
B. 2 Na atoms
Explanation:
As seen in the picture below,
In a given population, which members are most likely to survive and produce offspring?
Answer:
Those individuals with advantageous traits are more likely to survive and reproduce. The survivors pass down these advantageous traits to their offspring.
Explanation:
The unique shape of DNA allows what
Answer: to copy itself during cell division
Explanation:
Which system is responsible for the production of red blood cells?
hormone erythropoietin (EPO) is responsible for the production of red blood cells.
On the periodic table, in which period is copper?
Answer:
At the top of Group 11 above silver and gold.
Period 4
Explanation:
Which type of bonding forms due to electrical attractions between oppositely charged elements
Answer:
Explanation:
Ionic bond
Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
In 2005, scientists used cells from a dog named Tai to produce a new puppy with DNA identical to Tai's.
What genetic technology was used?
Answer:
Cloning
Explanation:
This is the process of producing a organism genetically identical to the organism the cells came from.
Answer: cloning
Explanation:
Elements are organized on the table according to their _____________ ___________ , usually found near the top of the square.
Answer:
atomic number
Explanation:
Elements are organized on the table according to their atomic number, usually found near the top of the square.
Answer:
by their atomic number
hope this helped
Solutions of potassium chloride and silver nitrate are mixed.
Answer:
A solution of potassium chloride when mixed with silver nitrate solution forms an insoluble white substance silver chloride.
Explanation:
:)
Which substance would be the strongest?
carbon
steel
gold
silver
Answer:
steel
Explanation:
Answer:
B. STEEL
Explanation:
I'LL GIVE 30 POINTS PLEASE ANSWER!!!
Which terms correctly identify the indicated structures in this sketch of a cell viewed under a microscope? Match each label to the correct cell part. Question 5 options: Golgi Apparatus Nucleus Endoplasmic Reticulum Mitochodrion Ribosome Lysosome
1.
2.
3.
4.
5.
6.