Answer:
Calcium chloride react with silver nitrate to produce calcium nitrate and silver(I) chloride.
Answer:
Silver Chloride and Calcium Nitrate
Explanation:
calcium chloride + silver nitrate = Silver Chloride + Calcium Nitrate
^ ^ ^ ^
The Reactants The Products
2AgNO3 + CaCl2 -> 2AgCl(ppt) + Ca(NO3)2
1.Which of the following would decrease the rate of a chemical reaction?
A Increase the temperature
B Reduce the concentration of a reactant
C Increase the concentration of a reactant
D Add a catalyst
Answer:
d.) add a catalyst
Explanation:
ae per I know this is Ur , but I am not sure so u check it
B. Reduce the concentration of a reactant
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another.When the surface area of reactants is more the sites available for the collisions increase. More collisions between the reactants increases the rate of a chemical reaction. Decreasing the surface area of reactants decreases available site for collision. This eventually decreases the rate of a chemical reaction.To decrease the rate of a chemical reaction, B. Reduce the concentration of a reactantFor more information:
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Pleaseeee help me
balance the following formula equation Al(s) + CuCl2 (aq) = AICI3 (aq) + Cu(s) Coloress
Answer:
[tex]2Al (s) + 3CuCl2( aq) --> 2AlCl3 (aq) + 3Cu(s)[/tex]
Explanation:
The main thing for this equation is to follow the amount on each side. Count each element on each side. Then by looking at the numbers figure out what numerical digit would make them equal.
For example:
On the left we have
Cu=1 and Cl=2.
But on the right we have
Cu=1 and Cl=3.
In order for them to be the same, we must add a coefficient of 3 to CuCl2 (aq0 on the left and a coefficient of 3 to Cu(s) on the right.
The smallest part of a compound that still has the properties of that compound is a(n)
OA. orbital.
ОВ.
molecule
OC.
mixture
OD.
nucleus.
a molecule is the smallest particle of a compound is still has the compounds property it consists of two or more atoms bonded together
Which statement describes the difference between covalent bonds and Van
der Waals forces?
A. Covalent bonds form when there is an attraction between
nonpolar molecules, while Van der Waals forces cause two atoms
to share valence electrons.
B. Covalent bonds occur when two atoms share valence electrons,
while Van der Waals forces cause an attraction between positive
and negative ions.
C. Covalent bonds form when two atoms share valence electrons,
while Van der Waals forces cause an attraction between nonpolar
molecules
D. Covalent bonds form from the attraction of positive ions and freely
moving electrons, while Van der Waals forces cause an attraction
between nonpolar molecules.
it
Answer:
C. Covalent bonds form when two atoms share valence electrons,
while Van der Waals forces cause an attraction between nonpolar
molecules
Explanation:
A.P.E.X
The statement that describes the difference between covalent bonds and Vander Waals forces is that covalent bonds form when two atoms share valence electrons, while Van der Waals forces cause an attraction between nonpolar molecules.
What is covalent and Vander waal bonding?Covalent bonds are bonds formed as a result of sharing of electrons between atoms of a compound. Examples of covalent compounds are C2H2, CO2.
On the other hand, van der waal forces are weak electrostatic forces that attract neutral molecules to one another. Examples of van der waal forces are hydrogen bonding.
Therefore, statement that describes the difference between covalent bonds and Vander Waals forces is that covalent bonds form when two atoms share valence electrons, while Van der Waals forces cause an attraction between non polar molecules.
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Liquid hexane e (CH 3 (CH 2 ) 4 CH 3 ) will react with gaseous oxygen (O 2 ) to produce gaseous carbon dioxide (CO 2 ) and gaseous water (H 2 O) . Suppose 2.59 of hexane is mixed with 2.9 of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits .
Answer:
Explanation:
Hi I'm so sorry hope you have a good day
A weather balloon filled with helium has a volume of 700 L at STP. To find the mass of helium which conversion factors would you use
A) 22.4 L/mol x 4 g/mol
B) 700 L / 4 g/mol
C) (22.4 L/mol / 700 L ) / (4 g/mol)
D) (700 L / 22.4 L/mol) (4 g/mol)
Answer:
D: (700 L / 22.4 L/mol) (4 g/mol)
Explanation:
At STP, Molar volume of a gas = 22.4 L/mol
Now, we are told that helium has a volume of 700 L at STP.
Also, atomic mass of helium = 4 g/mol
Thus, the mass of helium is given as;
(700 L/22.4 L/mol) × 4 g/mol
How do the ideas of electrolytes and IV fluids relate?
Answer:
Electrolytes, particularly sodium, help the body maintain normal fluid levels in the fluid compartments because the amount of fluid a compartment contains depends on the amount (concentration) of electrolytes in it. If the electrolyte concentration is high, fluid moves into that compartment (a process called osmosis).
Explanation:
Answer:
Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine, tissues, and other body fluids. Electrolytes are important because they help
Balance the amount of water in your body
Balance your body's acid/base (pH) level
Move nutrients into your cells
Move wastes out of your cells
Make sure that your nerves, muscles, the heart, and the brain work the way they should
Sodium, calcium, potassium, chloride, phosphate, and magnesium are all electrolytes. You get them from the foods you eat and the fluids you drink.
The levels of electrolytes in your body can become too low or too high. This can happen when the amount of water in your body changes. The amount of water that you take in should equal the amount you lose. If something upsets this balance, you may have too little water (dehydration) or too much water (overhydration). Some medicines, vomiting, diarrhea, sweating, and liver or kidney problems can all upset your water balance.
Treatment helps you to manage the imbalance. It also involves identifying and treating what caused the imbalance.
hope it's help you plz mark as brain listPLEASE HELP THIS IS SCIENCE
ILL MARK U BRAINLIEST
Answer: f=ma
Explanation:
Calcium has the symbol Ca and its ions have a charge of +2. Chlorine has the symbol Cl and its ions have a charge of -1. In the ionic compound calcium chloride, how many chloride ions are there for each calcium ion?
Answer:
There are two chloride ions for each calcium ion
Explanation:
The compound has to have an overall neutral charge. Meaning that the positive charges from calcium have to be canceled out by the negative charges of chlorine.
If there are two chloride ions for each calcium ion, the charges would cancel themselves out (2 * -1 would cancel out with +2).
2. Which group of elements are the most electronegative? *
Alkali Metals
Alkaline Earth Metals
Boron Group
Carbon Group
Nitrogen Group
Oxygen Group
Halogens
Noble Gases
Answer:
group 2
Explanation:
all this are found in group 2
WILL MARK BRANLIEST HELP PLEASE
When copper sulfate and zinc metal interact, one atom of zinc replaces one atom of copper while the sulfate, made of 5 atoms, is unchanged. How many atoms are there before and after the interaction?
before: 5 atoms; after: 5 atoms
before: 6 atoms; after: 7 atoms
before: 6 atoms; after: 6 atoms
before: 7 atoms; after: 7 atoms
Why does Sodium Chloride have a higher melting point than Sugar?
a. intermolecular forces are weaker
b. intermolecular forces are slightly stronger
c. intermolecular forces are very strong
d. melting point is based on composition and not bonding
Answer:
intermolecular forces are very strong
write down the formula for B
example:
Hydrogen + Fluorine = Hydrogen Fluorine
help
Answer:
P³⁻ + Cl⁻ --> PCl₃
Explanation:
PCl₃: phosphorus trichloride. prefix in front of chloride is "tri"–meaning three.
Answer:
phosphorus + chlorine = phosphorus trichloride
(He asked for word equation)
Which of the questions below is scientific? A. What is my blood pressure right now? B. How does regular exercise affect blood pressure? C. Who invented the device used to measure blood pressure? D. Why do most pharmacies have machines that read blood pressure?
Answer:
B
Explanation:
the reason as to why B is the answer is because, the question is one that you will have to study and find more information about, while the others are simple and do not require you to go into such detail and research.
A sample of nitrogen occupies a volume of 3.0 L at 0 ℃ and 1.21 atm pressure. To which temperature (in ℃) should the gas be cooled in order to halve its volume while maintaining a constant pressure?
Answer:
Thegas should be cooled to -136.5°C.
Explanation:
Volume of a gas is directly proportional to its temperature on the kelvin scale. This is called Charles' law.
Initially, the gas had a volume of 3.0 L at 0°C(273 K).
We have to have the temperature at which the volume of the gas will be 1.5 L.
Let V1=3 L, T1=273 K, V2=1.5 L, T2=?
By Charles' law,
V1/T1=V2/T2
T2
=(V2×T1)/V1
=(1.5 L×273K)/3L
=136.5 K
=(136.5-273)°C
= -136.5 °C
Bombardier beetles release a burst of hot chemical spray with a popping sound. The chemical is sprayed from a structure present under the belly of the beetles.
Which is the likely advantage of such a behavior?
It allows the beetles to attract mates.
It allows the beetles to move obstacles out of their paths.
It allows the beetles to escape from predators.
It allows the beetles to stay warm in cold conditions.
It allows the beetles to escape from predators
is there a relationship between CO2 levels in average global temperatures
Answer:
Yes
Explanation:
A small part of the correspondence is due to the relationship between temperature and the solubility of carbon dioxide in the surface ocean, but the majority of the correspondence is consistent with a feedback between carbon dioxide and climate.
Developing Scientific knowledge
Fill in each blank with the word that best completes the statement
Scientists develop knowledge by making
about the natural world that may lead to a
scientific question
A scientific question may lead to an)
which can be tested
The results of
can lead to changes in scientific knowledge.
Answer:
Scientists develop knowledge by making observation about the natural world that may lead to a scientific question.
A scientific question may lead to a(n) hypothesis which can be tested.
The results of experimentation can lead to changes in scientific knowledge.
Explanation:
In the process of developing scientific knowledge, scientists carry out series of observations on what happens in the natural world. This helps them to develop scientific questions. These scientific questions drawn can then lead to hypotheses which are testable.
The testing process leads to experimentation. It is in this process that much scientific questions receive answers. Testing actually lies at the core of scientific inquiry for all scientists. Whatever hypothesis made must always be tested.
The result of the testing or experimentation brings changes in scientific knowledge.
Which two statements describe what happens to the nuclei of atoms during a fusion reaction? O A. Large nuclei break apart into two or more smaller nuclei. O B. A small amount of mass in the nuclei that combine is converted to energy. O c. Each nucleus formed has fewer protons than each original nucleus had. O D. Nuclei with small masses combine to form nuclei with larger masses.
Answer:
D. Nuclei with small masses combine to form nuclei with larger masses.
B. A small amount of mass in the nuclei that combine is converted to energy
Explanation:
A nuclear fusion, in contrary to fission, is the process by which the nuclei of two atoms combine to form a much larger atom with a large nuclei. Likewise, during a fusion reaction, a large amount of energy is released from the small amount of mass in the nuclei (two) that combines.
According to this question, the following are true of a fusion reaction:
- Nuclei with small masses combine to form nuclei with larger masses.
- A small amount of mass in the nuclei that combine is converted to enormous energy.
Where do an organisms genes come from?
O Mother
O Father
O Both mother and father
O Neither mother nor father
Answer:
Organisms genes come from both mother and father :3
Explanation:
:3
How many kJ are 3,340J?
options:
3,340,000 kJ
334,000 kJ
3.340 kJ
33.40 kJ
Drag each item to show if it is matter or not matter.
light bulb added to
sunlight
heat
lamp
matter
light bulb
not matter
Scientists are now able to use the genetic code of organisms to find out more about their evolutionary history. How is this most likely to impact classification
The group of choices associated with the given question are as follows:
Organisms once thought to be unrelated may be found to be related.
Mode of nutrition of some organisms may change.
Organisms that do not have a backbone may develop one.
All multicellular organisms may be found to be prokaryotes
Answer:
The correct answer would be - Organisms once thought to be unrelated may be found to be related
Explanation:
Classification of the organisms is based on the shared characteristics and structural or environmental similarities of the organisms which are modified and evolved during the period of time. It is also known as life sciences evolve and genetic code provides more accurate information.
These evolutionary changes and will lead to certain organisms that are once thought to be unrelated organisms that may actually be related based on a genetic code. These codes have every small and accurate change that occurs and can also find out when these changes occured.
6. Besides hydrogen and the polyatomic ion ammonium, what type of element forms cations: metal, metalloid, non-metal?
Answer: Metals
Explanation:
When an atom accepts an electron negative charge is created on atom and is called as anion.
When atom loses an electron positive charge is created on atom and is called as cation.
The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Thus metals form cations.
A scientist is using robots to perform thousands of experiments on different
chemical compounds to see how they affect cancer cells. What is this
process called?
A. An intravenous solution
B. Evaluating test results
C. Screening
D. Engineering process
A scientist is using robots to perform thousands of experiments on different chemical compounds to see how they affect cancer cells.This process is called Screening.
What is screening?The method to test diseases and health condition of body used by scientist and doctor is called screening. The screening helps to find problem earlier and treat them.
What is an intravenous solution?The liquid given to replace water, sugar and salt needed if you are ill or having operation.There are three type of an intravenous solution, isotonic, hypotonic and hypertonic.This an intravenous solution used in an intravenous therapy.What is evaluating test?The process by which of system and component are compared against requirement and specification through testing. The result of the evaluating test is called Evaluating test resultsWhat is Engineering process?The process used by Engineer design and create functional products. This process is a series of steps.To learn more about chemical compounds here.
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Answer: screening
Explanation:
2.
Aluminium reacts with iron(III) oxide as shown.
iron(III) oxide + aluminium → iron + aluminium oxide
Which statement about this reaction is correct?
A
Aluminium is oxidised.
B
Aluminium oxide is reduced.
C Iron(III) oxide is oxidised.
D
Iron is oxidised.
Answer:
A is the answer..............
.............
Needing help please help me
Answer:
18. E. 0%
19. D. 25%
Explanation:
Question 18:
Let's use "B" to represent the dominant allele of "light blue skin", and
"b" for recessive "light green skin".
Squidward => BB - light blue skin
Squidward's bride => bb - light green skin
When they cross, they will have the following offsprings:
(BB) × (bb) - Parent
(Bb) (Bb) (Bb) (Bb) - Offspring
All the offspring would be light green skin. The dominant allele of light green skin will express itself over the recessive allele.
Therefore, the chances of Squidward and his bride having light green skin is 0%
Question 19:
Squidward's son => Bb - light blue skin
Squidward's son's bride => Bb - light blue skin
(Bb) × (Bb) - parent
(BB) (Bb) (Bb) (bb) - offspring
They will have the following offspring:
BB and Bb - light blue - 75%
bb - light green - 25%
Chance of having offspring with light green skin is 25%
Q 20.17: In IR spectroscopy, a conjugated ketone will produce a C=O signal at a ___________________ wavenumber, compared with a non-conjugated ketone of similar structure.
Answer:
See explanation
Explanation:
Infrared spectroscopy is concerned with transitions between vibrational energy levels. Each infrared active vibration leads to a change in dipole moment.
A ketone compound contains the -C=O group whose signal normally occurs at about 1710 cm-1.
A conjugated ketone is one in which the -C=O group is attached to the -C=C group. This leads to delocalization and reduces the electron density of the C=O double bond, which weakens this bond hence lowering the stretching frequency of the -C=O bond from 1710 to about 1680cm-1.
Fluorine gas reacts with aqueous iron (II) iodine to produce iron (II) fluoride and iodine liquid What is the balanced chemical equation for this reaction?
Answer:
F₂ (g) + FeI₂ (aq) → FeF₂ (aq) + I₂ (l)
Explanation:
Our reactants are:
F₂ → Fluorine gas, a dyatomic molecule
FeI₂ → Iron (II) iodine
Our products are:
I₂ → Iodine
FeF₂ → Iron (II) fluoride
Then, the reaction is:
F₂ (g) + FeI₂ (aq) → FeF₂ (aq) + I₂ (l)
We see it is completely balanced.
Is the water found in the watershed clean and safe for drinking?
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