Answer: it’s climate
Explanation:
desperate, please help ASAP and check over
In the reaction 2KCIO3 → 2KCI+ 302 , oxygen is a
A. reactant
B. product
C. coefficient
D. subscript
Answer:
coefficient
Explanation:
It a part of the equation
True or False: All organisms stay in the same habitat for their entire lives.
Answer: False
Explanation: Some animals have to move to different places maybe because their habitat is destroyed or they aren’t comfortable with it.
Which one of the following produces hydrogen ions in a water solution?
A. Acids
B. Bases
C. Hydroxide ions
D. Chemical compounds
Answer:
A. Acids
Explanation:
An acid is an ionic compound that produces positive hydrogen ions when dissolved in water. Acids taste sour and turn blue litmus paper red. A base is an ionic compound that produces negative hydroxide ions when dissolved in water.
Which type of reaction to alkenes generally undergo?
Answer:
Two types of reaction
Explanation:
Alkanes undergo only substitution reactions but alkenes and alkynes undergo both substitution and addition reactions
Which organ produces the female hormone estrogen
Answer:
it is B Ovary.
Explanation:
Answer:
answer b
Explanation:
it says it above
why are some properties of water different than those of the reactants gases
Answer:
The difference in the properties of water can be attributed to physical changes to the hydrogen and oxygen atoms on a subatomic level. The properties of the gases are combined to give water its properties. When substances chemically combine, products with completely different properties form.
Answer:
They are composed of different atoms
Explanation:
The guy above me said it better :|
With the help of mole ratio one can predict:
ck12 = both A & B
Moles of product formed from a certain number of moles of reactant
Moles of reactant required for a certain number of moles of product
Answer:
D. Both A and B
Explanation:
got it right
How can air pollution affect plants?
A. Air pollution can block sunlight from reaching plants.
B. Air pollution can affect the water plants need.
C. Air pollution absorbs carbon dioxide.
D. Air pollution can change normal temperatures of a region.
Answer:
C. air pollution absorbs carbon dioxide
Explanation:
Carbon dioxide's role in the greenhouse effect is a major contributor to air pollution. Radiation and heat emanating from the earth's surface need to be released out into the atmosphere. But because carbon dioxide levels are so high, there is an ozone effect on the ground level.
Match the following aqueous solutions with the appropriate letter.
1. 0.19 m AgNO3
2. 0.17 m CrSO4
3. 0.13 m Mn(NO3)2
4. 0.31 m Sucrose(nonelectrolyte)
a. Highest boiling point
b. Second highest boiling point
c. Third highest boiling point
d. Lowest boiling point
Answer:
Explanation:
When a salt is dissolved , it increases the boiling point . Increase in boiling point depends upon number of ions . So it is a colligative property .
.19 m AgNO₃ . Each molecule will ionize into two ions . So effective molar concentration is 0.19 x 2 = .38 m
0.17 m CrSO4.Each molecule will ionize into two ions . So effective molar concentration is 0.17 x 2 = .34 m
0.13 m Mn(NO₃)₂. Each molecule will ionize into three ions . So effective molar concentration is 0.13 x 3 = .39 m
0.31 m Sucrose(nonelectrolyte). Molecules will not ionize . So effective molar concentration is 0.31 x 1 = .31 m
Higher the molar concentration , greater the depression in boiling point .
So lowest boiling point is 0.13 m Mn(NO₃)₂.
second highest boiling point is 0.19 m AgNO3.
Third lowest boiling point is 0.17 m CrSO4
Highest boiling point or lowest depression 0.31 m Sucrose.
a . 4
b . 1
c . 2
d . 3
ррррно да
Level 1
12
11
10
B
2
IA А
3
С C
8.
7.
1 D
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А д-
а.
Answer:
tic
Explanation:
because it is my answer okay
What volume in liters of fluorine gas is needed to form 999 L of sulfur hexafluoride gas if the following reaction takes place at 2.00 atm and 273.15 K: S(s) + 3F₂(g) → SF₆ (g)
Answer: A volume of 2997 liters of fluorine gas is needed to form 999 L of sulfur hexafluoride gas if the given reaction takes place at 2.00 atm and 273.15 K.
Explanation:
The given reaction is as follows.
[tex]S(s) + 3F_{2}(g) \rightarrow SF_{6}(g)[/tex]
This show that 3 moles of fluorine is reacting to give 1 moles of sulfur hexafluoride.
According to the ideal gas formula,
PV = nRT
This means that volume of a gas is directly proportional to the number of moles. Hence, volume of fluorine required is calculated as follows.
[tex]3 \times 999 L\\= 2997 L[/tex]
Thus, we can conclude that a volume of 2997 liters of fluorine gas is needed to form 999 L of sulfur hexafluoride gas if the given reaction takes place at 2.00 atm and 273.15 K.
A student made a sketch of a potential energy diagram to represent a reaction with a -^H
Explain, using complete sentences, why the diagram made by the student is correct or incorrect. Be sure to also explain
what the values of X and Y represent.
Answer: It’s correct because it’s showing an exothermic reaction. x is the reactants and y is the products.
Explanation: -ΔH means the reaction is exothermic and releasing heat. This lowers the potential energy.
Answer:
answer above is correct
Explanation:
How many grams of potassium carbonate are needed to make 200 mL of a 2.5 M solution?
If I want to use 78 grams of isoproponol (C3H8O) in a reaction, how many mL do I need of a 3.4 M solution?
I have two solutions. In the first solution, 1.0 moles of sodium chloride is dissolved to make 1.0 liters of solution. In the second one, 1.0 moles of sodium chloride is added to 1.0 liters of water. Is the molarity of each solution the same? Explain your answer
Please help, thanks!
Answer:
The molecular formula for Potassium Carbonate is K2CO3. The SI base unit for amount of substance is the mole. 1 grams Potassium Carbonate is equal to 0.0072356020563581 mole. Note that rounding errors may occur, so always check the results.
Explanation:
The molecular formula for Potassium Carbonate is K2CO3. The SI base unit for amount of substance is the mole. 1 grams Potassium Carbonate is equal to 0.0072356020563581 mole.
If a material conducts heat easily, it is a good__________________. The answer has to be 18 letters long please type in the right answer please and tank you
Please answer if you know it I need this today this question is only for people who have done it or they know the answer. Please answer this I need to know the answer please and thank you have a good day! It would be amazing if I got an A+ on my final test! PLEASE HELP AND PLEASE ANSWER IF YOU KNOW THE ANSWER PLEASE HELP!!!!!!!!!!
AND DO NOT PUT IT ON NO FILE OR NOTHING PLEASE AND I MEAN IT PLEASE DON'T I CAN'T OPEN IT PLEASE DON'T PUT ANSWER ON FLIE PLEASE!!!!!!!!!!!!!!!
Answer:
Thermal Conductor
Explanation:
What is the Chemical formula for K and P
Answer:
Potassium phosphide (K3P)
Name the functional group in the
following molecule:
CH3CH2OCH2CH3
A ester
B. acid anhydride
C ketone
D. ether
Answer:
d
Explanation:
i just did it
The functional group in the following molecule CH₃CH₂OCH₂CH₃ is ether.
What is functional group?Functional group is defined as a substituent or group of atoms or an atom which causes chemical reactions.Each functional group will react similarly regardless to the parent carbon chain to which it is attached.This helps in prediction of chemical reactions.
The reactivity of functional group can be enhanced by making modifications in the functional group .Atoms present in functional groups are linked to each other by means of covalent bonds.They are named along with organic compounds according to IUPAC nomenclature.
Functional group inter conversion is also possible by retro -synthesis.In some cases , functional groups can be charged molecules.
Learn more about functional group,here:
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I need help with the question please help
Answer:
Explanation:
u are right
Answer:
An icicle
Explanation:
An icicle is heavier and has more mass making it fall quicker then a smaller and lighter item like a snow flake.
what is a recessive allele in a genotype is represented by pleaseee helpp
In alkanes with three or fewer carbon atoms,
a. the chains can be straight or branched.
b. usually one but sometimes more than one molecular structure is possible.
c. structural isomers exist.
d. only one molecular structure is possible.
Answer: Only one molecular structure is possible.
what class is sodiumtrioxocarbonate(IV) strong or weak base and why?
Answer:
Strong Base
Explanation:
sodiumtrioxocarbonate(IV) Na2CO3 exists in various forms such as; an anhydrous form or in a crystalline form. Usually, the manufacturing process of sodiumtrioxocarbonate(IV) Na2CO3 is known as the Solvay process.
Now, upon reaction, Na2CO3 reacts to yield CO⁻₃. That appears to be a conjugate base of a weak acid. Thus, the occurrence of the removal of H⁺ resultt into Carbonic acid, i.e. a Strong Base.
250 mL of water is collected during a combustion reaction. The temperature in the
room is 23 °C and the pressure is 105 kPa. How many moles of water was collected?
Answer:
0.011 moles
Explanation:
Applying,
PV = nRT.................... Equation 1
Where P = Pressure, V = Volume, n = number of moles, R = Molar gas constant, T = Temperature.
Make n the subject of the equation
n = PV/RT.................. Equation 2
From the question,
Given: P = 105 kPa = (105×0.00986923) = 1.036 atm, V = 250 mL = 0.25 L, T = 23 °C = (273+23) = 296 °C
Constant: R = 0.082 atm.dm³/K.mol
Substitute these values into equation 2
n = (1.036×0.25)/(0.082×296)
n = 0.011 moles
How many grams of NaCI are dissolved in a 500.0 mL of a 0.04M solution of NaCI?
A: 0.05 g
B: 1.17 g
C: 1.46 g
D: 2.92 g
Answer:
B 1.17
Explanation:
There is .02 mols of nacl in a .4M solution
so you multiply by the molar weight of NaCl (58.44)
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Answer: Cornea
Explanation: The cornea is the only part of a human body that has no blood supply as it gets oxygen directly through the air.
There are ____ neutrons, ___ protons, and ____ electrons in 238U+5
Answer:
Explanation:
The atomic number of uranium (see periodic table) is 92, and the mass number of the isotope is given as 238. Therefore, it has 92 protons, 92 electrons, and 238 — 92 : 146 neutrons
Uranium has an atomic number of 92. There are 146 neutrons, 92 protons, and 92 electrons in 238U+5. The number of neutrons can vary from 141 to 146.
What is uranium ?Chemical element uranium has the atomic number 92 and the letter U. It is an actinide metal in the periodic table's silvery-gray series. There are 92 protons and 92 electrons in an atom of uranium, of which 6 are valence electrons.
Since uranium has an atomic number of 92, its atomic structure consists of 92 protons and 92 electrons. The nucleus of U-238 contains 146 neutrons, but this number can range from 141 to 146.
With 92 protons and 146 neutrons, Uranium-238 is the heaviest element in nature. The overall mass and charge of the nucleus are 238 nucleons, or +92.
Thus, Uranium has an atomic number of 92. There are 146 neutrons, 92 protons, and 92 electrons in 238U+5.
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hydrocarbon.
4-ethyl-3-methyloctane
Answer:
The answer to your question is given below.
Explanation:
From the question given above, we obtained the following:
Name of compound =>
4–ethyl–3–methyloctane
Structure of compound =>?
To successfully draw the structure of the compound given above, we must note the following:
1. The parent name of the compound is octane. This implies that the longest continuous carbon chain is 8.
2. The compound contains only single bond since it a member of the alkane family.
3. Ethyl (–CH₂CH₃) and methyl (–CH₃) are substituent group attached to the compound.
4. Ethyl (–CH₂CH₃) is located carbon 4 while methyl (–CH₃) is located at carbon 3.
With the above information in mind, we can successfully draw the structure of the compound.
Please see attached photo for the structure of the compound.
If a material conducts heat easily, it is a good__________________
Please answer if you know it I need this today this question is only for people who have done it or they know the answer. Please answer this I need to know the answer please and thank you have a good day! It would be amazing if I got an A+ on my final test! PLEASE HELP AND PLEASE ANSWER IF YOU KNOW THE ANSWER PLEASE HELP!!!!!!!!!!
Question in the photo. PLEASE HELP!!!
Answer:
Your answer is correct
Explanation:
* Oxidation no. Of S in So2=+4
* Oxidation no. Of S in H2SO4=+6
Therfore S was oxidized
* Oxidation no. Of N in HNO3=+5
* Oxidation no. Of N in NO=+2
Therfore N was reduced
10 points of bullying
Answer: Bullying is not good!
What is the relationship between temperature and volume?
Answer:
Charles's law states that the volume of a given amount of gas is directly proportional to its temperature on the kelvin scale when the pressure is held constant
The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles's law). The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle's law)
Explanation:
~Hope this helps