Answer:
"Acids produce hydrogen ions, H+, in water. Bases produce hydroxide ions, OH-."
Explanation:
Answer:
Explanation:
Acids and bases release what kind of ions in water?
Acids release hydrogen ions, bases release hydroxide ions.
the cation H+ of acids consisting of a hydrogen atom whose electron has been transferred to the anion of the acid'
the monovalent anion OH− consisting of one atom of hydrogen and one of oxygen
— called also hydroxide ion
Please count compound list each element and the amount of each and then figure out the total of the atoms
NEED ANSWER ASAP
Answer:
Explanation:
H = 9 You get that from the 3 in front of the phosphoric acid and the 3 behind it.
P = 3 The three in front of the phosphoric acid affects everything.
O4 = 12 The three multiplies by the 4 to get 12
Total number of atoms = 9 + 3 + 12 = 23
It's inorganic. It has no carbons and nothing else you could argue that it makes an organic compound.
An atom of sodium-23 (Na-23) has a net charge of +1. Identify the number of protons, neutrons, and electrons in the atom.
Answer:
Explanation: Sodium has an atomic number of 11, so it has 11 protons. The atomic mass is 23, so there are 23 − 11 = 12 neutrons. The charge is +1, so there is 1 more proton than electrons, so there are 10 electrons
Explanation:
What allowed Mendeleev to make predictions of undiscovered elements
Answer:
he predicted the properties from known elements above and belws the unknown in the same group
Explanation:
What allowed Mendeleev to make predictions of undiscovered elements
He realized that an element on this table with one known element above it and one known element below it had to have properties between the two known elements
How did Mendeleev predict gallium and germanium?
Based on gaps in the periodic table Mendeleev deduced that in these gaps belonged elements yet to be discovered. Based on other elements below and above in the same group he predicted the existence of eka-aluminum, eka-boron, and eka-silicon, later to be named gallium (Ga), scandium (Sc), and germanium (Ge).
Scientists classify clouds by their_ and their weather patterns
Answer:
Clouds are classified according to their height above and appearance (texture) from the ground.
Explanation:
The following cloud roots and translations summarize the components of this classification system: 1) Cirro-: curl of hair, high; 2) Alto-: mid; 3) Strato-: layer; 4) Nimbo-: rain, precipitation; and 5) Cumulo-: heap. Hope this helps :)
Can someone plz help and fast don't write a whole paragraph just the facts so i can write it myself because i have no clue what to do
What concentration of NaOH will you place into the leaf jar to absorb the carbon dioxide?
Concentration of NaOH will you place into the leaf jar to absorb the carbon dioxide at 0.75 M concentration.
What is concentration ?Concentration is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, molar concentration, number concentration, and volume concentration are four different categories of mathematical description.
The amount of solute that has dissolved in a specific amount of solvent or solution is measured as solution concentration. A concentrated solution is one that has a significant amount of dissolved solute in it. A diluted solution is one that has a little amount of dissolved solute in it.
Concentration is the ratio of the volume of the solution ( V ) to the mass of the solute ( m ) that is dissolved in it. C = m / V. Molality, mole fraction, and molarity are the three methods for calculating the concentration of a solution.
Molarity, molality, mass percentage, parts per thousand, parts per million, and parts per billion are examples of quantitative units of concentration.
Thus, option C is correct.
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How do you solve this ?
Answer:
6. 66.674
Explanation:
You are given moles of H20 and the question is asking you to find the mass. You take the amount of moles given, 3.70 mol H2O and multiply it by the molar mass of water to go from moles to grams. The molar mass is the mass of 1 mole of that atom. So 1 mole of H2O is 18.02 g.
3.70 moles H2O x 18.02g = 66.674 g
Define photon as a unit of radiation energy.
Answer:
A photon is the smallest discrete amount or quantum of electromagnetic radiation. It is the basic unit of all light. As per Einstein's light quantum theory, photons have energy equal to their oscillation frequency times Planck's constant.
Explanation:
A photon is defined as the the smallest discrete amount or quantum of electromagnetic radiation. It can also be called as energy packets.
Photon is considered to be the basic unit of all light. As per Einstein's quantum theory, photons have energy equal to their oscillation frequency times Planck's constant.
The energy of photon equal to the difference in energy between the atom's excited state and its final state.
The photon energy of the emitted photon is equal to the energy difference between the two states. There are many possible electron transitions for each atom, and each transition has a specific energy difference.
When an atom in an excited state emits a photon of radiation, the energy of the photon is equal to the difference in energy between the atom's excited state and its final state.
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3.00 moles of gas are pumped into a 1.00L rigid container with a pressure of 1.98 atm. The gas is released from the container until the pressure is 0.78 atm, how many moles of gas remain in the container?
Answer:
1.18 moles of gas
Explanation:
3.00 moles of gas are pumped into a 1.00L rigid container with a pressure of 1.98 atm. The gas is released from the container until the pressure is 0.78 atm, how many moles of gas remain in the container?
for the sealed rigid container, the pressure is directly proportional to the amount of gas
3.00moles/1.98 atm = ? moles/0.78 atm
? = 3.00 X 0.78/1.98 =1.18 moles of gas
Question 1 (1 point)
Why can a solution be classified as a mixture?
Question 1 options:
Both are made up of two substances that are not chemically combined.
Both are always homogeneous.
It is made up of only one substance.
Both are made up of two substances that are chemically combined.
Question 2 (1 point)
Which choice is an element?
Question 2 options:
air (N2 mixed with O2 , and CO2 )
oxygen (O2 )
sodium chloride (NaCl)
water (H2O )
Question 3 (1 point)
Which choice is a compound?
Question 3 options:
air (N2, O2 mixed with CO2)
carbon (C)
carbon dioxide (CO2 )
oxygen (O2)
Question 4 (1 point)
Which choice is a mixture?
Question 4 options:
carbon dioxide (CO2)
oxygen (O2)
air (N2 mixed with O2 and CO2)
carbon (C)
Question 5 (1 point)
How is a pure substance different from a mixture?
Question 5 options:
A pure substance is heterogeneous.
Pure substances cannot be separated by physical means.
A mixture is made of one substance.
Mixtures cannot be separated by physical means.
Please help!! You get 20 points!
Answer:
Both are made up of two substances that are not chemically combined. oxygen (O2) carbon dioxide (CO2 ) air (N2 mixed with O2 and CO2) Pure substances cannot be separated by physical means.Explanation:
_____ are used as preservatives for ophthalmic solutions and cosmetics. Triclosan Betadine Quaternary ammonium compounds Merthiolate Formalin
It should be noted that merthiolate are used for skin antiseptics, vaccines, preservatives in cosmetics and ophthalmic solutions.
Merthiolate is simply a mercury-containing substance that can be used as a germ-killer and preservative in several products.
It should be noted that merthiolate poisoning occurs when large amounts of merthiolate come in contact with the skin of a person. Merthiolate is also used in preventing skin infection and cleaning wounds.
In conclusion, the correct option is merthiolate.
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Which substance elutes first in fractional distillation.
Answer:
distill, the lowest-boiling compond is first
11. Rutherford fired positively charged alpha particles at gold foil and concluded that most of the mass of an
atom was
a. evenly spread throughout the atom.
b. in rings around the atom
C. in the electrons.
d concentrated in the nucleus.
Answer: D, concentrated in the nucleus.
Explanation: He concluded that most of the mass of the mass of the atom is concentrated at a single place at the centre of atom. He named this place as the nucleus.
Answer:
it's d (concentrated in the nucleus)
Explanation:
Help Asap for Brainlist
Answer:
it is true
Explanation:
hope this helps (please mark me brainlist if you can)
Answer:
It’s false because noble gases are only in the p block and this notation finishes in the s block
Explanation:
I need help ASAP!!
Nitrogen and carbon can form
bonds in which six electrons (three pairs) are shared.
hexadecimal
o single covalent
triple covalent
ionic
Answer:
Triple covalent
Explanation:
If you have a 4.6 L of gas in a piston at a pressure of 1.2 atm and compress 2p the gas until its volume is 2.6 L, what will the new pressure inside the piston be?
Answer:
2.12atm
Explanation:
Boyle's Law: P1V1 = P2V2
Manipulate to solve for unknown: P2 = P1V1/V2
Substitute values: P2=(1.2atm)(4.6L)/2.6L
P2 = 2.1230769atm
Round to 3 sig figs to get 2.12atm
Which set of the electronic structures are only found in metals?
A
2, 1
2, 8, 1
2, 8, 8, 1
B
2,5
2,6
2, 7
C 2,7
2,8,7
2, 8, 18, 7
D
2,8,3
2.8,4
2, 8, 5
Answer:
A... According to the periodic table, elements with one electron at the outermost shell or orbital are classified as alkali METALS
which of the following can be used as chopping board because it is hard?
A. Glass
B. Rubber
C. Wood
D. Copper
What is a catalytic fix?
Answer:
Explanation: Catalysis is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst. Catalysts are not consumed in the reaction and remain unchanged after it.
anyone wanna help me plese
An atom of lithium (Li) and an atom of fluorine (F).
What do you notice about the number of valence electrons in each?
How could these two atoms make each other “happy”?:
Would they still be neutral?:
Answer:
Lithium gives up its one electron to make both atoms happy. So the fluorine atom has eight electrons, and a filled outer shell.
pls help me tell me how to do this question. i only need the answer for the first 2.pls
Answer:
Explanation:
55 and 918
An acid is used to bring the pH of a solution from pH 9 to pH 6. How many times more acidic is the final solution than the initial solution
Answer:
The final solution is 1.5 times more acidic than the initial solution
Explanation:
*
Si atoms have
valence electrons.
2
4
6
8
Answer: 4
Explanation:
difference between isopropyl alcohol and denatured alcohol
Two seventh grade students are riding in a car and listening to music on the radio.
How would the students increase the amplitude of the sound waves of the music?
Question 2 options:
Turn the volume up to create more energy
Turn the volume down to create less energy
Turn the volume up for a higher frequency
Turn the volume down for a slower frequency
Answer:
A. Turn the volume up for more energy.
Explanation:
The reason why this is the correct answer is because the louder the music gets the more energy it puts out therefore the answer is option A.
The students increase the amplitude of the sound waves of the music turn the volume up to create more energy. Hence option A is correct.
What is energy?Energy is defined as a quantitative quality that is conveyed to a person or a physical system and is discernible in the way work is done as well as in the way heat and light are produced. A conserved quantity is energy. According to the law of conservation of energy, energy can change its form but cannot be created or destroyed.
Sound waves are defined as the pattern of disruption brought on by energy's passage through a medium when sound travels away from its source. Pressure waves are produced by the vibration of objects and are known as sound waves. A sound source, such as the vibrating speaker's diaphragm in a stereo, produces the sound waves.
Thus, the students increase the amplitude of the sound waves of the music turn the volume up to create more energy. Hence option A is correct.
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I need help plsss
. Why is carbon able to bond with atoms of other elements in many different ways?
Because it has four valence electrons.
Because it has six total protons.
Because it has four total electrons.
Because it has six valence electrons.
Answer:
Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules.
Given what you know about cyanide poisoning, do you think that giving a person oxygen would be an effective treatment
Answer:
Oxygen will be given to help restore oxygen to your cells, and to prevent more damage. Cyanide antidotes will be used to bind with the cyanide so your body can remove it through your urine.
Explanation:
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sample of gas initially occupies 3.0 cc at a pressure of 47.8 mmHg. The pressure is increased to 746 mmHg. What is the new volume
The new (final) volume of the sample of gas is equal to 0.1922 [tex]cm^3[/tex].
Given the following data:
Initial volume = 3.0 [tex]cm^3[/tex]Final pressure = 746 mmHg.Initial pressure = 47.8 mmHg.To determine the new (final) volume of the sample of gas, we would apply Boyle's law:
Mathematically, Boyle's law is given by the formula;
[tex]PV = k\\\\P_1V_1 = P_2V_2[/tex]
Where;
[tex]P_1[/tex] is the initial pressure.[tex]P_2[/tex] is the final pressure.[tex]V_1[/tex] is the initial volume.[tex]V_2[/tex] is the new (final) volume.Making [tex]V_2[/tex] the subject of formula, we have:
[tex]V_2 =\frac{P_1V_1}{P_2}[/tex]
Substituting the given parameters into the formula, we have;
[tex]V_2 = \frac{47.8 \times 3}{746} \\\\V_2 = \frac{143.4}{746}[/tex]
New volume = 0.1922 [tex]cm^3[/tex]
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Hey can someone solve this question ? it's due due tomorrow actually ~
Thanks for Answering ~
Using Boyle's law
[tex]\\ \sf\longmapsto P\propto \dfrac{1}{V}[/tex]
[tex]\\ \sf\longmapsto \dfrac{P_1}{P_2}=\dfrac{V_2}{V_1}[/tex]
[tex]\\ \sf\longmapsto \dfrac{1}{P_2}=\dfrac{600}{500}[/tex]
[tex]\\ \sf\longmapsto P_2=\dfrac{5}{6}[/tex]
[tex]\\ \sf\longmapsto P_2=633.3mmHg[/tex]
H=760-633.3=126.67mBased on the information given, it should be noted that the height will be 126.67m.
Solving the heightFrom the information given, the pressure and the volume have been given. Therefore, the height will be calculated thus:
1/P = 600/500
P = 500/600.
P = 633.3mmHg
Therefore, height will be:
= 760 - 633.30
= 126.67
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how are silicate minerals different from nonsilicate minerals
Answer: The main difference between silicate minerals and nonsilicate minerals is that silicate minerals are composed of silicate groups whereas Nonsilicate minerals have no silicate groups.
Explanation:
