Answer:
sodium hared an electron with chlorine
Explanation:
Can someone please explain me how to find charges for transition metals?
Answer:
You can determine the charge of a transition metal by looking at its anion (negatively charged ion) partner. For example, lets say you are given AuCl, and you are asked to find the charge of Au, which would be the transition metal in this case.
this what you want
Help Me Guys I Need This Now
Answer:
Answers below!
Explanation:
11. F
12. T
13. T
14. F
15. T
16. T
17. F
18. F
19. T
20. F
21. PC
22. CC
23. PC
24. CC
25. CC
Answer:
Sorry I'm not sure on questions 11-20 but I thought I'd answer a few since you need the answers.
21. PC
22. CC
23. PC
24. CC
25. CC
Explanation:
21 is a PC because the pencil is not changing it's form. 22 is a CC because when you're frying an egg the egg goes through a chemical change and changes form. 23 is a PC because the paper isn't being chemically changed. 24 is a CC because the ingredients in the cake and the cake itself is going through a chemical change. 25 is a CC because anything with fire is a chemical change, it is forming a new substance, and it's producing heat.
HELP FAST!! Two carbon atoms (Group 14) bond with two hydrogen atoms (Group 1) to form acetylene (C2H2). How would each carbon
atom in acetylene bond? (1 point)
Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon
atom
Each carbon atom would share one pair of electrons with the other carbon atom and three pairs with each
hydrogen atom
Each carbon atom would share one pair of electrons with the other carbon atom and two pairs with each
hydrogen atom
Each carbon atom would share one pair of electrons with hydrogen and one pair with the other carbon
atom
Answer: C
Explanation: Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom.
Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom Hence option A is correct.
What are electrons?Electrons are defined as a subatomic particle with a negative charge that makes up the nucleus of an atom along with protons and neutrons. Gravitation, electromagnetic interactions, weak interactions, electricity, magnetism, chemistry, and thermal conductivity are just a few of the physical processes that depend on electrons.
An atom of carbon has four electrons. It needs four electrons to become stable because that is its outermost shell. Three pairs of electrons are covalently bound between two carbon atoms to form acetylene, and the final pair is covalently joined to two hydrogen atoms.
Thus, each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom Hence option A is correct.
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How many grams is 9.67 x 10 to the power of 22 atoms of aluminum
Answer:
Notice that the value 12.01 grams of natural carbon is the same as the atomic mass value (12.01 amu). It also tells us that 20.34 grams of aluminum contains exactly 6.022 x 1023 atoms of aluminum.
Explanation:
Mole measure the number of elementary entities of a given substance that are present in a given sample. There are 4.16gram of aluminum in9.67 x 10²²atoms of aluminum.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. Mole is inversely proportional to avogadro number.
Given number of atoms= 9.67 x 10²²atoms
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
Substituting the values
mole=9.67 x 10²²÷ 6.022×10²³
mole = 0.16moleof Aluminum
mass of aluminum= 0.16moleof sodium×26g/mol
mass of aluminum =4.16gram
Therefore, there are 4.16gram of aluminum in 9.67 x 10²²atoms of aluminum.
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what reagent is used to detect the presence of starch?
Answer:iodine solution
Explanation: it is because in the presece of starch iodine will turn blue/black
What evidence exists for a more recent increase in greenhouse gas concentrations in the atmosphere
Answer:
-data collected from Mauna Loa shows an increase in CO2 by 20% in the last 40 years
-ice core data shows links between CO2 and temperature, with a recent increase in both
-data from ice cores and other proxies show increases in CO2, CH4, and N2O since the Industrial Revolution
Which body systems are responsible to transport materials around and out of the body?
All that are with it not only one, lol
The circulatory system is the body's transport system. It is made up of a group of organs that transport blood throughout the body. The heart pumps the blood and the arteries and veins transport it.
A flask holds a mixture of equal moles of oxygen, nitrogen, and argon gases. The total mass of the gas mixture is 149 g. What is the density of this gas mixture at 725 K and 6.13 atm?
The density of this gas mixture at 725 K and 6.13 atm is 21.68g/L.
How do we calculate density?Density of the gas will be calculated by dividing the mass of gas by their volume.
For this first we have to calculate the volume of gas by using the ideal gas equation as:
PV = nRT, where
P = pressure = 6.13 atm
V = volume = to find?
R = universal gas constant = 0.08206 L.atm / mol.K
T = temperature = 725K
n is the moles of gas and it is mention that oxygen, nitrogen and argon have same moles and we let it be x, moles of this would be calculated from 149g as:
3x = 149 / (14+16+40) = 2.12
x = 0.709 moles
On putting all these values on the ideal gas equation, we get the value of V as:
V = (0.709)(0.082)(725) / 6.13 = 6.87 L
Now we consider the value to calculate the density as:
Density = 149 / 6.87 = 21.68g/L
Hence, the required density of mixture is 21.68g/L.
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D
more than 80 s.
2.
A student carried out 2 experiments to investigate the rate at which gas was given
off when indigestion tablets were added to dilute hydrochloric acid.
She used her results to draw curves on a graph.
syringe
Experiment1
volume
of gas
(cm)
Experiment 2
tablet
50 cm acid
Experiment
Time/seconds
Experiment 2 could have been carried out
A
B
at a lower temperature
using more concentrated hydrochloric acid
using half an indigestion tablet
using a crushed tablet.
с
Use the redox reactions to answer the question.
Zn + 2H+ → Zn2+ + H2
2Al + 3Cu2+ → 2Al3+ + 3Cu
Which elements are oxidized? (1 point)
hydrogen (H) and aluminum (Al)
hydrogen (H) and copper (Cu)
zinc (Zn) and aluminum (Al)
zinc (Zn) and copper (Cu)
Answer: zinc(Zn) and aluminum (AI)
Explanation:
I took the test :)
In this redox reaction Zn + 2H+ → Zn2+ + H2, 2Al + 3Cu2+ → 2Al3+ + 3Cu
zinc ( Zn ) and aluminum ( Al ) are oxidized.
What is redox reaction ?Redox reactions include a change in the oxidation state of the substrate. Similar to how reduction is the acquisition of electrons while oxidation is the loss of electrons or an increase in the oxidation state.
The combined processes of oxidation and reduction are known as redox reactions due to their complimentary nature. The oxidizing agent is the reactant that causes the oxidation, while the reducing agent itself reduces this reagent.
An atomic exchange of electrons between atoms causes a chemical reaction known as a redox reaction. The primary distinction between oxidation and reduction is that the former involves an increase in an atom's oxidation status while the latter involves a decrease in its oxidation state.
Thus, option C is correct.
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How is the number of electrons in an element determined?
The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.
Answer:
By finding the number of protons
Explanation:
Keep in mind when trying to find the number of electrons of a element, the number of electrons also equals the number of protons. In order to find the number of protons in the element simply find it's atomic number.
Example:
Find the number of electrons in the element iron.
Fe (Iron)
Fe's atomic number is 26
Protons/electrons = 26
Hope this helps.
how many covalent bonds are usually formed by the element n?
Answer:
3
Explanation:
N stands for element Nitrogen (Refer to the attachment for Lewis dot structure)
choose any bases that will selectively deprotonate the above acid, that is, any bases that will favor the formation of products.
In order to deprotonate an acid, we must remove protons in order to achieve a more stable conjugate base. For this example, we can use the relationship between carboxylic acid and hydroxide.
Deprotonation is the removal of a proton from a specific type of acid in reaction to its coming into contact with a strong base. The compound formed from this reaction is known as the conjugate base of that acid. The opposite process is also possible and is when a proton is added to a special kind of base. This is a process referred to as protonation, which forms the conjugate acid of that base.
For the example we have chosen to give, the conjugate base is the carboxylate salt. This would be the compound formed by the deprotonated carboxylic acid. The base in question was strong enough to deprotonate the acid due to the greater stability offered as a conjugated base.
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A shampoo
B. chocolate chip cookie dough
C. tap water
D. air
2. Which of the following is a solution?
A concrete
B. sand and water
C. orange juice
D. apple juice
Answer: B) sand and water
Explanation:
because when you mix sand and water the sand does not dissolve in the water
How many moles are 60.22*10^23 atoms of sodium?
Moles = Number of Atoms ÷ Avogadro's Number
= (60.22 × 10²³ atoms) ÷ (6.022 × 10²³ atoms/moles)
= 10 moles
∴ there are 10 MOLES of Sodium.in liquids, the attractive intermolecular forces are ________.
Answer:
the attractive forces between two molecules and strong enough to hold molecules relatively together
what is the differences between energy conversion and energy transfer??
help pls
Answer:
Energy transfer is the movement of energy from one location to another.
Explanation:
Energy transfer is the movement of energy from one location to another. Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.
An ionic compound consists of a ___________ and a _____________.
Answer:
Ions and charged particles
Explanation:
An ionic compound consists of a ions and a charged particles
What two particles compose the nucleus of an atom? ___________________ and ______________________.
Answer:
protons and neutrons
Explanation:
how many days does it take to thaw a turkey in the fridge
Answer:
Each 24 hours for every 5 pounds of turkey. So a 15-pound bird will take around 3 days to thaw completely.
Explanation:
Helpp me Guys I Need This Now:)
ok im here to help with your 5th grade homework
how do you solve this ?
1mol of K contains 6.022×10^23atoms
0.0246 mol contains:-
[tex]\\ \sf\longmapsto 0.0246\times Avagadro\:no[/tex]
[tex]\\ \sf\longmapsto 0.0246\times 6.022\times 10^{23}[/tex]
[tex]\\ \sf\longmapsto 1.37302\times 10^{22}[/tex]
in a circuit, the switch
A) opens and closes the circuit
B) starts and stops the electrons
Predict the type of bonding in each of the following substances. Provide their chemical
names and predict which ones will conduct electricity.
a. MgCh
b. O2
c. AgOH
d. Pt
i need help solving this
3) 1.05 is the correct answer
Explanation:9.7 - 8.65 = 1.05
Answer:
1.05
Explanation:
8.65-9.7=-1.05cm
the element to atomic 35 belong to_____ A, s-block B,P-block c, d-block D,f-block
Answer:
B
Explanation:
p block bc its last orbit is 4p5
Answer:
Explanation:
P. block
when hydrogen is fused into helium, energy is released from
How can you increase the boiling point of water?
A. By increasing the volume of the water
B. By increasing the air pressure above the water
C. By lowering the air temperature above the water
ОО
D. By lowering the pressure of the water
Answer: B
Explanation:
You can increase the pressure above the boiling water.
The boiling point of a liquid varies depending upon the surrounding environmental pressure. A liquid in a partial vacuum has a lower boiling point than when that liquid is at atmospheric pressure. A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure.
Is fire a plasma or a gas?
Answer:
Most flames are made of hot gas, but some burn so hot they become plasma. The nature of a flame depends on what is being burnt. A candle flame will primarily be a mixture of hot gases (air and vaporised paraffin wax). The oxygen in the air reacts with the paraffin to produce heat, light and carbon dioxide.
Answer:
Fire is considered a plasma. Most people get fire confused with gas.
I hope this helped at all.
Bismuth-210 has a half life of 5.0 days if you had a sample of 60.00g of Bismuth-210 how much would be left after 15 days? (Show Your Work)
Answer:
7.5 gm left
Explanation:
Bismuth-210 has a half life of 5 days
15 days is 15/5 = 3 half lives
since half the amount is left in 5 days or 1 half life
(1/2) x (1/2) x (1/2) the staring amount would be left in
3 half lives. so 1/8 is left
(1/8) x 60.0 = 7.5 gm left
