Answer:
B will give up two electrons to form bonds.
Explanation:
B has 12 electrons, it means that the electronic configuration of B is; 1s2 2s2 2p6 3s2. The implication of this is that B must be an element of group 2 since it has an outermost electron configuration of ns2.
The elements of group 2 form ionic bonds by loss of two electrons. This implies that B will form bonds by loss of two electrons.
The statement i.e. correct is B will give up two electrons to form bonds.
The following information should be considered:
B has 12 electrons, it means that the electronic configuration of B is; 1s2 2s2 2p6 3s2. It represent that B must be an element of group 2 since it has an outermost electron configuration of ns2. The elements of group 2 form ionic bonds by loss of two electrons. This implies that B will form bonds by loss of two electrons.
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The size of an atom would be described in _______.
Answer:
atomic radius
Explanation:
so radius
Answer:
Explanation:
The average size of an atom is about 100 picometers or one ten-billionth of a meter. Almost all of the mass of an atom is in its nucleus; almost all of the volume of an atom is occupied by electrons. The number of protons (also known as its atomic number) determines the element. Varying the number of neutrons results in isotopes.
Which of the following have the correct pairing of ion charge to the number of protons and electrons that would
deliver that charge for the ion written?
Select ALL that apply.
Select all that apply
А. 0-2: 8 protons and 4 electrons
B. Na+l: 11 protons and 10 electrons
С. N-3.7 protons and 10 electrons
D. Al 3. 13 protons and 16 electrons
Answer:
Explanation:
O-2 means that there are 2 more electrons than protons. This one is incorrect.
Na + 1 is correct. 11 protons and 10 electrons.
N-3 is correct 7 protons and 10 electrons.
AL+3 is incorrect. It goes the other way 13 protons 10 electrons.
Which two of the minerals shown have a metallic luster?
Answer:
A and D
Explanation:
Answer:
A & D
Explanation:
Intermolecular forces do not have any effect on determining the physical properties of
substances such as surface tension and melting point.
True or false
Answer:
False
Explanation:
The physical properties of melting point, boiling point, vapor pressure, evaporation, viscosity, surface tension, and solubility are related to the strength of attractive forces between molecules. These attractive forces are called Intermolecular Forces.
What is the amplitude ?
Answer: The amplitude is a measure of the strength or intensity of the wave
Explanation: when looking at a sound wave, the amplitude will measure the loudness of the sound.
Which is a diatomic molecule?
Na-CI
o=O
H-F
Si-O
which one
what describes a property of all elements
Which is a compound?
A. Orange and black shirts in a drawer
B. An alloy of copper and iron
C. Silicon and carbon in a molecule
D. A copper statue
please help, on a pex ! brainliest and an extra 50 points if right
Explanation:
c Silicon and carbon in a molecule
Help as fast possible I’ll mark you bbrainlist
Answer:
the farther they are the longer there cycle is. closer they are shorter time.
Separate the following gene sequence into codons: TACGTCTTACGCTATGTC
Answer really quick plssss
Answer:
I think it's AUGCAGAAUGCGAUACAG
help help help plsss
Answer:
4.58×10^3
3.72×10^7
Explanation:
3.8×10^2 =380
+ 4.2×10^3=4200
= 4580 = 4.58×10^3
Oxygen is most chemically similar to
Anitrogen
Bsulfur
Cfluorine
Answer:
Nitrogen is the answer
A roller coaster is accelerating at 10m/s² before it comes to an abrupt stop at the end of the ride. The mass of the roller coaster is 900 kg. How much force was exerted on the roller coaster to bring it to a stop?
Answer:
9000 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 900 × 10
We have the final answer as
9000 NHope this helps you
What is a reaction rate? PLEASE HELP
a. measure of the potential energy differences in reactants and products
b. measure of the activation energy needed
c. measure of how fast products are made
d.measure of collisions between molecules
Answer:
c
Explanation:
Reaction rate, in chemistry, the speed at which a chemical reaction proceeds.if you're studying the same thing I am then that would be it
What do the cells do with the things they absorb
Answer:
Use them as nutrients probably
Transcription of the sequence TTA AGC produces which sequence?
AAT UCG
AAT TGC
UUT TCC
AAU UCG
Answer:
AAU UCG
Explanation:
According to the base-pairing rule, the purine bases always pair with the pyrimidine bases. More specifically, Adenine always pairs with Thymine/Uracil while Guanine always pairs with Cytosine.
T - A
T - A
A - U
A - U
G - C
C - G
Hence, the transcription of the sequence TTA AGC will produce AAU UCG.
which group of mamaals has the most mebers
Infraclass: Placentals
Placental mammals are the most diverse group of mammals with about 4000 discovered species.
In sexual reproduction, a genetic mutation can ONLY be passed down to the offspring if it occurs in the sex cells.
True
False
Which of the following statements is FALSE?
H2SO4 + 2 NaOH → Na2SO4 + 2 H2O is a double replacement reaction
2 KClO3 →KCl + 2 O2 is a decomposition reaction.
C6H12 + 9 O2 → 6 H2O + 6 CO2 is a single replacement reaction
CO2 + Na2O → Na2CO3 is a synthesis reaction
Answer: ITS FALSE
ExplaC6H12 + 9 O2 → 6 H2O + 6 CO2 is a single replacement reaction
nation:
Convert 48.5 grams of water to moles of water
Answer:
2.70 mol of water.
Explanation:
divide the given mass by the molar mass of water. 48.5 / 18.016g = 2.70 mol water.
If 150 g of sucrose dissolved in a 1.50 L water what is the molarity of a solution
Answer:
0.2923 molar
Explanation:
M = given mass /(molar mass× volume)
150/342(1.5)
150/513
0.2923M
When water goes from its liquid state to a gas which are being broke
Answer:
Studies have revealed that evaporation—the process by which water changes from a liquid to a gas—from oceans, seas, and other bodies of water (lakes, rivers, streams) provides nearly 90% of the moisture in our atmosphere. Most of the remaining 10% found in the atmosphere is released by plants through transpiration.
Explanation:
Which element has an electron configuration that ends in the fourth energy 1 point
level? *
D
ОО
C
Answer:
here
Explanation:
which is the halogen that is in Period 5? a. iodine (I) b. strontium (Sr) ... 4. Which is a transition element with five d-block electrons in energy level 4? ... Which region contains elements with an electron configuration that ends with p3? a. A b.
Missing: point | Must include: point
What is the speed of a car that has traveled 100 miles in 20 hours?
|
Answer:
5 mph
Explanation:
100 miles, 20 hours (divide by 2)
50 miles, 10 hours (divide by 2)
25 miles, 5 hours (divide by 2)
divide both sides by 5
5 miles, 1 hour
Answer:2
Explanation:
boron phosphite
Formula please help fast please please help me please please help
Answer: The formula for boron phosphite is BP
Explanation:
The answer would be BP
Hope this helped!
identify the element present in the following compound zinc chloride
Answer:
Zinc Chloride: ZnCl2
Molar Mass: 136.315 grams per mole
Density: 2.907 grams per cubic centimetre
Melting Point: 563 K (290oC)
Boiling Point: 1005 K (732oC)
Explanation:
Brainliest please?
Which of these elements is the most chemically reactive?
A.
strontium (Sr)
B.
beryllium (Be)
C.
radium (Ra)
D.
calcium (Ca)
The most chemically reactive element among the listed elements is Radium (Ra). The correct option is C. radium (Ra)
The elements listed are alkaline earth metals, that is, they belong to group 2 of the period table.
The reactivity of alkaline earth metals increases down the group. That is, the reactivity increases with increase in atomic mass.
Among the listed element, radium (Ra) has the greatest atomic mass and it is the last element as we go down the group.
Hence, the most chemically reactive element among the listed elements is Radium (Ra). The correct option is C. radium (Ra)
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A coffee cup calorimeter contains 153.21 g of water at 22.50 °C. A 65.454 g piece of iron is heated to 101.62 °C. The piece of iron is added to the coffee cup caloriemter and the contents reach thermal equilibrium at 25.68 °C. The specific heat capacity of iron is 0.449 Jg·K and the specific heat capacity of water is 4.184 Jg·K. How much heat, , is lost by the piece of iron?
Answer:
Q = 2232J
Explanation:
In the system, the energy that is lost by the iron is:
Q = S*ΔT*m
Where Q is heat, S is specific heat of iron ΔT is change in temperature and m is mass of the piece of iron.
S = 0.449J/gK
ΔT = 101.62°C - 25.68°C = 75.94°C
m = 65.454g
Q = 0.449J/gK*75.94°C*65.454g
Q = 2232J
Ples help is it Fission, Fusion, or Both 1. Incredibly high amounts of energy are released. ____ 2. Results in a nuclear change. ______ 3. The end product is heavier. _____ 4. Two nuclei become one. ____ 5. The end product is lighter. ____
Answer:
1. fission
2. both
3. fusion
4. fusion
5. fission
Explanation:
Fission refers to the splitting of a single nucleus into two or more small nuclei while fusion refers to the combination of two or more small nuclei into one heavy nucleus.
When a single heavy nucleus splits, energy is released and the end products are 2 or more lighter nuclei. On the other hand, when several light nuclei fuse into one nucleus, energy is absorbed and the end product is one heavy nucleus. Both fission and fusion result in a nuclear change.
Explain why only protons and neutrons are used to calculate mass number
Answer:
The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess. Together, the number of protons and the number of neutrons determine an element's mass number.
