Answer:
Its called contraction.
Explanation:
Explain in terms of atomic structure, why cesium has a lower first ionization energy than rubidium. Determine the family/group in which each element is located
Answer:
Explain in terms of atomic structure, why Cesium (Cs) has a LOWER first ionization energy than Rubidium (Rb). Cesium is further down on the periodic table. ... The ion K+1 has one more electron than the atom K. K+1 has lost one electron from its valence shell, and therefore has one less electron shell than K.
Explanation:
Radium contains the most electron shells, which creates a shielding effect that reduces the ionization energy.
Radium:
[tex][Rn]7 S^2[/tex] Layer atomic radiusCalcium:
[tex][Ar]4S^2[/tex] Smaller atomic radiusA higher proportion of electron shells creates a shielding effect, resulting throughout a decreased zeff as well as easier ionization of the outermost election.
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Bainliest. Mole Conversion
Using dimensional analysis determine how many moles are present in 125g of Oxygen gas. O = 16.0 g/mol (3 sig figs)
Answer:
125g × 1 mol/16 grams = 7.81 × avogadros #
What is the diffrence between organic and inorganic compounds?
Answer:
D. Organic compounds contain carbon and inorganic compounds do not.
Explanation:
What happens when
an element is
oxidised?
Answer:
The process in which a substance loses an electron in a chemical reaction is called oxidation. The atoms that lost electrons are said to be oxidized. Atoms can be oxidized by nonmetals. Reduction is gain of electrons and thus gaining of negative charge.
Explanation:
:)
(a)
Name the type of particles that exist in the following objects.
(i) Gold ring:
(ii) Water:
(iii) Balloon:
Answer:
Molecule?
Explanation:
I wanna say molecule, because all of the objects listed have that in common.
HNO3 + Mg(OH)2 yield Mg(NO3)2 + H2O
Answer:
yes
Explanation:
because this is a neutralization reaction that yield salt and water
A airliner has an internal pressure of 1.00 ATM and temperatures of 25°C at take off if the temperature of the airlines routes to 17°C during the flight what is the new cabin pressure
Answer:
Explanation:
Using Gay lussac's law equation as follows;
P1/T1 = P2/T2
According to VSEPR theory what causes molecular shapes to form?
A: The attraction of electrons and protons
B: The attraction of protons and neutrons
C: The repulsion of electrons and electrons
D: The repulsion of protons and protons
Answer:
C: the repulsion of electrons and electrons.
Explanation:
According to the VSEPR theory, molecular shapes adjust so that the electrons can be as far apart as possible due to electrons repelling each other, which would mean the only possible answer is C.
An atom or ion has 43 neutrons , 36 protons, and 36 electrons. Identify the element symbol, and determine the mass number and charge for this atom or ion.
Answer:
Element name: Krypton
Symbol: Kr
Mass Number: 79 AMU
Charge: 0, electrons and protons cancel out.
ion: none, it is a halogen.
Explanation:
Krypton is the 36th element on the periodic table and has 36 protons. The mass is protons plus nuetrons so 36 + 43 is 79 AMU or Atomic Mass Units.
Which situation describes a reaction with a percentage yield of 100%?
Select one:
a. none of them
b. No competing reactions occur and the limiting reagent is fully consumed.
c. The amounts of reactants initially present are stoichiometric.
d. The product is more than the limiting reagent has the potential to produce.
Answer:
Explanation:
D
2.0mol of Iron(s) reacts with 48.0g of Oxygen gas to form iron(III)oxide(s). Complete the problem by choosing the correct pull down quantities in the BCA table below.
Fe and O2 = 0 mol
Fe2O3 = 1 mol
Further explanationGiven
2 mol Fe
48 g O
Required
Fill BCA table
Solution
mol Oxygen :
= mass : MW O2
= 48 g : 32 g/mol
= 1.5 moles
Limiting reactants :
Fe : O2 = 2/4 : 1.5/3 = 0.5 : 0.5
Both reactants have completely reacted
mol Fe2O3 :
= 2/4 x mol Fe
= 2/4 x 2
= 1
BCA table
Reaction
4Fe + 3O2 --> 2Fe2O3
Before 2 1.5 0
Change 2 1.5 1
After 0 0 1
How do you balance a chemical equation?
Answer:
When you balance a chemical equation you change coefficients.You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation you add the coefficients to make sure there are the same number of atoms on each side of the arrow.
Explanation:
Hope this helps. MARK BRAINLEST!!
Which tool would help a scientist observe planets?
Barometer
O Microscope
Telescope
Thermometer
Answer: The correct answer would be
Telescope
Explanation:
i took the test
As the amount of charge on two objects increases, the strength of the electrical force between the objects
increases.
decreases.
varies.
remains the same.
Answer:
Increase is the answer
Explanation:
Increase is the answer hopes this helps you
Given that the amount of charge increases, then, the electrical force between the two objects will also increase
Coulomb's law equationF = Kq₁q₂ / r²
Where
F is the force of attraction K is the electrical constant q₁ and q₂ are two point charges r is the distance apartFrom the Coulomb's equation,
F = Kq₁q₂ / r²
We can see that the force (F) is proportional to the charges (q₁ and q₂).
This simply implies that as q₁ and q₂ increase, F will also increase and as q₁ and q₂ decrease, F will also decrease.
With the above information in mind, we can conclude that the force will increase if the amount of charge on the two objects increases.
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The graph shows the changes in the phase of ice when it is heated which of the following temperatures describes the value of A
Answer:
Less than 0 °C, because B represents the temperature at which ice melts.
Explanation:
Answer: b. 100 °C, because it is the boiling point of water.
Explanation: i got it right on the test
PLZZZ HELP MEEEE!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!
Combine Boyle’s law, Charles’s law, and Gay-Lussac’s law into a single proportional relationship between pressure (P), volume (V), and temperature (T). Use the symbol “∝” to represent “is proportional to.”
Explain your reasoning.
On combing Boyle’s law, Charles’s law, and Gay-Lussac’s law into a single proportional relationship law:
[tex]PV\propto T[/tex]
Explanation:
Boyle's law states that the pressure of the ideal gas is inversely proportional to the volume occupied by the ideal gas at a constant temperature in Kelvins.[tex]P\propto \frac{1}{V}[/tex] ( Constant temperature)
Charle's law states that volume occupied by the ideal gas is directly proportional to the temperature of the ideal gas in Kelvins, under constant pressure.[tex]V\propto T[/tex] (Constant pressure)
Gay-Lussac’s law states that the pressure of the ideal gas is directly proportional to the temperature of the ideal gas in Kelvins, under a constant volume.[tex]P\propto T[/tex] (Constant volume)
On combing Boyle’s law, Charles’s law, and Gay-Lussac’s law into a single proportional relationship law we get:
[tex]PV\propto T[/tex]
In the above relation all the three laws; Boyles law, Charles law, and Gay Lussac's laws are followed.
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Mg4O2 is an example of what type of bond?
A ball cart is moving at a rate of 2ms the cart suddenly stops and the ball continues to travel in the same direction at the same speed this is a example of
What is the bond order of CH2O
Answer:
It forms 2 single sigma bonds with 2 hydrogen atoms and double (1sigma and 1pi bonds with oxygen atoms. They are convalent
what is light energy
Answer:
Light energy is a form of electromagnetic radiation.
Explanation:
Light consists of photons, which are produced when an object's atoms heat up. Light travels in waves and is the only form of energy visible to the human eye.
what electives should i take in highschool to prepare to take criminology?
Answer:
depending on what school you go to and what classes you are allowed to take in which grades, you should take forensics.
Answer:
forensics, definitely the highest science class you can do with your grades because if you know exactly how the body works you should be able to follow their body gestures to find out if their lying.
Explanation:
This element, in the nitrogen family, has more protons than silver, but less than xenon
Answer:
antimony
Explanation:
it has 51 protons, 4 more than silver and two less than xenon
Wow! The future is amazing. Wormholes allow travel to distant planets in a flash. In fact, you can vacation just about anywhere in the universe. I’ve been scoping out one planet in particular. The brochure says it has warm oceans, giant beaches, and incredible scenery, like nothing you’d see on Earth. The resort I want to go to is located in the planet’s Southern Hemisphere, and I want to make sure I go at the right time. Maybe you can help me. Here’s what I know. The planet, called Cryxxlyx, is tilted on its axis at 90 degrees relative to its sun. It takes about 400 days for the planet to complete one orbit of its sun. Does it matter when during its orbit I go to that resort? I’ve drawn a little diagram of the planet and its orbit. I’ve also marked the location of the resort. Remember, I want warm temperatures and lots of sunshine.
Answer:
OMG HOW COOL
Explanation:
Which type of electromagnetic radiation is most likely to be non-ionizing
radiation?
A. Radio
B. Ultraviolet
O O O O
C. X-rays
D. Gamma rays
Answer:
A)Radio.
Explanation:
pls give me brainliest
New rocks are heavier than old rocks.
An atom with an atomic number of 33 is ionized and found to have a charge of -3. How many electrons in the atom? What is the isotope symbol of this atom ?*
Explanation:
The element with atomic number of 33 is Arsenic (As)
ionized and found to have a charge of -3.
The negative sign denotes that it gained an electron. So -3 means it gained 3 electrons.
How many electrons in the atom?
Total number of electrons = Number of electrons gained + Electrons in it's neutral state
Total electrons = 3 + 33 = 36
What is the isotope symbol of this atom ?
As³⁻ it has the same number of electrons with Krypton (Kr)
1. The back legs of frog are very strong and it has webbed feet because ……..
Answer:
It helps them to swim
I think this ans may help you
What label is missing from the apparatus below?
PlS ANSWER I Will GIVE BRAINLY TO First!!
Answer:
spatula I guess ..........
Answer:
ur mom
Explanation:
ha jkbhssjsjsjueueueehshshsshshhssebbbehwhhshshs
whats the balance to Sr + O, SrO
Answer:
SrO = Sr + O - Chemical Equation Balancer.
Explanation:
help meh......please...
Answer:
The third one
Explanation:
Nickel-62 has the highest binding energy per nucleon of any isotope for any element. Isotopes heavier than 62Ni cannot be formed by nuclear fusion without losing energy.