why is xenon monatomic but bromine is diatomic

Answers

Answer 1
B 3-4 is the auto
If it’s needs

Related Questions

CORRECT ANSWER WILL GET BRAINLIEST

Is the following nuclear equation balanced?
A. yes
B. no

Answers

Answer: B. no

Explanation:

The answer is no!! hope this helps :)

FeCl3
+
NaOH →
Fe(OH)
+
Naci
-
balance plzzzz help I live give u the brainliest

Answers

l don’t think that’s a problem ...

Name one nutrient indicator and explain how it works.

Answers

Answer:

Hi this is Adhira please make me as brainlist

Explanation:

The nutritional status indicators for the CDC Growth Charts include obesity, overweight, underweight, and short stature. Percentiles are used to rank an individual or a group on a growth chart and indicate where either fits in the context of the reference population

If a 425 gram sample of Uranium-235 had a half-life of 8 days, how much of the sample would remain after 16 days?
type your answer
grams

Answers

What is half of 425 grams? Ok. 212.5 alright. Now half that - 106.25 grams I think.

what type of weather does a warm front cause and why

Answers

Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms.

Hope this helps!
Brainliest is much appreciated!

What should the IUPAC name for a binary covalent compound lack? prefixes Roman numerals an -ide ending the name of a nonmetal.

Answers

The IUPAC name for a binary covalent compound will lack roman numerals.

Binary covalent compound comprises of two elements which forms a

compound through the sharing of electrons.

The sharing of electrons is referred to as covalent bonding and naming such

compounds require prefixes such as mono-, di- , tri- etc.

The standard method of naming these compounds should be with the

prefixes and not with the roman numerals.

An example is carbon(IV)oxide which is wrong in  IUPAC naming.

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Answer:

B

Explanation:

Just did the test on edge 2021

The elements fluorine (F), chlorine (Cl), and Iodine are all part of the same ____________________ on the periodic table.



Question 9 options:

group
period

Answers

The elements fluorine (F), chlorine (CL),and Iodine are all parts of the same _group___ on the periodic table

What did you observe about the properties of the sodium carbonate mixture before the substances were mixed together?

Answers

Answer:

Would you consider adding a sodium carbonate solution to a magnesium sulfate .

Explanation:

??

How many grams of hydrogen gas are needed to react completely with 54.0 g of oxygen gas, given the following balanced chemical reaction:
2H2 +O2 --->2H2O

Answers

Answer:

6.75g of hydrogen will completely react with 54g of oxygen

Explanation:

What’s clues indicate that a chemical reaction has occurred?

Answers

Answer:

Color change, formation of bubbles, and temperature change

40 PIONTS!! PLZZZZ HELP

Determine whether each of the following will undergo dissociation,
dissolving or ionization. Then write the solvation equation for each
substance:
a) Lithium oxide

b) Magnesium nitride

c) Hydrobromic acid

Answers

Lithium oxide is able to undergo both the processes of dissolution and dissociation.

Dissociation refers to the break down a chemical substance into its constituents. Ionization refers to the loss of electrons from a chemical specie while dissolving refers to the ability of a solid to form a solution.

Let us now look at each of the following species;

Lithium oxide undergoes dissolution and dissociation. Magnesium nitride undergoes dissolution and dissociation.Hydrobromic acid  undergoes dissolution and dissociation.

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The compound of ammonium sulfate consists of two ions. NH4+ and SO42- both of which are polyatomic ions. a molecule of the compound consists of (one, two , or four) NH4+ ions and (one, two, or four) SO42- ions?

Answers

Answer:

Blank #1: Polyatomic

Blank #2: 2 (see explanation)

Blank #3: 1 (see explanation)

Explanation

Both the ammonium ion  and the sulfate ion  contain more than one atom in each ion. The two species are thus polyatomic. The chloride ion , for example, is monoatomic.

Superscripts above formulae of the ions indicate their charge. Each ammonium ion carries a positive one (+1) charge. Each sulfate ion carries a charge of negative two (-2).

Ammonium sulfate is an ionic compound. A sample of this compound contain myriads of ammonium ions and sulfate ions. The ions are packed in three-dimensional lattices. Thus unlike water, ammonium sulfate does not exist as molecules in nature.

Assuming that the second and third blanks refers to a formula unit, rather than a molecule, of ammonium sulfate. The empirical formula of ammonium sulfate gives the minimum whole-number ratio between the two ions in a sample.

Charges shall balance between the two ions. Ammonium ions are of charge +1. Sulfate ions are of charge -2. The sample shall thus contain two ammonium ions for every one sulfate ion.

The empirical formula of ammonium sulfate is therefore .

There are thus two ammonium ions  and one sulfate ion  in each formula unit of ammonium sulfate.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore,  a molecule of the ammonium sulfate consists of one NH₄⁺ ions and one SO₄²⁻ ions.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. The compound of ammonium sulfate consists of two ions. NH₄⁺ and SO₄²⁻ both of which are polyatomic ions. A molecule of the ammonium sulfate consists of one NH₄⁺  ions and one SO₄²⁻ ions.

Therefore,  a molecule of the ammonium sulfate consists of one  NH₄⁺ ions and one SO₄²⁻ ions.

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what are the relationships among bond order, bond length, and bond energy?

Answers

Explanation:

When a bond is strong, there is a higher bond energy because it takes more energy to break a strong bond. This correlates with bond order and bond length. When the bond order is higher, bond length is shorter, and the shorter the bond length the greater the bond energy.

Help

what is isotopes

Answers

Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons.

Not every earthquake has a(n) ______, but every earthquake has _____that occur in _____ the mainshock.

1.
Aftershock
Foreshock <------

2.
Aftershock <-------
Foreshock


3.

Places far away from
The Same place as <------


Am i right?

Answers

Yes I’m pretty sure that’s correct

Not every earthquake has a(n) Foreshock, but every earthquake has an Aftershock that occurs in the Same place as the mainshock.

What is an earthquake?

An earthquake is defined as a natural disaster in which there are tectonic plates that are present on the earth's crust collides with each other.

An Earthquake can be minor as well as natural depending upon the frequency it causes the damage. Earthquake is the Shaking of Earth and was much destruction of the economy and manpower.

Surroundings are being disturbed like trees will fall, and buildings will collapse which will cause damage to the economy as well as to human life.

Foreshock is the before shop which happens before the earthquake and aftershock is the other socks that happen after the earthquake

Thus, the correct options are 1. Foreshock, 2. Aftershock, 3. The Same place as.

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The molecular formula for a compound with a molar mass of 180.18g that contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen by mass is

Answers

Answer:

C6H12O6

Explanation:

First you need to find the empirical formula by the percents that they're giving you. You assume that is 100 grams and if for example you have 40% of carbon you will have 40 grams of carbon.

1.Find the number of moles of each atom

C: 40g÷12g/mol= 3.33 mol

H: 6.7g÷1g/mol= 6.7 mol

O: 53.3g÷16g/mol= 3.33 mol

You divide all ratios by the minimum ratio and you obtain the empirical formula

CH2O

Since you're given the molar mass, you now have to find the molar mass of CH2O by adding the molar mass of each element present and repeated in the compound.

CH2O= 30g/mol

Now you know that the molar mass of the molecular formula we are looking for is 180.18 g/mol, and since the empirical formula is the molecular formula in its smaller ratio, by logic you can say that:

180.18g/mol ÷ 30g/mol= 6

So, you now know that the empirical formula is being multiplied by a factor of 6 to reach a compound with a molar mass of 180.18g/mol, so you multiply each subscript of the empirical formula by 6 obtaining:

C6H12O6

When sodium is put in water, the metal floats on the surface and reacts to form sodium
pls help asap

Answers

Answer: Sodium also floats on the surface, but enough heat is given off to melt the sodium (sodium has a lower melting point than lithium and the reaction produces heat faster) and it melts almost at once to form a small silvery ball that dashes around the surface.

Explanation:

Answer:

hydroxide.

Explanation:

Alkali metals are in group 1 of the Periodic Table. They are on the left of the Periodic Table. These are the alkali metals as follows:

LithiumSodiumPotassiumRubidiumCaesiumFrancium

When alkali metals react with water they make alkaline solutions, so the universal indicator turns people and they produce hydrogen and a metal hydroxide. When sodium is put in water, the metal floats on the surface it reacts to form sodium hydroxide and hydrogen.

A ball rolls down a hill. It starts with velocity of 2 ms. After 2 seconds, the ball has a velocity of 12 ms. What is the acceleration of the ball? 2 ms2 4 ms2 5 ms2 7 ms2

Answers

Answer:

5 ms2

Explanation:

The acceleration of the ball is 5 ms2.

What is acceleration?

Acceleration is the rate at which an object's velocity with respect to time changes. It is a vector quantity to accelerate (in that they have magnitude and direction). The direction of the net force acting on an object determines the direction of its acceleration.

The acceleration of the car in its present direction of motion is referred to as a linear acceleration (or tangential acceleration in circular motions), and the passengers on board feel a force pressing them back into their seats as a result.

The acceleration that is used to change direction is referred to as radial acceleration (or centripetal acceleration in circular travels), and the reaction that the passengers feel is a centrifugal force.

Therefore, The acceleration of the ball is 5 ms2.

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calculate the molarity of a 50.0 ml of a 0.150 m hcl solution when 30.0 ml of water is added.

Answers

Answer:

0.09375 M

Explanation:

You want to use the following equation:

M1*V1=M2*V2

Then plug in the 50ml to V1 and 0.15M to M1 and 80ml to V2 (add the 50 and 30). The next thing you want to do is change the mL to liters, since Molarity is moles/liter. Once that is done, solve algebraically for answer.

** Also don't forget to capitalize the M when you mean Molarity, because it is different than m.**

Hope this helps!

Enter the correct ground-state (or lowest energy) configuration based on the number of electrons: 1s^2 2p^6 3s^2.

Answers

Answer:

The ground state represents the lowest-energy state of the atom.

Explanation:

sd

Which sentence best describes what happens during a change of state from a solid to a liquid?

A. The temperature stays the same and the particle speed increases

B. The temperature increases and the particle speed stays constant.

C. The temperature decreases and the particle speed decreases.

D. The temperature stays the same and the particle speed stays constant.​

Answers

Answer:

The temperature stays the same and the particle speed stays constant

Mass is the amount of matter in an object, but
weight is
A. the size of the matter.
B. the amount of space matter takes up.
C. the shape of the matter.
D. gravity's pull on the matter.

Answers

Answer: is equal to the gravitational pull on an object

Explanation:

now imagine that you have analyzed an additional vntr. from the blot below, what is the expected frequency of occurrence?

Answers

You should re-upload this question with a picture of the plot below. Without access to that it’s impossible to answer this question.

what are three different facts about mass
plz tel will give brainlyest

Answers

Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!

Explanation:

mass- the quantity of matter in a physical body

1) mass is a measure of the body’s inertia

2) mass is measured in kilograms (kg)

3) mass of an object also determines the objects strength of its gravitational attraction to other bodies

Which neutral atom is isoelectronic with N-3?

Answers

The neutral atom is isoelectronic with N⁻³ is Neon (Ne).

Isoelectronic are those which have same number of electrons or we can say that same electronic structure.

For finding out that the species are isoelectronic , we just have to count there no. of electrons of atoms and if they have same no. of electron then they said to be isoelectronic species.

no. of electrons in Nitrogen N = 7 ( atomic no.)

no. of electrons in Nitride ion N⁻³ = 7 + 3 = 10

no. of electrons in Neon Ne = 10 ( atomic no. and neutral atom)

so, no. of electrons in Nitride ion N⁻³  = no. of electron in Neon Ne

this means , N⁻³ , Nitride ion is isoelectronic with Neon Ne.

Thus, The neutral atom is isoelectronic with N⁻³ is Neon (Ne).

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A sample of tin (Cp = 0. 227 J/g•°C) is placed in a freezer. Its temperature decreases from 15. 0°C to â’10. 0°C as it releases 543 J of energy. What is the mass of the sample? Round your answer to three significant figures. G.

Answers

Taking into account the definition of calorimetry, the mass of the sample is 478.41 grams.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

So, the equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Q= -543 J because the energy is releasesc= 0.227 [tex]\frac{J}{gC}[/tex]m= ?ΔT= Tfinal - Tinitial= 10 C - 15 C= -5 C

Replacing:

-543 J= 0.227 [tex]\frac{J}{gC}[/tex]× m× (-5 C)

Solving:

[tex]m=\frac{-543 J}{0.227 \frac{J}{gC}x(-5 C)}[/tex]

m=478.41 grams

In summary, the mass of the sample is 478.41 grams.

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The____ is the basic unit of life

Answers

Answer:

cell

Explanation:

Cells are the most simple, basic units of life

Answer:

the CELL is the basic unit of life.

Explanation:

I had this is my science lesson

have a great day!

hope this helps!

feel free to mark as brainliest! ;)

This chemical equation is balanced.
F2 + 2NaBr
2NaF + Br2
How does the balanced chemical equation show the conservation of matter
in this chemical reaction?
A. There are fewer Na atoms in the reactants than in the products.
B. The number of Fatoms in the reactants equals the number of F
atoms in the products.
C. The compound NaF is a substance that is different from the
compound NaBr.
D. There are more Br atoms in the reactants than in the products.

Answers

B, you can see there are 2 F atoms on each side of the equation

3. Explain why the statement "electrons are always located close to the nucleus of an atom" is not really accurate,

Answers

Answer:

Electrons are stored in different electron shells with the nucleus in the center. Depending on the size of the element, the electrons may need more shells, making the electrons further away from the nucleus.

Explanation:

Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.  the statement "electrons are always located close to the nucleus of an atom" is not really accurate.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge.

Electrons always move in fixed orbit around the nucleus with a particular force. Electrons may or may not be close to the nucleus. Depending on the size of the element, the electrons may need more shells, making the electrons further away from the nucleus.

Therefore,  the statement "electrons are always located close to the nucleus of an atom" is not really accurate.

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Use the Periodic Table to find molar mass of water. Sodium hydroxide (NaOH) and hydrochloric acid (HCl) react to form sodium chloride (NaCl) and water according to the equation: NaOH HCl → NaCl H2O What mass of water forms when 2. 75 Ă— 10â€""4 mol NaOH reacts completely? 2. 75 Ă— 10â€""4 mol NaOH = g H2O.

Answers

Considering the reaction stoichiometry, 0.00495 grams of water is produced when  2.75×10⁻⁴ moles of NaOH reacts completely.

Sodium hydroxide (NaOH) and hydrochloric acid (HCl) react to form sodium chloride (NaCl) and water. So, the balanced reaction is:

NaOH + HCl → NaCl + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

NaOH: 1 moleHCl: 1 moleNaCl: 1 moleH₂O: 1 mole

In the periodic table, you can find the molar mass of the elements, also called atomic mass or atomic weight. So, to calculate the molar mass of a compound, you must add the molar mass of the elements of the compound multiplied by the times they appear in the compound.

So, in the case of water:

H₂O= 2× 1 g/mole + 16 g/mole

H₂O= 18 g/mole

Then, if by stoichiometry of the reaction 1 mole of water is produced, the mass of water produced is calculated as:

mass H₂O= 1 mole× 18 g/mole

mass H₂O= 18 g

Then you can apply the following rule of three: if by stoichiometry 1 moles of NaOH produce 18 grams of H₂O, 2.75×10⁻⁴ moles of NaOH will produce how much mass of H₂O?

[tex]mass of H_{2} O=\frac{2.75x10^{-4} moles of NaOHx18 grams of H_{2} O}{1 mole of NaOH}[/tex]

mass of H₂O= 0.00495 grams

In summary, 0.00495 grams of water is produced when  2.75×10⁻⁴ moles of NaOH reacts completely.

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