How many protons, electrons, and neutrons does an atom with an atomic
number 50and a mass number 120 contain?

Answers

Answer 1

Answer:

Protons: 50

Neutrons: 70

Electrons: 50

Explanation:

Answer 2

atomic number 50 is

Tin(Sn)

Protons=50

Neutrons=69

Elections=50


Related Questions

PLEASE HELP I'LL MARK BRAINLIEST
Describe, on the molecular level, why my glasses get fogged up when I wear my face mask (so dang annoying). Be sure to use these terms: -decreased kinetic energy -surface -attraction

Answers

Answer:

When you are in a cool place and exhale into your mask, the mask blocks and re-directs some of your breath up toward the top edge of the mask and under your glasses. ... When the warm breath hits the cool lens, the water in the breath condenses causing your lenses to fog up.

In 25 words or fewer, what do you think a scientist would want to explain about this soda?

Answers

Answer:

This soda is brown, sweet, has high carbonation, and is about 200 calories when consumed.

Explanation:

:)

why carbon is a basic thing to classify as organic and inorganic compounds?​

Answers

Answer:

To answer, all living organisms contain carbon-based compounds, which classifies them organic.

Simply, carbon dioxide, is an example of an inorganic compound since it does not contain both carbon and hydrogen. Alternatively, one molecule of carbon dioxide contains one atom of carbon and two atoms of oxygen.

What type of radioactive decay is shown? 82 Br → 82 Kr + te 35 36 Alpha O Beta O Gamma?​

Answers

Answer:

In 1889, Ernest Rutherford recognized and named two modes of radioactive decay, showing the occurrence of both processes in a decaying sample of natural uranium and its daughters. Rutherford named these types of radiation based on their penetrating power: heavier alpha and lighter beta radiation. Gamma rays, a third type of radiation, were discovered by P. Villard in 1900 but weren't recognized as electromagnetic radiation until 1914. Since gamma radiation is only the discharge of a high-energy photon from an over-excited nucleus, it does not change the identity of the atom from which it originates and therefore will not be discussed in depth here.

Because nuclear reactions involve the breaking of very powerful intra nuclear bonds, massive amounts of energy can be released. At such high energy levels, the matter can be converted directly to energy according to Einstein's famous Mass-Energy relationship E = mc2. The sum of mass and energy are conserved in nuclear decay. The free energy of any spontaneous reaction must be negative according to thermodynamics (ΔG < 0), and ΔG is essentially equal to the energy change ΔE of nuclear reactions because ΔE is so massive.

Explanation:

Hope it helps

yo, i need help. 25 points and brainliest. :|

Answers

Answer:

here's your answer...

Explanation:

Full moon, also hey lol.

have a germ-free day.

Easy Chemistry/ Help

Answers

i’m not really sure what the qn is asking for but if i’m not wrong it should be ‘1’ for each blank!

Please can anyone help me? How are the first 20 elements of the periodic table constructed?​

Answers

Answer:

Based on the periodic law

Explanation:

All the elements on the periodic table were constructed based on the periodic law.

Henry Moseley in the 1900s re-stated the periodic law by changing the basis of the law from atomic weight to atomic number. The present periodic law is therefore "the properties of elements are a periodic function of their atomic number".

The atomic number is the number of protons in an atom. Based on the graduation of atomic number on the periodic table, elements are classified into groups and periods.

A metal atom and a non-metal atom bond together. What type of bond do they form?

Question 8 options:

Ionic


Round


Covalent


Glue

Answers

Answer: Iconic

Explanation:Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal.

Which element wants to gain valence electrons while bonding?
a. Neon (Ne)

b. Fluorine (FI)

c. Lithium (Li)

d. Magnesium (Mg)

Answers

Answer:

b. Fluorine (FI)

Explanation:

From the given choices, only fluorine wants to gain valence electrons while bonding.

This is because fluorine is the most electronegative specie from the given choices. An electronegative substance have a high tendency to attract electrons to itself in a bond.

Neon is a noble gas and it is stable. Lithium and Magnesium are metals that are electropositive. They prefer to lose electrons than to gain electrons.

At 303 K, the volume of a gas is 30.0 ml. At constant pressure, what is the new
volume of the gas if the temperature is decreased to 283K?

Answers

Answer:

V₂ = 28 mL

Explanation:

Given data:

Initial temperature = 303 K

Initial volume = 30.0 mL

Final temperature = 283 K

Final volume = ?

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 30.0 mL × 283 K /303 K

V₂ = 8490 mL.K / 303 K

V₂ = 28 mL

What is the number of protons for the following?
190
+2
Os
76

Answers

Answer:

190+2=192

Explanation:

192 add it 192 added

Answer: they are right

Explanation:

What is the mass 5.00 x 1022 molecules of PbCI2

Answers

Answer:

ion know this one

Explanation:

the first 5 elements (in increasing order) that are found in group 18

Answers

Answer:

Today, I will present the first eighteen elements which are Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminum, Silicon, Phosphorus, Sulfur, Chlorine, and Argon.

First 5: Hydrogen. The first and simplest element on the periodic table.

Helium. a very light colorless element that is one of the six inert gasses.

Lithium. A very soft, light metal.

Beryllium. A very light metal; although it is 3 1/2 times the density of Lithium.

Boron. The fifth element in the periodic table.

Explanation:

Relate pH values of 9.1, 1.2, and 5.7 to hydronium and hydroxyl ion concentration.

Answers

Answer:

9.1 = basic  1.2= very acidic  5.7= acidic

Explanation:

Name a molecule that is small enough to enter the cell
protein molecule
starch molecule
oxygen molecule
nitrogen

Answers

Answer:

oxygen molecule

Explanation:

I belive it is oxygen molecule

Answer:

Oxygen Molecle

Explanation:

I think that it is an oxygen molecule because oxygen can go through and or everything.

Lily replicates an experiment that found that the number of calories in a particular food is 50 kcal. She obtained data from five trials: 50 kcal, 72 kcal, 50 kcal, 12 kcal, and 50 kcal.

Which best describes her data results?

accurate
incorrect
invalid
precise
PLEASE HURRY IM TIMED

Answers

Answer:

the best that describes her data result is precise

If the atomic number of Lithium is 3 and its mass number is 7, how many protons, electrons, and neutrons does a neutral
atom of Li have

Answers

Answer:

Protons = 3

Neutrons = 4

Electrons = 3

Explanation:

For every atom, the atomic number is equal to the number of protons.

In a neutral atom (atom with no charge) the number of protons is equal to the number of electrons.

To calculate neutrons subtract the number of protons (atomic number) from the rounded molar mass:

7 - 3 = 4 neutrons

Also can someone help me with this one as well, thank you! :)

Answers

Answer:

a. The density of the aluminum will change if the sample gets too big.

Explanation:

Since increasing its size increases its volume hence it affects the value of its density by decreasing.

note: Density = mass/volume.

What are the first two levels of cellular organization?

Answers

Answer:

Cells and tissue

Explanation:

Cells are the smallest functional units of all living things

Tissue is organic material from which organs and their bodily structures appear

At 6 atmosphere pressure, the volume of a gas is 1200 ml. What pressure is
required to reduce the volume of a gas to 200 ml without changing the
temperature?

Answers

Answer:

36 atm

Explanation:

The pressure required can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we are finding the required pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

From the question we have

[tex]P_2 = \frac{6 \times 1200}{200} = \frac{7200}{200} = \frac{72}{2} \\ [/tex]

We have the final answer as

36 atm

Hope this helps you

write the cations and anions present in NaCl​

Answers


In table salt, sodium chloride, sodium is the cation (Na+) and chloride is the anion (Cl-).

BRAINLEST WILL BE GIVEN TO A RIGHT ANSWER!!!!

Potassium (K) has a charge of +1, and sulfur has a charge of –2. Which best describes the compound they make?

A) The chemical formula is K2S, and the name is potassium sulfide.

B) The chemical formula is KS2, and the name is potassium sulfide.

C) The chemical formula is K2S, and the name is sulfur potassium.

D) The chemical formula is KS2, and the name is sulfur potassium.

Answers

Answer:

A) The chemical formula is K2S, and the name is potassium sulfide. Explanation:

edge

“Different periods in human history are named for the materials used to make tools. Dr. Franklin is searching through layers of soil, looking for tools made by humans. After screening the top layer of soil, he uses a magnet to help speed up the search.”

Which type of location is Dr. Franklin most likely searching?
A) a cave from before the Stone Age
B) a Stone Age cave
C) a Bronze Age battle site
D) an Iron Age farm​

Answers

Answer:

Iron age farm

Explanation:

edge 2020

Answer:

D

Explanation:

Got it right on edge

How many liters of ammonia are formed with 49.8 g of nitrogen gas reacting with 10.7 g of hydrogen gas at S.T.P.?

Answers

the reaction is as follows:

N2+3H2---->2NH3

the number of moles of N2 is 49.8g/14gmol^-1=3.56mol

the number of moles of H2 is 10.7g/2gmol^-1=5.35mol

here, since the ratio of N2/H2 is 1/3, we can see that H2 is the limiting reagent. therefore, the reaction proceeds as follows:

N2 + 3H2 ---------------> 2NH3
5.36mol (2/3)(5.36mol)=3.57mol

therefore, the number of moles of ammonia formed is 3.57mol. at STP, P=1atm, T=273K.
Therefore, V(NH3)=(3.57)(22.38)=79.822 L

Which of the following diagrams correctly represents the formation of a compound consisting of magnesium and fluorine?

Answers

Answer:

See explanation

Explanation:

The image attached describes the formation of magnesium fluoride.

Magnesium has two valence electrons while fluorine has seven valence electrons. Magnesium can now transfer one electron each to two fluorine atoms thereby forming the compound MgF2.

This has been shown pictorially in the image attached to this answer.

property of an acide ​

Answers

Answer:

hi

Explanation:

acids are corrosive, rective when combined with bases form salt and when combined with metal form h2o

Answer:

page no,165 ma xa. yo question KO ans

In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 separate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is the independent variable?
a) the amount of water
b) the metals strips
c) amount of rust
d) hydrochloric acid

Answers

Answer:

b) the metals strips

Explanation:

In an experimental design, an independent variable is a variable that is changed or manipulated in a series of experiments. An independent variable is not dependent on any other variable in the experiment. The hypothesis for this experiment is stated to be: "If the chemical activity of the metallic wrapper is increased, then less rusting of iron will occur. The independent variable relates to the type of metal wrapping strip, and the dependent variables are the amount of rusting and color of the water.

Two individual atoms of the same element are slightly different. One has one more proton than it has electrons. The other has one more electron than it has protons. These atoms are both

ions
isotopes
freons
xenons
phlogistons

Answers

Answer:

ions

Explanation:

Individual atoms of the same element but having slightly different number of protons and electrons are called ions.

Ion is a charged particle.

An atom is made up of three fundamental subatomic particles. Protons are the positively charged particles Electrons are the negatively charged particles Neutrons do not carry any charges.

When the number of protons > electrons the body is positively charged.

When the number of electrons > protons the body is negatively charged.

Charged particles are called ions.

Write the net ionic equation for the following reaction:

AgC2H3O2(aq) + CaCl2(aq) →

Answers

Answer:

2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)

Explanation:

The net ionic equation reflects the main reaction that occurred in the system. It tells you the most important reaction that took place.

If we first put down the balanced molecular equation for the reaction, we have;

CaCl2(aq) + 2 AgC2H3O2(aq) ---------> 2 AgCl(s) + Ca(C2H3O2)2 (aq)

The net ionic equation is;

2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)

Plants make their own food and are not required to consume food for energy. Into which category does this characteristic cause plants to be assigned?​

Answers

Answer:

Autotrophic or Producers

Explanation:

They are often called producers because they make their own food.

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