Chemistry Middle School

Which two elements on the periodic table are in the same period? 1:b and in 2:na and s 3:k and ba 4:se and te

Answers

Answer 1

The answer will be 4

Answer 2

The elements that are in the same period in the periodic table are Na and S (2).

In the periodic table, rows are named periods and columns are named groups.

Which two elements on the periodic table are in the same period?

1:B and In. NO. B is in period 2 and In in period 5.

2:Na and S. YES. Both are in period 3.

3:K and Ba. NO. K is in period 4 and Ba in period 6.

4:Se and Te. NO. Se is in period 4 and Te in period 5.

The elements that are in the same period in the periodic table are Na and S (2).

You can learn more about the periodic table here: https://brainly.com/question/11155928

Which Two Elements On The Periodic Table Are In The Same Period? 1:b And In 2:na And S 3:k And Ba 4:se

Related Questions

Which metals are so reactive that they are never found as uncombined elements in nature?

A. alkaline earth metals

B. alkali metals

C. rare earth metals

D. transition metals

Answers

B

This element is rare and it reacts very quickly to other elements

List the five physical phase changes of matter and give one example for each.

Answers

Answer:Melting.

Freezing.

Evaporation.

Condensation.

Sublimation.

Explanation:

Answer: Examples for the five transformations previously given.

For the first four, we encounter common examples in everyday life, all to do with water:

Freezing - liquid to solid, e.g. water to ice, e.g. making ice cubes.

Melting - solid to liquid, e.g. ice to liquid water, melting ice cubes or snow flakes.

Condensation - gas to liquid, e.g. water vapor (gas) to liquid - water vapor in air (humidity) condenses to form liquid droplets on the outside of a cold beverage glass on a hot humid day; or cloud formation in the atmosphere.

Evaporation - liquid to gas, e.g. liquid water on clothes evaporates as clothes dry on clothesline or in dryer

While water can sublime under certain conditions of temperature and pressure, it is less evident in everyday life. Carbon dioxide however is a more common example.

Sublimation - solid to gas, e.g. "dry ice" disappearing. The visible smoke associated with dry ice is most likely just condensing water vapor in the air as the solid carbon dioxide cools the air.

Explanation:

Where does most fresh water exist?

Answers

Answer:

aquifers, ice caps, and glaciers I think

The answer:

(C) aquifers, ice caps and glaciers

List 2 evidences for climate change.

This is 6th grade science. Amplify.

Answers

Answer:

Global Tempurature is rising

Sea level is rising

Explanation:

This is evidence of climate change. Depending on where you live it could be different like in florida there was a drought.

two pieces of evidence would be that
1. our sea level is rising my a lot
2. our global temperature has changed a lot over the years as well.

A 10-ft moving truck has a volume capacity of 402 cubic feet, which is equivalent to 1.138 x 10^7 milliliters. What
mass of silver, in megagrams, will fit in this moving truck? The density of silver is 10.49 g/mL.

_________ Mg (input numerical answer only)

Answers

Answer: The mass of silver is 1.19 X 10^14 M g

Explanation: The volume of the truck is 402 cubic feet or 1.138 x 10⁷ mm.

The density of silver is 10.49 g/mL.

We need to find the mass of silver that will fit in this moving truck. Density equals mass divided by volume. So,

d= m/v where m= mass m= d x VM=10.49 g/mL X 1.138 X 10∧7 mL

M=119376200 g 1 gram=10⁻⁶ Megagram 119376200= 1.19 X 10^14 Mg hence the mass of silver is 1.19 X 10^14 M g hopefully this will help you please mark me as brainlist

the mass of silver is 1.19 x

Someone please help me if right I’ll give you 5$

Answers

Answer:DId you even read it you have to that in your lab class and says you need other information aint no way i can answer that

Explanation:

The answer above is correct just pass it

help pls i will give brainlest

Answers

Answer: its 5ft tall and 12 inches

Explanation:

The answer is 5 foot 12 inches

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

Which of the following is a basic need?
car
shelter
bike
computer

Answers

shelter, you need a place to live

shelter is a basic need

Hammerhead Shark Process of Sexual Reproduction

Answers

Answer:

The hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young. Like other sharks, fertilization is internal, with the male transferring sperm to the female through one of two intromittent organs called claspers. The developing embryos are at first sustained by a yolk sac.

Explanation: hope this helped

Sand at a beach becomes very warm after being exposed to sunlight for many hours due to what type of heat transfer?
A. Conduction
B. Convection
C. Raditation

Answers

Answer:

Explanation:

Answer:

Explanation:

When lie down on hot sand, the energy flows from the sand to your body by conduction. Conduction is the transfer of heat between two things that touch each other.

What is the name given to this group of elements?

a.
halogens
c.
transition metals
b.
alkali metals
d.
noble gases

Answers

Answer: The answer is A. Halogens

Explanation:

I hope this helps you :)

The name given to this group is halogens

?What statement best describes the arrangement of the atoms in an ethylene molecule?

Answers

Answer: Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

Part A: ____ objects are more dense
Part B: ____ Objects are less dense

Answers

Answer:

Part A: Solid objects with a greater mass per unit of volume are more dense.

Part B: Objects with a lower mass per unit of volume are less dense.

Explanation:

Not sure if this answers your question!

Answer:

A: solids

B: gases

Explanation:

Not sure if this is the answer you are looking for, but if it is hope it helps.

no problems

Pls could help me complete the "standart form" part :(

Answers

Answer:

I don’t know bro

Explanation: WHY DID U REMOVE THIS

What determines how much a substance will change temperature?

Answers

Answer:

it depends on the mass of the situation

Explanation:

The heat Q transferred to cause a temperature change depends on the magnitude of the temperature change, the mass of the system, and the substance and phase involved

help me with this I only have one more
1156 g/L
= ________ kg/mL

Answers

The Answer is 0.001156.

To convert g/L to kg/mL, we need to divide the value of g/L by 1000. Therefore:
1156 g/L = 1.156 kg/L
Since 1 L is equal to 1000 mL, we can convert kg/L to kg/mL by dividing by 1000:
1.156 kg/L = 1.156/1000 kg/mL
1.156/1000 kg/mL = 0.001156 kg/mL
Therefore, 1156 g/L is equal to 0.001156 kg/mL.

A balloon is filled with 6.5 L of helium gas at 25oC and 1.0 atm. What volume will the balloon have when the temperature is lowered to -25oC and the pressure is increased to 1.5 atm?

Answers

honestly i have no clue. but u can

A weather balloon filled with hydrogen at 1 atm and -27^(h)C has volume equal to 1200 litres. On ascending, it reaches a place where temperture is -23^(h)C and pressure is 0.5 atm.

Human obtain electricity through fossil fuel, nuclear, solar, geothermal, wind, biomass, and hydroelectric power.

For at least two of these, explain ways that using this resource could pollute freshwater.

Answers

For fossil fuel: Oil spills and leaks during extraction or transport can pollute water sources.

For nuclear power: An uncontrolled nuclear reaction can result in widespread a contamination of water.

if would make the environment smoother and safer for all of the animals and save plants,trees,oil

List 2 similarities and differences between prokaryotic and eukaryotic cells.
Will give brain

Answers

Answer:

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus, and has other membrane-bound organelles that allow for compartmentalization of functions.The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.

-- please mark the brainliest and click the thanks button if correct :)

Answer:prokaryotes:no nucleus,cell wall and cell membrane

eukaryotic:has nucleus,and endoplasmic reticulum

Explanation:

If a substance has a density of 19 g/cm3, then what is the mass of 8 cm3 of this substance?

Answers

The mass is 2.375 grams

The mass is 3.375 grams

During digestion, what happens in the stomach?

A. All food molecules are broken down into smaller molecules by chemical reactions.

B. Some types of food molecules are broken down into smaller molecules by chemical reactions.

C. Water in the food passes into the blood and travels to other organs where it is used.

D. Food passes into the blood and travels to other organs where it is used in various reactions.

Answers

Answer:

Explanation:

Food is digested in the stomach for several hours. During this time, a stomach enzyme called pepsin breaks down most of the protein in the food. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones.

Answer:

Explanation:

I WILL GIVE YOU BRAINLIST PLS DOOOOOO
Which of these is a characteristic of index fossils?

Found in the topmost rock layer

Found in many layers of the same rock

Have already established relative age

Are limited to a particular geographic location

Answers

Answer: It is the third one.

Explanation:

An index fossil is something that a human can estimate the age of the fossil by looking at it.

The answer is the third one.

Index fossils are distinct in nature and recognisable. It is also widely present across the world. It is abundant and found everywhere.

You may think of changes in climate occurring as you go north or south. This climber stayed at the same latitude and went up. What explains the difference in temperature and climate between the top and bottom of Mt. Kilimanjaro? Please explain in 3-5 sentences thank you for 81 points

Answers

Answer: I'm not really sure but I think its dew to the different heights and tempura going up and down and the flow of wind.

Explanation:

Answer:

Mountains make it possible for snow to be found at the equator. Why does the temperature become colder the higher up a Mountain? Generally the climate on mountains get progressively colder with increased altitude (the higher up you go).

Explanation:

im not very good with science and i just need help with this assignment please

Answers

Answer:

Hey,

So what you would do here is first choose a biome, such as the desert for example, then choose an organism that lives there, or an animal. Then think of what it is like where it lives, is it dry, cold, windy, and so force, just describing the place by its looks and climate. How would this population increase, maybe it would be if there was suddenly more food there for them, or if their ecosystem got better for them to live, then, if they populated more, how would that affect the ecosystem. Maybe some animals would die off more, or some would have to much food. Like what if the fly population suddenly doubled, for example, how would that affect the ecosystem? Now what would happen if that organism was removed? If flies were removed, spiders and a lot of other organisms would not have food, and some organisms would overpopulate because nothing would eat them. That is just an example.

Explanation:

I hope this helps, sorry if not. Have a great day!

Biome: Tropical Rainforest

Organism: Jaguar

1. Jaguars live in a range of habitats, including arid scrubland, thick tropical forests, swamps, coastal mangroves, lowland river valleys, grasslands, and mixed-conifer forests. They gravitate toward areas near rivers and streams.

2. Habitat loss, wildlife trafficking, collisions with vehicles, and retaliatory killings by landowners and ranchers who fear that jaguars will kill their livestock have significantly lowered the population numbers of jaguars and threaten them with eventual extinction.

3. If jaguars were to go extinct, the number of these animals would perhaps increase, which might change the current ecosystem, from what it is now, to a new ecosystem that will adjust to the species left.

Biome 2: Desert

Organism: Camel

1. No matter the type, camels are usually found in the desert, prairie or steppe. Though many people think that camels only live in hot climates, they do well in temperature ranges from 20 degrees F (minus 29 degrees.

2. The sudden increase in camel populations could be also related to massive import of live animals. The Arabian Peninsula countries are among the main camel importing countries.

3. A mob of feral camels moves across arid land in the Australian Outback. The animals, introduced to the area in the 1800s, are causing enormous damage to the ecosystem. ... Camels also damage salt lake ecosystems, pollute waterholes, and destabilise desert dunes, which can lead to erosion. Meaning There would be less damage to the ecosystem.

*I’m confused? Pls help, it’s due tmr*
Modeling Tool: Two Samples at the Atomic Scale
Goal: Create a model that represents a repeating group of atoms that could make up sample 2.

Answers

Answer:

PENTANE

Explanation:

The answer on top is correct its pentane, a quick search will show you the structure, sadly i could t find one that looks like yours on the left so id just suggest from the info from the structures put the appropriate amount of carbon in the middle and have the hydrogen surround it. Good luck with your home work

How to work out the relative mass of potassium? What is the calculation? ( explained very easily )

Answers

Answer:

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Relative Atomic Mass = Mass of one atom
———————————
(1/12)th Mass of one C12 atom

What does it mean when a material can reflect light?

Answers

Answer:

Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. This is called specular reflection. Light reflects from a smooth surface at the same angle as it hits the

Explanation:

pls follow me if this truely helped u

Reflection is when light bounces off an object.if the surface is smooth and shiny ,like glass water or polished metal the light reflect at the same surface at the same angel it hits the surface

Complete the sentences to describe the structure of DNA. The shape of the DNA molecule is called a double . The backbone of DNA is made of molecules and phosphate molecules. The "rungs" of DNA are made of .

Answers

Answer:

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.

The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people. The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.

DNA bases pair up with each other, A with T and C with G, to form units called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix. The structure of the double helix is somewhat like a ladder, with the base pairs forming the ladder’s rungs and the sugar and phosphate molecules forming the vertical sidepieces of the ladder.

An important property of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases. This is critical when cells divide because each new cell needs to have an exact copy of the DNA present in the old cell.

DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.

The National Human Genome Research Institute (NHGRI), a part of the National Institutes of Health (NIH), provides a fact sheet Deoxyribonucleic Acid (DNA) that gives an introduction to this molecule.

StatedClearly offers a video introduction to DNA and how it works.

The New Genetics, a publication of the National Institute of General Medical Sciences, part of the NIH, discusses the structure of DNA and how it was discovered.

A basic explanation and illustration of DNA can be found on Arizona State University's "Ask a Biologist" website.

The Virtual Genetics Education Centre, created by the University of Leicester, offers additional information on DNA, genes, and chromosomes.

An overview of mitochondrial DNA is available from the Neuromuscular Disease Center at Washington University in St. Louis.

The shape of the DNA molecule is called a double helix. The backbone of DNA is made of sugar molecules and phosphate molecules. The "rungs" of DNA are made of four nitrogen bases that are adenine, thymine, guanine, cytosine.

What is DNA ?

The molecule found inside cells that contain the genetic information necessary for an organism's development and function. DNA molecules enable this information to be passed down from generation to generation.

DNA is made up of a series of molecules known as nucleotides. A nitrogen base, a sugar group, and a phosphate group are all present in each nucleotide. Adenine (A), Thymine (T), Guanine (G), and Cytosine (C) are the four nitrogen bases that can be found in DNA (C). There are billions of DNA bases in human DNA.

It stores instructions for the production of larger molecules known as proteins. These instructions are stored within each of your cells and are distributed across 46 long structures known as chromosomes.

Thus, chromosomes are composed of thousands of shorter DNA segments known as genes.

To learn more about the DNA, follow the link;

https://brainly.com/question/264225

#SPJ3

Two plant reproductive parts are described below.

Part 1: The tip of the female reproductive part that receives pollen from the stamen
Part 2: The male reproductive part that produces pollen

Which statement is true about the parts?

Part 1 is the stamen and Part 2 is the pistil.

Part 1 is the stigma and Part 2 is the ovule.

Part 1 is the ovule and Part 2 is the stigma.

Part 1 is the stigma and Part 2 is the stamen.

Answers

Stigma

Stamen so the last one is correct

Answer:

Stigma and stamen

Explanation:

Part one stigma and Part two stakes

Hope this helps:) Have a great day.

Please give brainliest if could

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