Please help this is due tomorrow, I will give brainliest

Please Help This Is Due Tomorrow, I Will Give Brainliest

Answers

Answer 1

Answer:

both are chemical changes

Answer 2

Answer: both are chemical changes

Explanation:


Related Questions

In the rock cycle, where is the energy being released?



Group of answer choices

magma

magma to igneous

igneous to sedimentary

sedimentary to metamorphic

There's a picture of the rock cycle just so you know :)

Answers

Answer:

the two major sources of energy for the rock cycle are also shown; the sun provides energy for surface processes such as weathering, erosion, and transport, and the Earth's internal heat provides energy for processes like subduction, melting, and metamorphism.

Make a suggestion on how you will deal with the problem

Answers

Answer:

is it a research work?

Explanation:

if it is first u write about what is a climate what r due to climatic changes

Answer:

《<☆HOPE IT WILL HELP YOU 》>☆

Explanation:

Dealing with the problem by

Never lose your hope you're cofidance your power

Always take dlessing or suggeation from the elder or your parent

Please mark my ans as BRAIN LIST

Which statement describes the relative energy of the electrons in the shells of a calcium atom?

Answers

Answer:

An electron in the first shell has more energy than an electron in the second shell.

Explanation:

Give two differences between the properties of iron and sodium

Answers

Answer:

Iron have 26 atomic and sodium have 11 atomic

Explanation:

The sodium is a non-transition metal. Its melting point is low and boiling points and is a soft metal, whereas iron is a transition metal with very high melting and boiling points, It is a hard metal.

What is transition metal ?

The term transition metal is defined as any of various metallic elements such as chromium, iron, and nickel that have valence electrons in two shells instead of only one.

Between the s-block and p-block elements in the periodic table are transition metals. As a result, they are known as d-block elements.

Sodium is soft, has a much lower melting point than water, and reacts with it violently, producing heat and hydrogen or even exploding. Additionally, sodium and water react to create a hazardous compound.

Thus, these are difference between the properties of sodium and iron.

To learn more about transition element, follow the link;

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Using the image above, match A-G to their appropriate part of the periodic table. (If the image does not show, click on the link above for an alternative way to access the image.)
Question 5 options:
Metals
Period
Group/Family
Noble gases
Halogens
Metalloids
Nonmetals

1.
A

2.
B

3.
C

4.
D

5.
E

6.
F

7.
G

Answers

1. A ➡️ Metals

2. B ➡️ Metalloids

3. C ➡️ Non-metals

4. D- Column ➡️ Group/Family

5. E- Row ➡️ Period

6. F ➡️ Halogens

7. G ➡️ Noble gases

Explanation:

The Periodic Table is known to be an array of chemical elements that are organized in order of their increasing atomic number. That arrangement gives a recurring pattern known as the periodic law in their properties.

Periods are found in the horizontal rows (across) the periodic table, while groups are found in the vertical columns (down) the table.

The Periodic Table was discovered by D.I Mendeleev.

Which type of compounds are formed by ions that have opposite charges?
A. molecules
B. covalent
C. ionic
D. metallic

Answers

Answer:

c

Explanation:

if you need explanation, ask freely

Answer is c
Explanation: none

Explain why the name 1-propene is incorrect.what is the proper name for this molecule​

Answers

Answer:

Explanation:

Explain why the name 1-propene is incorrect what is the proper name for this molecule

The name 1-propene is incorrect because;

It is not necessary to indicate the position of the double bond. Whichever way you decide to flip it, the double bond will always be at the first carbon.

The proper name for this molecule is;

Propene

Propene otherwise known as propylene is simply propane with a double bond at the first carbon.

When we get to the alkenes where the naming of organic compounds becomes more complex, the numbering system is used to indicate the position of the bonds.

With propene, there are three carbon atoms and the double bond will always appear in between two of the carbon atoms.

So, it is not important to use numbers to show that the carbon is at the first carbon. This becomes necessary from the next compound, butene, where there are more carbons.

Learn more here:

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Make a suggestion on how you will deal with the problem..

Answers

Answer:

and the last name then select a City the solution if they are getting elimination method if I can tell u that is telling you about me to this email and delete this email and any attachments may contain confidential information and rupees hundred years ago the pair in the solution if I can tell you my story of my teacher not respond please ask me to this email and any attachments is intended only for the independence of Bangladesh and what is the correct answer is yes we have to come at your earliest convenience and what is the correct answer

Answer:

If you are asking to suggest a method to preserve the extinction of this species of pigeon then

1. Governments should derive a law that will prevent hunting of these pigeons.

2. These pigeons should be given a place in sanctuaries with hospitable habitat made available.

3. If someone sees a bird of this kind care should be taken not to harm it intentionally or accidentally.

4. Breeding this type of Birds should be Promoted to increase their number



(1) In an experiment for determining the density of water, the following results
were recorded.
-mass of an empty beaker = 65gm.
- mass of the beaker and water = 165gm.
the volume of water = 100Cm.
(Calculate the density of water)​

Answers

Given parameters:

mass of an empty beaker = 65gm

mass of the beaker and water = 165gm

volume of water = 100cm³

Unknown:

Density of water  = ?

Solution:

Density is the mass per unit volume of a substance;

           Density  = [tex]\frac{mass}{volume}[/tex]

To find the mass of the water ;

   Mass of water  = Mass of beaker and water - mass of an empty beaker

                            = 165g - 65g

                           = 100g

So input parameters and solve;

         Density  =  [tex]\frac{100g}{100cm^{3} }[/tex]  

         Density of the water in the beaker  = 1g/cm³

A little boy places an ice cube in his hot bowl of stew and then walks out of the room. When he returns, the ice cube is gone.
Based on the law of conservation of mass, what happened to the ice cube in the scenario?

a. The extreme temperature difference between the stew and the ice cube caused the ice cube's mass to be converted into energy.

b. The extreme temperature difference between the stew and the ice cube caused the stew's mass to destroy the ice cube's mass.

c. The extreme temperature difference between the stew and the ice cube caused the ice cube to change state while its mass remains the same or constant.

d. The extreme temperature difference between the stew and the ice cube caused the ice cube's mass to shrink to a barely noticeable amount.

Answers

Answer:

It's actually C

Explanation:

The Ice's mass was never destroyed, just converted therefore it would be C, which states the mass never disappeared, just changed to water.

which substance is more soluble sugar or flour why does sugar is soluble??​

Answers

Answer:

sugar

Explanation:

because sugar dissolves

in water, while flower    because it is insoluble

A wave hits a wall as shown. A brick wall with a green arrow pointing to the wall from below and right at a shallow angle. Another green arrow starts where the first arrow touched the wall and goes up and left at the same shallow angle. As the wave interacts with a wall, which kind of wave interaction is shown?

Answers

Answer:

A wave reflection interaction (reflected by the wall)

Explanation:

In a reflection, the propagating wave is bounced off the reflecting surface because the medium of the surface prevents the propagation of the wave through it, such that wave is redirected at an angle equal to the angle of incident on the reflecting surface

Reflection takes place with the different forms of waves, such as sound wave, water waves, and light wave

The objects around us are seen with the aid of reflection of light from a light source such that the reflected light enters our eyes after being reflected on the surface of the object, and the object is seen.

Answer:

reflection

Explanation:

its on edg.

Why is change good for an
ecosystem?

Answers

Answer:

it helps the area develop and help the animals adapt

Explanation:

im new so i hope this helps

which following is found in the nucleus of the atom​

Answers

Answer:

Protons and neutrons are found in the nucleus of an atom. They make up a majority of the mass of an atom. In fact, the mass number of an element is the sum of its protons and neutrons. Since protons have a positive charge and neutrons are neutral, the nucleus of an atom is electrically positive.

Explanation:

1. How many protons?
2. What is the atomic number?
3. What element is this?
4. How many neutrons?
5. What is the mass number?
6. What is the isotope?​

Answers

Answer:

1) 5 protons, 2) 5, 3) boron, 4) 6 Neutrons, 5) 10.811 ≈ 11, 6) Boron-9

If an astronomer was to look through a telescope and notice that a star's emitted light had a slightly red tint to it, compared to what the emitted light should be. What would that mean about that star?

Answers

Answer:

In the chapters that follow, we will provide the temperature of the stars we are describing, and this section tells you how those temperatures are determined from the colors of light the stars give off. Hubble Space Telescope image of the Sagittarius Star Cloud. The image shows many stars of various colors, white, blue, red and yellow spread over a black background. The most common star colors in this image are red and yellow. Figure 1: Sagittarius Star Cloud. This image, which was taken by the Hubble Space Telescope, shows stars in the direction toward the center of the Milky Way Galaxy. The bright stars glitter like colored jewels on a black velvet background. The color of a star indicates its temperature. Blue-white stars are much hotter than the Sun, whereas red stars are cooler. On average, the stars in this field are at a distance of about 25,000 light-years (which means it takes light 25,000 years to traverse the distance from them to us) and the width of the field is about 13.3 light-years. (credit: Hubble Heritage Team (AURA/STScI/NASA))

Color and Temperature

As we learned in The Electromagnetic Spectrum section, Wien’s law relates stellar color to stellar temperature. Blue colors dominate the visible light output of very hot stars (with much additional radiation in the ultraviolet). On the other hand, cool stars emit most of their visible light energy at red wavelengths (with more radiation coming off in the infrared) (Table 1). The color of a star therefore provides a measure of its intrinsic or true surface temperature (apart from the effects of reddening by interstellar dust, which will be discussed in Between the Stars: Gas and Dust in Space). Color does not depend on the distance to the object. This should be familiar to you from everyday experience. The color of a traffic signal, for example, appears the same no matter how far away it is. If we could somehow take a star, observe it, and then move it much farther away, its apparent brightness (magnitude) would change. But this change in brightness is the same for all wavelengths, and so its color would remain the same. Table 1. Example Star Colors and Corresponding Approximate Temperatures

Star Color Approximate Temperature Example

Blue 25,000 K Spica

White 10,000 K Vega

Yellow 6000 K Sun

Orange 4000 K Aldebaran

Red 3000 K Betelgeuse

Go to this interactive simulation from the University of Colorado to see the color of a star changing as the temperature is changed. The hottest stars have temperatures of over 40,000 K, and the coolest stars have temperatures of about 2000 K. Our Sun’s surface temperature is about 6000 K; its peak wavelength color is a slightly greenish-yellow. In space, the Sun would look white, shining with about equal amounts of reddish and bluish wavelengths of light. It looks somewhat yellow as seen from Earth’s surface because our planet’s nitrogen molecules scatter some of the shorter (i.e., blue) wavelengths out of the beams of sunlight that reach us, leaving more long wavelength light behind. This also explains why the sky is blue: the blue sky is sunlight scattered by Earth’s atmosphere.

Color Indices

In order to specify the exact color of a star, astronomers normally measure a star’s apparent brightness through filters, each of which transmits only the light from a particular narrow band of wavelengths (colors). A crude example of a filter in everyday life is a green-colored, plastic, soft drink bottle, which, when held in front of your eyes, lets only the green colors of light through. One commonly used set of filters in astronomy measures stellar brightness at three wavelengths corresponding to ultraviolet, blue, and yellow light. The filters are named: U (ultraviolet), B (blue), and V (visual, for yellow). These filters transmit light near the wavelengths of 360 nanometers (nm), 420 nm, and 540 nm, respectively. The brightness measured through each filter is usually expressed in magnitudes. The difference between any two of these magnitudes—say, between the blue and the visual magnitudes (B–V)—is called a color index. By agreement among astronomers, the ultraviolet, blue, and visual magnitudes of the UBV system are adjusted to give a color index of 0 to a star with a surface temperature of about 10,000 K, such as Vega. The B–V color indexes of stars range from −0.4 for the bluest stars, with temperatures of about 40,000 K, to +2.0 for the reddest stars, with temperatures of about 2000 K. The B–V index for the Sun is about +0.65. Note that, by convention, the B–V index is always the “bluer” minus the “redder” color. Why use a color index if it ultimately implies temperature? Because the brightness of a star through a filter is what astronomers actually measure, and we are always more comfortable when our statements have to do with measurable quantities.

Explanation:yw :P

When ammonium chloride is dissolved in water, the beaker gets cold. Which type of reaction does this describe
O exothermic
O endothermic
O both exothermic and endothermic
O neither exothermic nor endothermic

Answers

Answer:

B

Explanation:

i think with exothermic reactions heat is released

this is what i looked up

hope this helps i took chem last year and think this is what i learned

Considering the definition of exothermic and endothermic reactions, the correct answer is second option: the reaction is endothermic.

Energy and chemical reactions

Energy is the ability to do work or to produce heat.

Remembering that chemical reactions involve a reorganization of atoms between substances with breaking or formation of chemical bonds, this formation or breaking of chemical bonds is accompanied by changes in the energy of the system.

Exothermic reactions

Chemical reactions that release heat are called exothermic. That is, an exothermic reaction is one where energy flows out of the system.

So, at room temperature, the heat released by a chemical reaction is enough to cause a rise in temperature.

Endothermic reactions

An endothermic reaction is one that requires heat to take place. In other words, a chemical reaction is endothermic when it absorbs energy from the environment.

In this case, the heat is transferred from the outside to the inside of the system. By absorbing heat, the effect of an endothermic reaction is to lower the temperature.

This case

When ammonium chloride is dissolved in water, the beaker gets cold. That means the system is absorbing heat from the surrounding and the temperature does down.

So, the correct answer is second option: the reaction is endothermic.

Learn more about endothermic and exothermic reactions:

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What is the buoyancy force on a 15 g object which displaces 60 mL of water? (Remember to change mL of water to grams and grams to kg)

25 N
0.59 N
900 N
0.25 N

Answers

Answer:

0.25

Explanation:

Answer:

.59

Explanation:

What converts electric energy to radiant energy and thermal energy?


Answers

Answer:

Many things, but i think a toaster...

Explanation:

Who performed the oil-drop experiment?
O A. Albert Einstein
B. Robert Millikan
O C. J. J. Thomson
D. Niels Bohr

Answers

Answer: Robert Millikan

Explanation: Robert Millikan was the first person to perform the oil drop experiment. It was done many centuries ago. Hope this helps you!

PLEASE ANSWER!
Why are fresh vegetables sprinkled with water at the grocery store (you should use what you learned to infer the answer to this)? Use the following terms: osmosis, diffusion, passive transport, cell membrane and equilibrium in your answer.

Answers

Answer:

They do this so that water will diffuse into the vegetables and keep them plump and allow them to keep their look of freshness. 7. Roads are sometimes salted to melt ice.

Explanation:

PLZ ANSWER WILL GIVE BRAINLIEST
Given the data shown, what two substances react with vinegar? Hint: (+) = a reaction occurred, (-) = no reaction

Gelatin and baking powder
Gelatin and baking soda
Salt and corn starch
Baking powder and baking soda

Answers

Answer:

baking powder and baking soda

Explanation:

I know this from prior knowledge, also the graph shows the two with plus signs on vinegar, which means they both react to it. :)

Baking powder and baking soda

On the table they both have a "+" meaning a reaciton has occured.

Hope this helps, brainliest pls! :)

PLS HELP:)Which situation will cause a stationary object to start moving?
A. A net force greater than 0
B. Balanced forces
C. A net force equal to 0
D. Two forces that cancel each other out

Answers

A. A net force greater than 0

When the earth formed, do you think it was the way you see it now? Explain your answer.

Answers

Answer:

No

Explanation:

I do not know

Explanation:

No because when it was formed it was a rocky lava wasteland

please help me im so lost! ​

Answers

Answer:

An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. ... The nucleus of an atom contains protons and neutrons.

Explanation:

i'm smart you are too in your own way.

help please i would really appreciate it thanks

Answers

here the answer is it stops.

indicate whether the statement is true or false the ripening of a banana is an example of a chemical change ​

Answers

Answer:

True. Ripening of a banana is a chemical change

In humans, the allele for curly hair and the allele for straight hair show incomplete dominance the offspring of a curly haired person and a straight haired person will have A) Curly hair B) straight hair C) wavy hair D) Curly and straight hair

Answers

a
eplanation
i meannn they both had curly hair

Answer:

A

Explanation:

Curly Hair

Pls help me solve this and I will mark you the Brainiest

Answers

Answer:

b

Explanation:

plz mark brailest

How much does a football weigh?

Answers

Answer:

16 oz

Explanation:

please mark as brainlist answers

Other Questions
ATP and photovoltaic cells are similar because A. they are both key components of plant cells. B. they both produce chemical and electrical energy. C. they are both key components of solar panels. D. they both use energy from the sun to separate electrons from atoms. Helppppp with angles Chase lives 2 3/5 blocks west of Ellie. They draw a number line to model the situation. Because Ellie lives 3 1/2 blocks east from the school, they give her house the coordinates 3 1/2. Chase incorrectly claims that the coordinate of his house is 6 1/10. a. What is the correct coordinate of Chase's house? b. What is Chase's likely error? A. He subtracted 3 1/2 from the coordinate from Ellie's house. B. He added 3 1/2 to the coordinate for Ellie's house. C. He subtracted 2 3/5 from Ellie's house. D. He added 2 3/5 to the coordinates for Ellie's house. Please help me it would really be the best The measurement 0.003095 gram, rounded to three significant figures, isexpressed as 0.003100.003090.0030.003096 Martina opens a savings account with an initial deposit and makes no other deposits or withdrawals. She earns interest on her initial deposit. The total amount of money in her savings account at the end of each year is represented by the sequence shown.100, 105, 110.25, ...Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year?A. f(n + 1) = f(n) + 5B. f(n + 1) = 5f(n) C. f(n + 1) = 1.05f(n) D. f(n + 1) = 0.05f(n) On a coordinate plane, a line goes through points (negative 4, 0) and (0, 4.5).What is the x-intercept? what group took over Russia during ww1?A.) bolsheviks B.) socialists C.) fascistsD.) the duma Which of the following is a noun?O A. PurpleO B. TheC. SlowlyO D. Girl What my faith (catholic) means to you if set A. have numbers 5, 25, 15, and 35 can you describe set A ? Write 9 in scientific notation I have to find two words for an acrostic poem and its about atmosphere and I need a word that starts with R and E? What percentage of the US economy does the food services industry provide?OA.1 percentB.4 percent10 percentD.25 percent What is the product of (0.9)(2.4)?3.32.162.163.3 Jessica had 167 dollars to spend on 6 books. After buying them she had 17 dollars. How much did each book cost ? HELP ME PLS ITS DUE SOON A plumber charges $75 for a service call, plus a $40 per hour. If the plumber's bill was $235, then how many hours was he there? Which are characteristics of Sportsmans Paradise? Check all that apply. The area is known for its excellent ocean fishing. There are many rolling hills, forests, and lakes. Many people who settled here were Anglo-Saxon or Celtic.The region is located in the southern part of the state. The region is known for its many recreational activities. What is the difference between US history and global history? Which of the following tend to be made up of a relatively small number of people who interact frequently face-to-facea. Secondary groupb. Bureaucratic organizationc. Primary groupd. All of the above