Chemistry Middle School

A car traveling around a corner at 18 meters per second is accelerating because it is changing its

1. mass.
2. speed.
3. direction.
4.displacement.

Answers

Answer 1

Answer:

18 mass speed direction displacement

Explanation:

18 meters per second is 18/60 =0.3

Related Questions

Identify each picture.
Answer Choices are in attachment.

Answers

Where are the answer choices

300 g of requires 30000 J of thermal energy to raise the temperature from 25 °C to 85 °C, what is the heat capacity of water? ANSWER ASAP PLEASE

Answers

I am not sure abt my answer. Did it in a rush. Pls correct me if im wrong

According to the concept of specific heat capacity, the heat capacity of water is 1666.67 J/Kg°C.

What is specific heat capacity?

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT

Substitution of values in the above equation, c=30000/0.3×(85-25)

c=1666.67 J/kg°C

Thus, the heat capacity of water is 1666.67 J/Kg°C.

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Describe the chemical reaction based on the chemical equation below. Also, explain whether the equation is balanced.

Answers

I don't see any chemical Equation

(Mark as Brainiest)

Answer:u dont have no picture ofbit u need to show us whst it is

Explanation:

Ong ohoje is glitch ant type hate when it do thsi

Please help, I’ll fr give 5 stars and Brainliest ;-;

Answers

Omg what grade are you in lol
i think the average is 1,450 but i might be wrong, mainly because the lowest point is 100 and the highest point is 2,800 which makes the average 1,450

What is the temperature range on the moon?

Answers

Answer: Daytime temperatures near the lunar equator reach a boiling 250 degrees Fahrenheit (120° C, 400 K), while nighttime temperatures get to a chilly -208 degrees Fahrenheit (-130° C, 140 K).

Hey Guys... I need help again...
Having freckles (F) is dominant over not having freckles (f). A parent with freckles is crossed with a parent without freckles. The Punnett square shows the possible genotypes of the offspring.


What is the genotype of each square?

A: FF Ff ff

B: FF Ff ff

C: FF Ff ff

D: FF Ff ff

Answers

Answer:

A: Ff

B: ff

C: Ff

D: ff

Explanation:

You basically look at the box it's asking for, let's use A as an example. On the top where the A column is there's F, so that's one of the thingys I forgot what they're called. Next look at the row of A, and there's f. Put the 2 together and you get Ff. Reminder that any uppercase ones come first.

The answer is
A=Ff
B=ff
C=Ff
D=ff

Imagine that the moon’s orbit wasn’t elliptical and it that it did not orbit the earth at a 5 degree angle. How would this change the predictability of an eclipse happening every month?

Answers

Answer:

Without the tilt, lunar eclipse will happen every month.

Lunar eclipse will happen each month, because of this.

Two cars are moving with the same speed. The VELOCITY of both cars will be the same if the cars are moving in:

1. circles.
2. parallel paths.
3. straight lines.
4. the same direction.

Answers

Answer:

4. the same direction

Explanation:

they would have the same speed adn the same direction.

Velocity is speed+direction

Yea I think it depends on the direction the cars are going!!

Which definition is correct?

a physical change creates a new substance because bonds are broken or formed
a physical change can happen without changing any characteristics of the substance
a chemical change occurs when the substance remains the same but the shape, or other physical characteristics change
a chemical change produces a new substance by breaking and forming new bonds

Answers

Answer:

last one is correct

Explanation:

bcoz when a reaction takes place there is the formation of new products with the help of old one .

Speed is defined as the distance an object travels per unit of time. Which TYPE of speed is observed when you look at the speedometer of a car?

Question 7 options:

A)
Constant Speed
B)
Instantaneous Speed
C)
Average Speed

Answers

B.) Instantaneous speed because the speedometer shows how fast you are going at that giving time .
The answers is B because of the speedometer

Example of Scientific question?

Answers

Explanation:

how to understand the difference between acid and base

A good scientific question builds on what you already know. For example: “Will fertilizer make grass grow greener?” is not as good as “What types of fertilizer will make grass grow greener?” 4. A good scientific question, when answered, leads to other good questions

Based on your knowledge of how the greenhouse effect works, why does the level of carbon dioxide affect the global temperature?
This is for science, I need it in my own words.
I will give brainless.

Answers

Answer:

bruh

Explanation:

The greenhouse effect traps carbon dioxide

Identify the following as examples of abiotic or biotic factors. Mark “A” for abiotic factors or “B” for biotic factors

_________Climate

_________Grass

_________Seaweed

_________Soil

_________Coyote

_________Altitude

_________Precipitation

_________Termite

_________Spider

_________Sunlight

Answers

Answer:

Explanation:

Climate - Abiotic

Grass - Biotic

Seaweed - Biotic

Soil - Abiotic

Coyote - Biotic

Altitude - Abiotic

Precipitation - Abiotic

Termite - Biotic

Spider - Biotic

Sunlight - Abiotic

A
B
B
A
B
A
A
B
B
A
(Those are the answers)

Brainliest answer please im not wasting my points for no reason please this is the last one and then im done please thank you
What do the solid lines on the topographic map represent?


A. changes in rock types

B. lines of equal pressure

C. lines of equal elevation

D. changes in vegetation

Answers

Answer: I think it’s C

Explanation:

Its B Im Pretty Sure

What is the center of a plant cell? The actual question is what’s the center of an onions root tip?

Answers

The center of a plant cell is a nucleus!
A nucleus! That is where the plants DNA is stored :)

Hammer orchids are plants with flowers that are highly modified to resemble a female thynnid wasp (i.e., a wasp of the Thynnidae family) and can only be pollinated by thynnid wasps. Female thynnid wasps cannot fly, but males can. When the female is prepared to mate, she will climb up a tall plant or a blade of grass and wait for a male to appear. Males will pick up the female from her perch and mate with her in flight.


Given this information, in three to five sentences, describe these details:

one other feature of the hammer orchid that could attract its pollinator
how the orchid’s flower adaptation could lead to pollination
why you believe a plant would have more reproductive success with either a specialized pollinator or multiple pollinators


i need help!! y'all wht should i put?

Answers

Answer:

in side

Explanation:

Ponds, streams, and forests are all examples of which ecology term? A: Niches B: Populations C: Ecosystems D: Producers

Answers

Answer:

Ecosystems

Explanation:

C is the answer ecosystems

What is meant by thermal heat capacity?

Answers

Answer:

The quantity of heat necessary to produce a unit change of temperature and a unit mass of a material.

Answer:

thermal capacity is defined as the quantity of heat necessary to produced a unit change of temperature in a unit Mass of material

When we talk about substances dissolving we usually follow the rule " like disssolves like". What does that mean? (selct TWO correct answers)


Nonpolar molecules will dissolve other nonpolar molecules


Nonpolar molecules will dissolve polar molecules


Polar molecules will dissolve nonpolar molecules


Polar molecules will dissolve other polar molecules

Answers

Answer:

hope it helps

Explanation:

Polar molecules will dissolve nonpolar molecules

Polar molecules will dissolve other polar molecules

What is the connection between the solar system and the Earth

Answers

earth is part of the solar system..?
The earth is located in the solar system.

Get ready for the wave of screenshots :>

Answers

Answer:

okay let me know when i can help, ill be happy too help

Screenshots of what? Ooga booga snooga

Yikes ;-;
I’m stuck- Help-

Answers

Answer:

I'm pretty sure this is potential energy

Explanation:

Potential energy is energy held by an object when its let go its kinetic energy

The correct answer is potential energy.

Potential energy is the point where the object is still and has no type of movement. The energy remains constant until ready to be gained or lost.

Hope this helps!

HELP ASAP!!!!!! please

Answers

Answer:

F2 gg

Explanation:

What do you understand by Biological nitrogen fixation? PLEASE ANSWER RN

Answers

Answer: Because it is the principal source of the nitrogen in the soil, nitrogen that plants need to grow, nitrogen fixation is one of the most important biochemical processes on Earth. Nitrogen within living organisms is eventually decomposed and converted to atmospheric nitrogen.

Answer: Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia or related nitrogenous compounds in soil.

Explanation:

The imagine shows the atomic arrangements of four different substances.

Which are compounds and why?

Answers

The answer would be water , carbon dioxide and methane because they all contain more than one element.

Water-H2O
Carbon Dioxide-CO2
Methane-CH4
water,carbon dioxide and methane

What is the mass of the ethyl alcohol that exactly fills a 400.0 mL container? The density of ethyl alcohol is 0.789 g/mL.

Answers

Answer:

g = (0.789 g/mL) (200.0 mL) = 158

The mass of ethyl alcohol that exactly fills 400 ml of container is 315.6 grams.

How is mass related to density?

Formula of density is given as , density =mass/volume

∴mass=density×volume

From the formula it is evident that density and mass are directly proportional while density and volume are inversely proportional.

From the given data, volume=400 ml and density =0.789 g/ml

∴by the formula,mass=density×volume

mass=0.789×400

mass=315.6 g

Mass and volume are extensive properties that depend on the amount of substance while density is an intensive property and does not depend on amount of substance.

Intensive properties  are properties which are independent,wherein size of particles does not change.These properties cannot be easily computed and are not easily identifiable.

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which two statements are true for both compounds and mixtures
A. Their particles are held together by chemical bonds
B. Their particles all have the same chemical formula
C. They are made up of more than one type of atom
D. They can be separated into two or more elements

Answers

the answer is C because both compounds and mixtures are made up of two or more substances
The answer is c since it OFCOURSE has many atoms

When citric acid reacts with baking soda, a salt, water and a gas are produced. What is the name of the gas?

a) carbon dioxide
b) oxygen
c) sodium citrate
d) water vapor

Answers

c sodium citrate is the the same

Answer:

The answer is A

Explanation:

FIRST TO ANSWER GETS 30 POINTS


Classify the following as physical, biological, applied science

1. Chemistry 7. Parasitology

2. Zoology 8. Volcanology

3. Engineering 9. Genetics

4. Metallurgy 10. Pasteurization

5. Medicine 11. Aviation

6. Microbiology 12. Bacteriology

Answers

Explanation:

Chemistry is physical

Zoology is biological

Engineering applied

Metallurgy applied

Medicine biological

Microbiology biological

Parasitology biological

Volcanology physical

Genetics biological

Pasteurisation biological

Aviation physical

Bacteriology biological

which of these pairs of atoms are isotopes
A: scandium-46, titanium-46
B: iron-56, sodium-24
C: chlorine-35, chlorine-37
D: sodium-24, magnesium-24

Answers

The answer is C, because isotopes are two or more of the same element with different atomic masses; so, in this case, the two chlorine atoms are the same molecules but they have different atomic masses, as the “35” and “37” say.

Taking into account the definition of isotopes, the correct answer is option C: chlorine-35, chlorine-37

First of all, all atoms are composed of a central nucleus in which there are positively charged particles, the protons, and neutrally charged particles, the neutrons, around which other negatively charged particles that are electrons move.

That is, atoms are made up of a nucleus (made up of protons and neutrons) and a shell made up of electrons.

On the other side, isotopes are atoms whose atomic nuclei have the same number of protons but different numbers of neutrons.

The atomic number (Z) indicates the total number of protons in the nucleus of a given atom, while the atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus.

So, in other words, each isotope of the same element has the same atomic number (Z) but each has a different mass number (A). This means that the different isotopes of the same atom differ from each other only by the number of neutrons. So if a neutron is added to an atom, it becomes an isotope of that chemical element.

So, in this case, the correct answer is option C: chlorine-35, chlorine-37, because the two chlorine atoms correspond to the same element but have different atomic masses, whose values ​​are 35 and 37.

Learn more:

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