Chemistry Middle School

Unbalanced forces -

A
cause the motion of an object to change
B
cancel each other out
C
allow an object to remain at rest
D
are always greater than the force of gravity

Answers

Answer 1
The answer is A have a good day
Answer 2
I believe that the answer is A

Related Questions

Which change of state is shown in the model?
A. Condensation
B. Boiling
C. Sublimination
D. Freezing​

Which change of state is shown in the model?A. CondensationB. BoilingC. SubliminationD. Freezing

Answers

Answer:

D

Explanation:

D freezing
All the molecules are tight together

Morse code was invented and first used before the invention of the telephone. Explain how using electronic pulses to send messages in Morse code would have been an advantage over using your voice.

Answers

Answer:

Using electronic pulses to send messages in morse code would be an advantage over using your voice because not everyone could understand morse code. If you wanted to send a message and didn't want someone to overhear you say it you could use morse code to send the message quietly. Seeing that everyone doesn't know morse code you could send almost secret messages using it.

Explanation:

ANSWER-

Using electronic pulses to send messages in Morse code was an advantage over using voice because it allowed for long-distance communication without the need for a physical connection, such as a telephone line. The signals could be sent over telegraph wires or even through air, making communication faster and more efficient. Additionally, Morse code could be sent silently, making it ideal for covert communication.

Descride Three ways that people can conserve natural resources?

Answers

Answer:

1. Reuse things like cups, towels, cloths, etc.

2. Plant a tree. (Trees and other organic energy sources are traditional sources of renewable energy.)

3. When using natural resources, only use the necessary amount so you're not wasting any.

Hope this helps!!

1. don’t waste things! turn off lights when you leave the house, don’t leave the water running while brushing your teeth.

2. do something for the environment! plant some flowers or pick up trash when you see it.

3.

help. need help. dying inside, help.

help. need help. dying inside, help.

Answers

the awnser is d

Explanation
Electron = tiny mass
Proton = Large Mass
Neutron = Large Mass
It’s more complicated but that’s how I got the Awnser
The answer would be d!

these days cloths made out of a mixture of synthetic fiber and natural fibers are more popular than those made purly out of synthetic fiber. Discuss the reason for this

Answers

Answer: Clothes purely made of synthetic fibers are not comfortable in a hot and humid environment as they don't have the property to absorb water or sweat quickly so their water-resistant property makes them unsuitable for hot humid environment .

Explanation:

Mixing of synthetic fiber and natural fibers enhances the properties such as strength, elasticity, and ease of ironing and washing. Generally in hot environments it is preferred to wear a mixture of synthetic and natural fiber than wearing only clothes made from synthetic fiber .

Moreover, mixing synthetic fibres with natural fibres enhances their properties, such as strength, elasticity and ease of washing and ironing. Hence, these days clothes made out of a mixture of synthetic fibres and natural fibres are more popular than those made purely out of synthetic fibres.

SCIENCE!! i need help on the question in the middle please!!!

SCIENCE!! i need help on the question in the middle please!!!

Answers

The earth would be the answer because it has the most mass and is heavier than all of the other objects
The earth is the answer

What part of the plant is fertilized with pollen to produce seeds?
Leaf

Ovule

Pistil

Stem

Answers

Answer:

Ovule

Explanation:

ovule is the answer

There are 2 main types of _______. One is a _______, where electrons are shared between atoms. The other is an _______, where one atom loses an electron to become a _______ charged ion, and the other atom gains the elctron to become a _________ charged ion.

Answers

Hello..!

There are 2 main types of ions one is an atom where the electrons are shared between the atoms. the other is an electron where one atom loses an electron to become a neutral in a charged ion, and the other atom gains the electron to become a charged lon anion.

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Ions with a positive charge are known as cations. Those that are negatively charged are called anions.

¿Doubts? in the comments Greetings.

The two main types of bonds formed between atoms are ionic bonds and covalent bonds. An ionic bond is formed when one atom accepts or donates one or more of its valence electrons to another atom. A covalent bond is formed when atoms share valence electrons.

Organize it fossil

If somebody knows the answer please tell me

Organize it fossilIf somebody knows the answer please tell me

Answers

Answer:Carbon-14 dating is  second column tho

Explanation:So i remember doing this in 5th grade at my school so if u send me ur email i. can try send you my labs i hate doing them.

Select all that apply.

Which of the following equilibria will shift to the left when the temperature is increased? [ΔH (kJ/mol) values are given in parentheses.]

(a) S + H2 ⇌ H2S ΔH (−20)


(b) C + H2O ⇌ CO + H2 ΔH (131)


(c) H2 + CO2 ⇌ H2O + CO ΔH (41)


(d) MgO + CO2 ⇌ MgCO3 ΔH (−117)


(e) 2CO + O2 ⇌ 2CO2 ΔH (−566)

Answers

I think it is A and C!

The equilibrium of the reaction (a), (d), and (e) will shift to the left side when the temperature is increased.

What is equilibrium law?      

Equilibrium law states that if the dynamic equilibrium gets disturbed by changing the conditions such as temperature, pressure, etc., then to reestablish equilibrium, the position of equilibrium will shift to counteract the change.

As we know that if the change of enthalpy (ΔH) is negative then the reaction is exothermic in nature and if the change in the enthalpy is positive the reaction is endothermic in nature.

Therefore, the reaction (a), (d), and (e) are exothermic reactions, and the reaction (b) and (c) are endothermic reactions.

On increasing the temperature, if the forward reaction is exothermic. Then the equilibrium will shift to the reactant side or left so that excess heat will be absorbed in the backward reaction.

Therefore,  when the temperature is increased, the reaction (a), (d), and (e) will shift the equilibria to the left side.

Learn more about equilibrium law, here:

https://brainly.com/question/10567558

#SPJ2

hurryyyy
A student grows two different varieties of soybeans in the same temperature and lighting conditions. At the same time each week, the student gives each plant an equal amount of water. The student measures the height of each soybean plant once per week. The graph shows the results of the experiment.

hurryyyyA student grows two different varieties of soybeans in the same temperature and lighting conditions.

Answers

Answer: D) The plants grow at different rates because each soybean variety has a different set of genes.

Explanation:

Answer:

Answer is D

Explanation:

True or False

Low, gray, layered clouds that cover the sky and bring steady rain are nimbostratus clouds.

Answers

Answer:

true

Explanation:

it indicates a steady rain therefore true

true because no other cloud has that kind of experience

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.

Which statement about viruses is true? *

A virus has no moving parts.
Everything a virus needs is found on its surface and in the DNA it contains.
Viruses straddle the line between living and non-living organisms.
All of the above.

Answers

It would be All of above cause cells can live in non living and living organisms
All of the above because viruses are living and move from living organisms and non-living organisms.

Pls help with this question thx guys ur so kind
Whoever gets the answer gets it right then I'll give u a branily badge!! (u know what I mean).

Pls help with this question thx guys ur so kindWhoever gets the answer gets it right then I'll give u

Answers

Answer:

Cell

Explanation:

cells forms tissues, which forms organ that are parts of an organ system

***URGENT PLEASE**** Select all of the bases listed *
Bleach
NaOH
H2SO4
HCl
Ammonia
HF

(if you are confused COMMENT it please! I don't want to have to keep repeating because people are answering that they are confused.

Answers

Answer:

Am i too late??

Explanation:

Which of the following is correct?

A reactants <- products
B reactants products
C reactants →p products
D reactants = products

Answers

Answer:c..................

answer
c
explanation

which chemical process is illustrated below?

which chemical process is illustrated below?

Answers

Answer:

I believe it is D, Dehydration synthesis of amino acids to form a dipeptide

I would also say it is D! Good luck!

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

Answers

Answer:

39

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

A cube has a mass of 9 grams and each side is 3 cm3. What is the density of the sample?

a.0.33 g/mL

b.36g/mL

c.3g/mLd.18g/mL


Im begging someone to help, Ill mark brainlist!!!

Answers

Answer:

a. 0.33 g/mL

Explanation:

We already know what the mass is (9 grams) so we have to find the volume of the cube next.

Volume = lwh

             =(3)(3(3)

             = 27

To find density, you have to find mass/volume

density = mass /volume

density = 9 g /27 mL             (cm 3 and mL are basically the same thing)

            = 0.33 g/mL

0.33 g/ml is the correct answer

pls help me…………………..

pls help me..

Answers

Answer:

Potential,Kinetic

Explanation:

When an object is higher up on a surface it has more Gravitational Potential Energy whilst when an object is lower down but moving fast it has more kinetic energy. So when the object moves down the ramp energy is transferred from the gravitational potential energy store to the kinetic energy store.

And the answer is potential,kinetic

How does the Gulf Stream affect the climate of northern eroupe

Answers

Answer:

The effect of the Gulf stream is that it may change the climate of northern Europe as it may make it warmer. The Gulf Stream may change the climatic condition of the Northern Europe area as it will make the environment warmer.

_____________

Hope this helps! c:

The gulf stream affects the climate of northern europe possibly because of its temperatures

How would you measure 20 grams of salt? Describe how you did this.


(this is due by tmr so someone please help!)

Answers

Answer:

I would just find a measuring cup and do it that way it's the easiest way

use a weighing scale. Put a bowl or cup on the weighing scale take off the weight of it- set weight to 0, and then put in the salt nd measure up to 20g

What are the first few items you should evaluate when reading a graph”?

Answers

Answer:

punctuation, and if it makes sense

title, axes, increments, labels, and scale

How do we know that Mars has strong winds on its surface?
there are small whirlwinds called dust devils
its atmosphere is made up of mostly carbon dioxide
space probes have been unable to approach it
the surface has a red hue caused by rust

Answers

Answer:

its atmosphere is made up of mostly carbon dioxide

Explanation:

What was the low temperature for hurricane Katrina?

Answers

Answer: 90 degrees F

Explanation:

The temperature was 90 F (32 C)

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.

help me fill this page with the right answer please (17 lines minimum please)

help me fill this page with the right answer please (17 lines minimum please)

Answers

I am water moleculeI have to first bear the heat of sun .Then the heat evaporates me into vapours I am send to the atmosphere with my brothersThen I have to form clouds Then precipitation or density of our brothers increasesWe keep increasingThen once a time comes when we are full We then condensed down to earthWe comes back in the form of rainThen either we are stored in some place or undergroundThen people collects us from different places like pond,river etc
Hey Lenny lately I’ve been having a rough time in the water cycle. It all started when I was chilling in my favorite location the “glaciars” and suddenly the sun turned me into liquid form. Next thing I know I am hurdling down a river straight into a massive lake. Personally this is my least favorite stage of the water cycle because of kids and bacteria that lurk in the water, very scary things. I didn’t stop at the lake very long, and instead sunk into the soil in a process called collection so I could become ground water. Underground reservoir’s are much more peaceful then lakes and I wanted to stay there. However I was forced up a water well pump shortly after and sent through a long tube. Me and couple of the friends I met on the way were all dispersed over a giant grass feild. Many molecules in the group were captured by the hostile plants but I escaped through the means of evaporation. Currently I have condensed into cloud form and I am roaming the skies looking for you, when you get this let me know and I’ll percipitate in your area! P.s I found this photo of us freezing over in the ice age lollll.
help me fill this page with the right answer please (17 lines minimum please)

Please help me out!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Please help me out!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

22 grams, 5 x 3 x 1 = 15 / volume. mass (330) ÷ 15 (volume) = 22 grams (density)

Answer:

22g

Explanation:

You can use the formula to get density but to get there you need to know volume.  Volume is length x width x height. V= 3x5x1.  Volume is 15.  Then you take your mass and divide it by volume to find density.  D= 330/15.  The density is 22g.

Helpppppppp plisssssss

Helpppppppp plisssssss

Answers

B or D but I’m pretty sure it’s B I did this quiz good luck !!!! :D

Answer:

answer to your question is b

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