Zinc chloride (ZnCl2) is used as a flux when joining metals. It also is used to fireproof and remove odor from clothing. Reacting the metal zinc (Zn) with hydrochloric acid (HCl) to produce zinc chloride and hydrogen (H2). Use the models above to demonstrate that mass is conserved when zinc reacts with hydrochloric acid.
Answer:
The atoms are just rearranged but there is no decrease or increase in the mass. A law fo conservation.
Explanation:
For my science class, we were doing Savvas too so I know the answer for this question.
According to the law of conservation of mass and as depicted in the model there are equal number of atoms of reactants and products , thus demonstrating that mass is conserved.
What is law of conservation of mass?According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .
Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.
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A box sitting on a floor. Maria and Sam push on the box in opposite direction. Maria pushes to the right using 95 N of Force and Sam pushes to the left applying 80 N of Force. If the box moves, which way is it going and with how much force?
Please help (i know this is a lot but it makes no sense!!!!)
please help me out, due today!
What causes the electrons to move and form static electricity?
moist air
dry air
friction
Answer:
friction
Explanation:
The rubbing of certain materials against one another can transfer negative charges, or electrons.
Answer:
Moist air
Explanation:
If there is less ionization energy does that mean that it is more reactive? Why?
Answer:
The greater the ionization energy, the more difficult it is to remove an electron. The ionization energy may be an indicator of the reactivity of an element. Elements with a low ionization energy tend to be reducing agents and form cations, which in turn combine with anions to form salts.
Explanation:
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Purple flowers are dominant over white flowers. The parent generation includes two heterozygous parents. What are the possible phenotypes of these parents’ offspring? 3 purple and 1 white 3 white and 1 purple 1 purple, 2 lilac, and 1 white 1 white, 2 speckled, 1 purple
Answer:
A) 3 purple, 1 white
1. define speed
speed formula
2. define velocity
velocity formula
How are velocity and acceleration related?
3. define acceleration
4.what is the force of gravity?
this is due this Friday please help me
Please help me with this
Answer:
The Vacule is moving through the cell wall to get to the ”plant base” in order for it to live. It impactes itself in a good way so it can trave safely to the “plant base”
Explanation:
What are some things that can have an effect on the amount of water in the atmosphere? Describe how these examples can impact and cause changes in weather patterns.
NEED HELP ASAP
WILL GIVE BRAINLY
When air moves from an area of high pressure to an area of low pressure it causes:
a.) ran to fall
b.) an increase in temperature
c.) the wind to blow
d.) a decrease in temperature
Answer:
D
Explanation:
please help me I would apprecitated
If you don’t discover a management technique to restore nutrients to your soil, what will happen to your crops? Select all that apply
A.Your vegetables will win prizes for being unusually large.
B.Anything you grow will be at high risk for pesticides and diseases.
C.Your land could stop producing vegetables altogether.
D.Your land will be worth less money.
If crops are not getting proper nutrients from soil we may have to apply fertilizers which adversely affect the soil if no nutrient is restored to soil, it will not produce vegetables and your land will be worth less money. Thus, options C and D are correct.
What are nutrients?Nutrients are ions, minerals and proteins that is very essential for living things. Without proper nutrition, the growth of both plants and animals become will be declined.
Plants needs some elements such as nitrogen, potassium, calcium, phosphorus etc. for their growth. They absorbs these ions and water from soil and distribute all over its body through channels.
If plants are getting no nutrients from the soil their will not grow and no new vegetables will be formed in such a land where there on management to restore soil nutrients.
In such situations, we have to apply fertilizers which have may bad impacts too. Hence, without nutrients the vegetables will not grow and the land will be worth less of money.
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A man is traveling on a camel through the desert. The Camel travels 25 miles in 5 hours. What is the average speed of the camel?
Answer:
5mph
Explanation:
25/5=5
The reaction below shows the decomposition of water into oxygen and hydrogen gas.
2H2O --> 2H2 + O2
Describe how you would determine whether or not this reaction is endothermic.
Answer:
d
Explanation:
i got it right on usa testprep
ANSWER ASAP GIVING BRAINIEST FIVE STARS AND HEART!
In your own words describe some properties of energy.
Answer:
In explanation, these are the some I can think of that are basic.
Explanation:
Potential energy- Is an energy that is stored in something, like elastic. When you stretch it, you are creating potential energy.
Kinetic energy- Is an energy where something is being in motion. Like a roller coster, when you are being plunged to the bottom, you are witnessing kinetic energy!
Electrical energy- Is an energy which has to do with electric charge, like for example take a light bulb, and when you are putting it into it's place and it turns on, that is electrical energy flowing into the light bulb to turn it on.
Elastic energy- Is an energy where is you stretch elastic, you are creating energy that is compressed, and then letting it go.
This is a lot, but there are more basic ones, but I just went with the ones I thought were easy. I hope this will help you! Sorry if it doesn't help at all.
The reaction below shows the process of cellular respiration, which is occurring constantly in the cells in your body:
C6H12O6 + 6O2 --> 6CO2 + 6H2O
Describe how you would determine whether or not this reaction is endothermic.
Answer:
A process in which chemical energy (glucose) is converted into energy currency ... ATP is energy currency and it powers all functions and activities of the cell. ... The products of cellular respiration are the reactants of photosynthesis and the ... A response/action that we choose to do to help our body cope with a stimulus. b.
Explanation:
If a fan draws 220 watts on a 120- volt circuit what is the current being drawn?
1.83 amperes
15 amperes
5 amperes
22 amperes
Answer:
1.83 ampheres
The image shows particles of salt dissolved in water.
How will the arrangement of salt particles most likely change?
Salt particles will move toward the left through diffusion.
Salt particles will move toward the left through active transport.
Salt particles will move toward the right through diffusion.
Salt particles will move toward the right through active transport.
Answer:
Salt particles will move toward the left through diffusion.
Explanation:
Answer:
Salt particles will move toward the left through diffusion.
Explanation:
The image on the left shows a normal red blood cell, and the image on the right shows a cell that has been put into a new solution. The circles represent the salt in the solutions.
Which statement describes the motion of the water molecules in this situation?
The water molecules move by active transport into the cell from low water concentration to high water concentration.
The water molecules move by osmosis into the cell from low water concentration to high water concentration.
The water molecules move by osmosis into the cell from high water concentration to low water concentration.
The water molecules move by active transport into the cell from high water concentration to low water concentration.
Answer:
c
Explanation:
The water molecules move by osmosis into the cell from high water concentration to low water concentration
I kinda need help . And please don't copy stuff down from the internet.
One of the answers is Solar to Electrical hope this helps.
How do organisms depend on and compete for biotic and abiotic factors?
Be sure to check your grammar and spelling.
Sentence starter:
Organisms depend on and compete for biotic factors by..
Organisms depend and compete for abiotic factors by...
Answer:
These zebra, like all living things, need food, water, shelter, and space to survive and will compete with each other and other species of animals for these biotic and abiotic factors. ... In any ecosystem, there is only a certain amount of food, water, living space, mates, and other resources. does that help you
check my answer
Explanation:
GIVING BRAINLIEST FIVE STARS AND 25 POINTS!
In your own words answer the following essay question use 5-7 sentences:
Why does a car’s engine become hot while it is running?
Answer:
Engines can overheat for many reasons. In general, it's because something's wrong within the cooling system and heat isn't able to escape the engine compartment. The source of the issue could include a cooling system leak, faulty radiator fan, broken water pump, or clogged coolant hose.
Explanation:
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Answer:
There might be some problem in the engine's cooling system.
Explanation:
There are many reasons why your car could be overheating, but the basic process of overheating involves a problem with the vehicle's cooling system that doesn't allow heat to leave the engine compartment. This is often due to a leak or blockage somewhere in the engine cooling system or other components.
Dangers on Io include all EXCEPT: floods radiation an unstable surface volcanoes
i need help please will give brainliest but need two people to answer
If a student pushes a book across a table with a force of 6 N and the force of friction is 4 N. What is the net Force acting on the book?
Answer:
The net force is 2 N in the direction the book is being pushed.
Explanation:
1. what are the units for force?
2. what makes a force balanced?
3. what is the net force when balanced?
im stuck on these can someone help me please?
Answer: 1. Newton
2. when the forces acting on an object have equal strength and act in the opposite directions, they are balanced
3. 0
Explanation: ^
Answer:
I HAVE NO CLUEEE
Explanation:
WOOT WOOT
What is the unit of measurement for the amount of electrical energy consumed during work?
Answer:
Joule
Electrical Energy: The Volt
Explanation:
As we now know that energy is the capacity to do work, with the standard unit used for energy (and work) being the Joule. A joule of energy is defined as the energy expended by one ampere at one volt, moving in one second.
Answer:
Watt
Explanation:
I took the quiz.
The solstices and equinoxes, and the number of hours of daylight associated with each, are major factors in the seasons. Use the drop-down menus to identify the month when each of these events occurs.
The winter solstice in the Northern Hemisphere:
An equinox in both hemispheres:
The summer solstice in the Northern Hemisphere:
Answer:
1. December
2. March
3. June
Explanation:
(The exact order :D)
Edge2021
The following natural Phenomenons
The winter solstice in the Northern Hemisphere:An equinox in both hemispheres:The summer solstice in the Northern Hemisphere:happens at these times respectively
a) December
b) March and September
c) June
What are the months when each of these events occurs?The winter solstice in the Northern Hemisphere:
Winter solstice happens in the month of December in the northern hemisphere
Additionally, the Winter solstice happens in the month of June in the southern hemisphere.
An equinox in both hemispheres:
equal amounts of daytime and nighttime are experienced in the Northern and Southern Hemispheres, it happens in the month of March and September
The summer solstice in the Northern Hemisphere happens in the month of June.
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