Answer: she should‘ve called the teacher over to deal with it because she could have gotten cut and the chemical could’ve been dangerous
Explanation:
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Q9. NH4OH + HBr H2O + NH4Br
is this combustion, synthesis, single reaction, double reaction, decomposition ?
Answer:
I think its a double reaction
Explanation:
What did Edwin Hubble discover about the universe?
O Distant stars are all moving away from us.
O The farthest stars are blueshifted.
O The stars in our galaxy are all moving away from us.
The universe is an unchanging place.
What is the factor that changes the reaction rate in the following example and why:
Wine sours more slowly when stored in closed bottles.
Answer:
The factor is called a "catalyst." The wine sours more slowly when stored in closed bottles because there's no "oxygen" inside the bottle that could lead to an increase rate of decomposition.
Explanation:
Wines are naturally stored with a cork. The cork prevents oxygen from entering into the bottle. As you probably know, wines have natural bacteria which play a role in the process of fermentation. Once bacteria are introduced to oxygen, they multiply. However, in the process of fermentation, there's no oxygen present. So, once the bottle of wine is opened, it should be consumed immediately because exposing it to air will change its flavors.
A "catalyst" is a factor that affects reaction rates. Their presence hastens the time for decomposition.
What components of an atom has no charge
Answer:
Neutrons
Explanation:
Protons have a positive (+) charge.
Electrons have a negative (-) charge.
Neutrons have a neutral (0) charge.
Answer: neutrons
The components of an atom that have no charge are neutrons. Neutrons have a neutral charge, which means it has no charge. It is not positive or negative. The answer is neutrons.
Differences in states of matter are determined by
particle type
particle arrangement
particle color
distance between particles
Answer:
particle distance
solids are tightly packed
liquids are a little farther apart
and gases are very far
the amount of carbWhat is your carbon footprint?
the amount of carbon dioxide you use when recycling
the amount of oxygen put into the atmosphere due to your consumption of fossil fuels
the amount of carbon dioxide and oxygen in the atmosphere at any given time
the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuelson dioxide put into the atmosphere due to y
Answer:
D
Explanation:
CAN SOMEONE PLEASE HELP ME ASAP PLEASEE ANYBODY LITERALLY ANYONE OUT THERE PLEASE
Which subatomic particle can be shared between separate atoms?
Answer:
Electrons
Explanation:
Atoms can combine together and share electrons between them. Atoms that share electrons are linked to each other in a form, called a molecule that is in a lower energy state than either of the separate atoms alone.
Pls Brainliest! It would mean a lot! ;)
A metal sample weighs 56.8 grams. How many ounces does this sample
weigh? (1 lb = 16 oz)
Answer:
2 oz. just multiply 56.8 with 0.03527
Explanation:
Choose the coefficient for blank 1 (in front of Rb)
___ Rb + ___ P --> ___ Rb3P
options:
3
1
4
2
Answer:
3
Explanation:
Step 1: RxN
Rb + P → Rb₃P
Step 2: Balance RxN
We will need 3 Rb's on both sides.
3Rb + P → Rb₃P
the size of a marble is an example of
physical change
physical property
chemical change
chemical property
Answer:
Physical property
Explanation:
If it is right then please rate my answer. also, brainlest would not hurt if it is the brainlest answer.....
Which of the following statements best describes how the compound sodium chloride is formed?
Select one:
a. Sodium transfers one electron to chlorine, forming a sodium ion with a positive one charge and a chloride ion with a negative one charge.
b. Sodium takes one electron from chlorine, forming a sodium ion with a negative one charge and a chloride ion with a positive one charge.
c. Sodium and chlorine share protons.
d. Sodium shares one electron with chlorine.
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Actually Welcome to the Concept of the Ionic Compounds
since the compound NaCl is a ionic compound, both should have ionic charges, hence they are shown as
Na+ Cl-
The correct option is a.)
a.) Sodium transfers one electron to chlorine, forming a sodium ion with a positive one charge and a chloride ion with a negative one charge.
The correct answer is sodium transfers one electron to chlorine, forming a sodium ion with a positive one charge and a chloride ion with a negative one charge.
How sodium chloride is formed?Sodium chloride is a chemical made up of sodium and chloride ionic bonds. When sodium atoms interact with chlorine atoms, sodium chloride is generated. Chlorine will get an electron (a negatively charged particle) from sodium. As a result, sodium becomes slightly positive and chlorine becomes slightly negative. Sodium is reduced in this process because it provides an electron, while chlorine gains an electron and is oxidized.Learn more about ionic compounds here:
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How are the atoms in an object affected when the temperature of the object increases? *
They join together.
They vibrate faster.
They vibrate slower.
They split apart.
which of the data sets qualitative data?
Answer:
any data should work as long as you get the question right it should be all fine if you i had this question once and i different sums of data each or each way i did it.
“Jesus came to serve. How is He calling me to serve?”
Answer:
...
Explanation:
PLES help me for brainless
Answer:
a 1 doesn't belong
Explanation:
Gas has fast moving molecules.
Liquids have slow moving molecules.
Solids have vibrating molecules.
pless answer thisss!!
widte speed rom me and distance 502
A yacht sailed at a steady speed for 0.5 hours, passing a cruise ship that was traveling at 25
kilometers per hour. During that time, the yacht traveled 50 kilometers. What was the yacht's
speed?
Write your answer as a whole number.
kilometers per hour
Submit
The speed of the yacht : 100 km/h
Further explanationLinear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration
At constant velocity motion:the speed of vo = v = constant
acceleration = a = 0
Δx = vt or x = xo + vt
An equation of constant velocity motion
[tex]\large {\boxed {\bold {x = v \times \: t}}}[/tex]
x = distance = m
v = speed = m / s
t = time = seconds
A yacht sailed at a steady speed for 0.5 hours, and traveled 50 kilometers
so the velocity/speed:
[tex]\tt v=\dfrac{x}{t}\\\\v=\dfrac{50~km}{0.5~h}=\boxed{\bold{100~km/h}}[/tex]
what is your impression of nuclear power
11. Which of the following best explains why CO2 gas is easily compressible but solid
CO2 (dry ice) is incompressible?
The molecules of CO2 gas are much closer together than
the molecules in dry ice.
The molecules of CO2 gas are much smaller than the molecules
of solid CO2
O
The molecules of solid CO2 are much closer together than
the molecules of CO2 gas.
The molecules of CO2 gas attract one another, while the
molecules of the solid CO2 repel one another.
0
Answer:
The right answer is C. The molecules of solid CO2 are much closer together than the molecules of CO2 gas.
The molecules of CO2 gas are much closer together than the molecules in dry ice. So CO2 gas is easily compressible but solid CO2 is incompressible. The correct option is A.
What is dry ice?Carbon dioxide in its solid form is known as dry ice. Because CO2 does not have a liquid state at normal atmospheric pressure and sublimates directly from the solid to the gas state, it is commonly used for temporary refrigeration.
Dry ice can be a serious hazard in a small, poorly ventilated space. When dry ice melts, it emits carbon dioxide gas.
This gas can accumulate in a small space. A person can become unconscious and, in some cases, die if there is enough carbon dioxide gas present.
CO2 gas molecules are much closer together than dry ice molecules. As a result, CO2 gas is easily compressible, but solid CO2 is not.
Thus, the correct option is A.
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Elena held a rock weighing 1 N in her hand. The rock has no velocity.
KE________?
KE = 0
Further explanationEnergy is the ability to do work
Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:
[tex]\large{\boxed{\bold{KE=\frac{1}{2}mv^2}}}[/tex]
So for two objects that have the same speed, the greater the mass of the object, the greater the kinetic energy
The stone in hand is in a motionless state (at rest) so that its velocity (v) = 0, so it has no kinetic energy
But this stone can have potential energy that is gained due to its height
What information does not need to be included a chemical waste label? Select one: Relative amounts of chemical compounds in the container. The date the waste container was filled completely. A description of the experiment the chemicals were used for. Names of the chemical compounds present in the container.
Answer:
A description of the experiment the chemicals were used for.
Explanation:
A chemical waste label is required to provide information about any hazardous waste present in the container. Some details are mandatory to mention of the chemical waste label to prevent any accident while doing the experiment, that includes:
Chemical compound's name present in the container.Composition and physical state of the waste.Hazardous properties of the waste.The date of manufacturing.Amount of chemical compounds filled in the container.A chemical waste label does not mention or describe the experiment for which the chemicals were used for, scientists, teacher or students should have knowledge of the chemical composition by reading their names and evaluate themselves on which chemical should be used for which experiment.
Hence, the correct answer is "A description of the experiment the chemicals were used for."
The correct answer is A description of the experiment the chemicals were used for.
A chemical waste label must contain all the information about any hazardous waste present in the container. It should clearly indicate the composition of the waste, the date of manufacturing and the amount of chemical compounds filled in the container. A chemical waste label does not need to mention the experiment for which the chemicals were used.
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What does it mean to be an exact number? Give an example of an exact number.
Answer:
An exact number is a value that is known with complete certainty. Like for Examples of exact numbers are counted numbers of objects or certain unit conversions. For example, there are exactly 3 feet in 1 yard. There are exactly 12 eggs in a dozen. A class may contain exactly 25 students.
Explanation:
Hope this helps.
Have a good night ma´am/sir.
Be safe!
Jose had an assignment to classify mixtures he found around his home. As he started exploring the house, he recalled that mixtures are defined by the size and behavior of the particles in them. He found some buckets of paint in the garage. What kind of mixture can paint be classified as?
Answer:
colloid
Explanation:
Jose found some buckets of paint in the garage. The mixture can paint be classified as colloid, Therefore, option A is correct.
What do you mean by colloid ?The term colloid is defined as any substance made up of particles substantially larger than atoms or ordinary molecules but too small to be visible to the unaided eye.
A colloid is a homogenous of two phases these are the dispersed phase and the dispersion medium. The dispersed medium is analogous to the solute of the real solution while the dispersion phase is analogous to the solvent.
Their particles pass through temporary filter b. Their particles do not pass through permeable membranes. The particles of colloids are larger than those found in a solution. Their particles do not settle on standing.
Thus, option A is correct.
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Your question is incomplete, most probably your question was
Jose had an assignment to classify mixtures he found around his home. As he started exploring the house, he recalled that mixtures are defined by the size and behavior of the particles in them. He found some buckets of paint in the garage. What kind of mixture can paint be classified as?
a colloid
b solution
c solvent
d suspension
3. A substance which is made up of two are more different
elements chemically combined is known as
A. an atom
B. a substance
C. a compound
D. a molecule
Answer:
Im pretty sure it c
Explanation:
name the gas evolved when metal carbonates react with acid and state the method
Answer:
the gas evolved is carbon dioxide
Explanation:
for example we can have a look at sodium carbonate reaction with hydrochloric acid
when sodium carbonate reacts with hydrochloric acid, it results in sodium chloride, carbon dioxide and water.
Answer: Carbon dioxide
what happens to the particles of a substance as it's temperature increases
Which postulate of the kinetic-molecular theory applies to the particles of a liquid?
They do not move freely but vibrate in a stationary position.
They can be compressed, which causes a large change in volume.
They have so much kinetic energy that their intermolecular forces are negligible.
They have enough kinetic energy to easily slide by each other.
The particles of liquid have enough kinetic energy to easily slide by each other. The correct option is D.
What is kinetic-molecular theory?The kinetic-molecular hypothesis stated matter states and is based on the assumption that matter is made up of tiny particulate that are constantly in motion.
This theory adds to the knowledge of observable properties and behaviors of solids, liquids, and gases.
Because they are densely packed and vibrate in place, solids have the lowest kinetic energy.
Since liquids have higher kinetic energy, the particles slide past each other. Because gases have the most kinetic energy, they float around in the air.
Particles in liquids are very close together and move randomly throughout the container.
Due to the shorter distances between particles, particles move rapidly in all orientations but strike with each other more frequently than in gases.
Thus, the correct option is D.
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Which statement best describes insoluble substances? Insoluble substances remain the same when in water. Insoluble substances become part of the liquid substance. Water does not remain when an insoluble substance is added. Insoluble substances change from solid to liquid states.
Answer:
Insoluble substances remain the same when in water.
Explanation:
When a substance is regarded as insoluble, it means that the substance remains the same in water.
Soluble substances usually form one continuous phase with water when they are added to water (eg when salt is added to water).
However, when camphor is added to water, it does not form a single phase with water. It remains the same in the water and maintains a separate phase from the water. Hence camphor is an insoluble substance.
hey guys plz plz plz help me I am struggling I am in middle and struggling to answer this plz help
I have never learned how to calculate the specific heat there is a photo if u know plz answer we have a lot of people trying to figure out how to solve this and know one knows so plz if u know give it your best shot.
thank u I will most definitely appreciate it
and if u answer this correctly I will give 50 point and mark brainliest
of u are just trying to get point u rill be reported
so thanks guys.
Answer:
I've already answered this one for you. Anyway, please let me know if you have any more questions or need help!
The temperature at which a substance in its solid state melts into the same substance in a liquid is known as
Answer:
0 C
Explanation: