Answer:
The average human heart rate goes from 60 to 100 beats in a minute, so that'll be the main averagepoint.
Which of the fallowing would be a good that could be scientifically investigated
Which of these events breaks down rocks into smaller pieces?
a Sedimentation
b Deposition
c Weathering
d Erosion
Which equation is balanced?
A) Mg3N2 + H2O 3MgO + 2NH3
B) C3H8 + 5O2 H2O + 3CO2
C) Zn + 2HCl ZnCl2 + H2
D) 3H2SO4 + 2Fe Fe2(SO4)3 + H2
Answer:
C) Zn + 2HCl → ZnCl2 + H2
Explanation:
help me thos is the same one hear hopefully it works and not black!!! sorry
Answer:
Explanation:
the attachment is black with a x on it
In performing the "STEP TEST" for 3 minutes, what was your score (your count)? *
Answer:
81
Explanation:
Answer:
81
Explanation:
Brainliest?
Which of the following is true for compounds?
a) They can be created by chemical reactions.
b) They can be separated into their component elements through physical means.
c) They all have the same properties regardless of their elemental composition.
d) They can consist of no more than two types of elements.
Answer:
Answer: The correct option is that the compounds are created by chemical reactions.
Explanation:
Option 1: Elements combine chemically in a specific ratio to form compounds. They can't be separated by physical methods like filtration. For example, is made up 2 H-atoms and 1 O-atom. When we filter water through normal filtration, we do not obtain H-atom and O-atom separately, but we get combined form of hydrogen and oxygen atom that is .
Option 2: Compounds are formed when two or more elements combine chemically.
Option 3: Compounds can have more than two types of elements. For example, In , 3 elements are present - Calcium(Ca), Carbon(C), Oxygen(O).
Option 4: Compounds formed have different properties from one another. There can be difference in physical properties as well as chemical properties. For example, (water) and (calcium carbonate) are two compounds. Water is present in liquid state and calcium carbonate is present in solid state. Hence, it showed that all the compounds cannot have same properties
The chemical compound can be created by chemical reactions. Therefore, option (A) is correct.
What is a Chemical compound?A chemical compound can be defined as a combination of two or more either similar or dissimilar chemical elements. A chemical compound is composed of many identical molecules containing atoms from more than one element held together by chemical bonds.
A molecule containing atoms of one element is therefore not a compound. A compound can be converted into a different substance by a chemical reaction, which can involve interactions with other substances. The chemical bonds between atoms may be broken or form new bonds.
Molecular compounds have covalent bonds, ionic compounds have ionic bonds, Metallic compounds have metallic bonds and coordination complexes have coordinated covalent bonds.
Therefore, compounds can be created by chemical reactions. They have different properties regardless of their elemental composition.
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Tell me step by step how to do 3/5 divided by 5.
Answer:
3/25
Explanation:
3/5 divided by 5.
Flip the reciprocal of 5.
3/5*1/5.
3/25.
Hope this helps plz mark brainliest :D
Answer:3/25
Explanation:divide
If you have a voltage of 120 volts entering your house and a light bulb with 0.625 amperes flowing through it, how many watts is your light bulb?
Answer:
75 watts
Explanation:
Answer:
I hope this helps.
Explanation:
Why New York City and Los Angeles do not experience sunrise at the same time?
Answer:
December solstice sunrise comes at the same time for St. ... But St. Augustine has an hour more of daylight than New York. ... Look above at the simulated view of Earth as the sun is rising ...
Answer:
The different sunrise and sunset times are caused by the cities being at different locations within a time zone. This causes both cities to have a different time at which solar noon occurs, and so will shift sunrise and sunset times either forward or backwards
As to daylight hours, theoretically they should be the same at both locations. However, in real life, the amount of daylight hours at both locations is slightly different because of when (solar time) the solstice occurs.
Please help me I will give you the brain thing and extra points. image below part 8
Please help ill give you a 100 points! Its urgent!! Q^Q
Question Choice A Choice B Choice C
1. Density is a property of matter that
describes the relationship between the
__________ of an object and how much
space it takes up.
a.volume
[purple]
b.length
[blue]
c.mass
[yellow]
2. Which of the following is the equation
for calculating density?
a.D=M/V
[green]
b.D=V/M
[orange]
c.D=MxV
[purple]
3. What is the density of pure water? 5 g/mL
[black]
a.100 g/mL
[purple]
b.1 g/mL
[red]
4. If an object has a density that is
__________ water, the object will float.
a.more than
[yellow]
c.less than
[orange]
c.the same as
[green]
5. Aluminum has a density of 2.7 g/cm3.
When placed in water, the aluminum
cube will _______.
sink
[blue]
float
[purple]
neither sink
nor float
[black]
6. A leaf has a density of 0.41 g/cm3.
When placed in water, the leaf will
_______.
sink
[purple]
float
[green]
neither sink
nor float
[red]
7. The density of hot water is _______
cold water because the molecules move
faster and spread apart.
less than
[yellow]
more than
[purple]
the same as
[blue]
8. If 45 mL of liquid has a mass of
130g, what is the density of the liquid?
2.89g/mL
[orange]
0.35g/mL
[green]
125g/mL
[purple]
9. An iron meteorite has a mass of
2300g and a density of 7.5 g/cm3. What
is the volume of the meteorite?
17,250cm3
[green]
306.7cm3
[red]
0.0033cm3
[black]
10. Gold has a density of 19.32 g/cm3.
If you cut a piece of gold in half, the
density of each piece will be _______.
38.64g/cm3
[purple]
9.66g/cm3
[yellow]
19.32g/cm3
[blue]
11. Which statement is true?
The smaller
something is, the
less density it has.
[yellow]
The larger the
volume, the more
the density.
[orange]
The density of a
pure substance will
stay the same
regardless of the
size of the object.
[green]
12. Which statement is false?
Turning off the
heat will cause a
hot air balloon
to sink.
[black]
Hot air balloons
rise because hot
air has less mass
than cold air.
[brown]
Hot air balloons
rise because hot
air is less dense
than cold air.
Answer:
1. C.
Explanation:
Answer:
?
Explanation:
A student makes a model of the water cycle by using a cup, some water, and plastic wrap. After the student places the model near a sunny window, moisture forms on the inside of the plastic wrap. What change is the student most likely observing in this? A. Freezing B. Condensation C. The warming of air or D. Evaporation
Could someone explain what the answer is and why it's the answer because I don't understand.
Answer:
The answer is D
Explanation:
When water heats up the water molecules speed up so they turn into a gass. Since the water vapor has nowhere to go it sticks to the plastic wrap on the inside of the cup.
Answer:
the answer is poop
Explanation:
Which of the following is a characteristic that is distinct to eukaryotic cells?
the presence of a nucleus
they contain ribosomes that create proteins
they have DNA that stores their genetic information
they are surrounded by a cell membrane that allows materials in and out of the cell
Answer:
i think its the presence of a nucleus im sorry if this is wrong
please help !! thank you <3
Which will settle out if allowed to sit on a table?
a suspension
a colloid
a solution
a compound
Answer:
The correct answer is 'suspension'.
Explanation:
Suspension are the mixture :
When kept undisturbed solute particles get settled in the bottom of the container. Two different layers can be seen from the eyes.
Solute particles doesn't dissolves in solvent.
It is a non uniform mixture.
Size of solute particles are larger than 1000 nano-meter.
Your Welcome
help me out hear ples
PLEASE HELP I AM POSTING THIS IN EVERY SCIENCE rELATED SUBJECT
Answer:
sorry if it is wrong
Explanation:
i think it might improve it by makeing the crust stronger
What questions do you have about Earth’s motion and its relationship with the sun?
Answer:
Sun gives heat and light to earth. Earth orbits sun in 365.242 days. THis orbital motion makes seasons along with axial tilt of Earth.. Suns heat makes clouds making rains.so most places on earth gets water and plants survive.
Answer:
what is the exact time of revolution of the earth around the sun ?
where is the axis of rotation (of the earth) pointed towards ?
Why is cell division a
necessary function of living things?
Which of the following rational numbers is equivalent to a repeating decimal?
Explanation:
Repeating decimals are considered rational numbers because they can be represented as a ratio of two integers. the number of 9's in the denominator should be the same as the number of digits in the repeated block.
Please help me I will give you the brain thing and extra points. image below part 9
Answer:
I think D but dont count on me
Answer:B
Explanation:Factors that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, the physical state of reactants and their dispersion, the solvent, and the presence of a catalyst.
Please help me I will give you the brain thing and extra points. part 4 please hurry about out of time.
C6H12O6 + O2 = CO2 + H2O
Hope this helps! Please correct me if Im wrong :)
After you completed your serial dilution of the copper chloride waste, you are curious how these different concentrations of copper chloride would affect an aluminum washer. How should you set up your experiment?
Answer:
with the 22 acid just look it up it will say that
Explanation:
1. Annotate the calendar below to show approximately when the four seasons occur during the year.
Answer:
p o i n t s
Explanation:
Answer:
Spring runs from March 1 to May 31
Summer runs from June 1 to August 31
Fall (autumn) runs from September 1 to November 30
Winter runs from December 1 to February 28 (February 29 in a leap year).
Explanation:
According to the meteorological definition, the seasons begin on the first day of the months that include the equinoxes and solstices:
Spring runs from March 1 to May 31;
Summer runs from June 1 to August 31;
Fall (autumn) runs from September 1 to November 30; and
Winter runs from December 1 to February 28 (February 29 in a leap year).
What is an aquifer. e
Which of the following is the best example of erosion?
a Sediment piling up at the mouth of a river
b Plant roots growing through concrete and splitting it
c Waves carrying sand away from a beach
d A large rock splitting into pieces because of ice
Answer:
Option C
Explanation:
Remember erosion is the process of moving sediments to one location to another. In this case waves moving sand away from the beach and to another location is erosion which means your answer is option C. It's not option B because plant roots breaking apart concert is a example of weathering, and the same goes for option D.
Hope this helps.
Explain why electrical charges flow from one atom to another?
Answer: the electron from one atom will be attracted to the next atom in the direction of the positive charge the atom will jump out of its orbit in its atom into the orbit of the next atom
Explanation:
To solve this we must be knowing each and every concept related to electrical charges. Therefore, to make a neutral molecule, electrical charges flow from one atom to another.
What is electrical charges?Electrons, like protons, are bonded in an atom, although not all electrons. Electrons placed further out from the nucleus could be taken from the atom.
Whenever some electrons are taken from the atom, the amount of protons surpasses the amount of electrons leading to an electron deficit. The electrically neutral substance becomes positively charged once electrons are removed. In the opposite instance, the body can obtain electrons from an external source. In this instance, the body's electron count rises resulting in it becoming negatively charged.
Therefore, to make a neutral molecule, electrical charges flow from one atom to another.
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A mixture is made of two or more materials that....
a) cannot be separated by any means.
b) cannot be separated by any means.
c) can be separated by physical means.
d) cannot be separated by physical means.
Answer:
C
Explanation:
hope this helped a little :)
The steps for seed germination are listed below in random order. W: roots grow down while stems and leaves grow up X: leaves open up Y: seed absorbs water Z: embryo uses stored food Which shows the correct order of the steps? X, W, Y, Z Y, Z, X, W Y, Z, W, X X, W, Z, Y]
Answer:
Y, Z, W, X
Explanation:
Answer:
Y,Z,W, and X
Explanation:
3. Sketch a simple model that shows why the constellations change over the course of a year. Then, annotate the model to explain why you see different stars throughout the year.