a piece of debris travelling through space which ranges in size from a grain of sand to over 100ft in diameter
Answer:
Meteoroids are tiny asteroids or the broken-off crumbs of comets and sometimes planets. They range in size from a grain of sand to boulders 3 feet (1 meter) wide. When meteoroids collide with a planet's atmosphere, they become meteors
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When a car starts rusting where there is a scratch on the paint, a redox reaction is happening
TRUE OR FALSE
Answer:
it is true
Explanation:
hope it helps :)
Answer: I think it is true
Explanation:
it is true because it will start rusting when there is a scratch on the paint!
I HOPE THIS HELPS YOU!!
Which statement is false? *
a.) Pressure must be exerted on a sample of a gas in order to confine it.
b.) Gases diffuse into each other and mix almost immediately when put into the same
container.
c.) The molecular weight of a gaseous compound is a non-variable quantity
d.) Gases can be expanded without limit.
e.) The density of a gas is constant as long as its temperature remains constant.
Answer:
d.) gases can be expanded without limit.
Calculate the approximate volume of a 1.50 mol sample of gas at 15.0°C and a pressure of 3.75 atm
Answer
F 1.73 L
G 5.93 L
H 8.65 L
J 9.46 L
Answer:
The answer is J (9.46 L)
How much of Earth's surface does the hydrosphere cover?
A.50 percent
B.75 percent
C.25 percent
D.90 percent
Answer: about 70%
The Hydrosphere is associated with water in the liquid state, which covers about 70% of the Earth's surface. Most liquid water is found in the oceans. Our Hydrosphere gives Earth a distinct appearance as a blue marble and separates us from other planets in the solar system.
Explanation:
Answer:
It's B
Explanation:
A substance with two or more different types of atoms chemically bonded together is called....
a. an element
b. an atom
c. a mixture
d. a compound
Answer:
D
Explanation:
chemistry:
plz help me:D
Answer:
the amswer to number 5 is 18g/ mol and the answer to number 6 is 8
how is water treated for human use
Answer:
the water is first screened then filtered to remove undesolvable objects then passed into the sedimentation tank which is again filtered after leaving the tank. Chlorine is then added to the fine filtered water to kill viruses and bacteria. now the water is clean hope i ave help u enough
Explanation:
It is the year 2032, and a new planet (Planet Y) is discovered. An astronaut with a mass of 79.00 kg visits the new planet. It is discovered that his weight on the new planet is 740.8 lbs. What is the estimate of the g force on the planet and would the astronaut be heavier on Planet Y or on Earth? (Earth has a g force of 9.81 m/s2 ).
Answer:
“Newton’s Law of Gravity” gives the gravity force between two objects with masses m
and M separated by distance r:
F G
m M
r
2
G is called the Gravitational Constant, and has the value
6.671011N m
2
kg2
(N is for
Newton, the physicists’ unit of force) or
1.51011 lbm
2
kg2
.
Let’s go back to the example given in the text: two 150 lb people separated by 1 meter.
The mass of each person is
150lb
2.2
lb
kg
68kg
. Putting these into the formula gives
F 1.5101 1 lb m
2
kg2
(68kg)
2
(1m)
2
107
lb.
Newton’s Law of Gravity actually gives the force only between two small objects. If one
of the objects is a sphere (such as the Earth) then it turns out that you can still use the
formula, but you must use the distance to the center of the sphere as the value for r. As
an example, let’s put in numbers for a 1 kg object sitting on the surface of the Earth.
Then the force of attraction is given by the gravity equation with m = 1 kg, M = the mass
of the Earth =
24 610
kg, and r = radius of the Earth (that’s the distance to the center of
the sphere). This distance is r = 6371 km ≈
6
610
meters. Without plugging in the
numbers, can you guess what the answer will turn out to be? Guess, and then check this
footnote2
to see if you guessed correctly.
Suppose you weigh 150 lbs on the Earth. Then your mass is
150lb
2.2
lb
kg
68kg
. What will
you weigh on the Moon? We can calculate that by using Newton’s Law of Gravity, and
putting in the M = the mass of the Moon =
22 7.310
kg, r = the radius of the moon =
6
1.710
meters. The answer is F = 25 lb. That means you will weigh 25 lb. on the
surface of the Moon.
Explanation:
hope this helps :)
what are the possible
phenotypels for the offspring when you cross two heterozygous pink flowers? *
Answer:
the phenotype of the offspring will be pink
What happens when you change the number of protons keeping the numbers of other particles the same?
Answer:
See explanation
Explanation:
The atomic number refers to the number of protons in the nucleus of an atom. We identify an element by its atomic number.
When the atomic number of an atom of an element is changed, we have changed the identity of that atom and transformed it into an atom of a different element.
For example, if we add a proton to a sodium atom, we create a magnesium atom. If we remove a proton from a sodium atom, we create a neon atom.
Which best describes the sequence of elements in Period 5 of the periodic table? (Read the table from left to right and choose the best description)
Nonreactive gases, Metalloids, Nonreactive metals, Highly reactive metals, Highly reactive gases
Highly reactive gases, Relatively nonreactive metals, Metalloids, Very nonreactive gases, Nonreactive nonmetals
Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases
Nonreactive gases, Nonreactive metals, Highly reactive metals, Metalloids, Reactive nonmetals, Reactive gases
Answer: It’s the 3rd one
The elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.
The elements of period 5 include metals and nonmetals,
For example-
Rubidium and Strontium reactive metals.It contains Relatively nonreactive metals,Nitrogen and phosphorus are nonmetals in period 5.Xenon is the non reactive gas in period 5.Therefore, the elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.
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What kind of energy is being transformed???
Answer:
Kinetic Energy
Explanation:
When we run we are using chemical energy in our bodies to produce movement ( kinetic energy ) .
2. F2 (g) + SrCl2 (aq)
--->
SrF2 (aq)
+ Cl2 (g)
Complete lonic:
Net tonic:
Answer:
see explanation
Explanation:
The molecular equation => F₂(g) + SrCl₂(aq) => SrF₂ + Cl₂(g)
Ionic Equation: shows all species involved in the reaction. For the ionic reaction given the ionic equation should show all substances in reaction in ionic form along with the molecular formulas of non-ionic compounds. In general, salts that contain a metal and nonmetal that undergo ionization when dissolved in water.
The ionic equation => Show ionic compounds in ionized form with oxidation states. Do not ionize weak acids weak bases ( molecular compounds.
=> F₂(g) + Sr⁺² + 2Cl₋ => Sr⁺²(aq) + 2F⁻ + Cl₂(g)
The net ionic equation => shows only species directly involved in the chemical process. If in the net ionic equation that are equivalent on both sides of the working equation, one should remove those compounds from the ionic equation showing only the species involved in the chemical reaction process.
=> F₂(g) + Sr⁺²(aq) + 2Cl⁻(aq) => Sr⁺²(aq) + 2F⁻(aq) + Cl₂(g)
Note that Sr⁺²(aq) is found on the reactant and product sides of the equation. Cancelling Sr⁺² gives the net ionic equation.
=> F₂(g) + 2Cl₋(aq) => 2F⁻(aq) + Cl₂(g)
i am the frame word that supports cell
Answer:
blood?
Explanation:
because you need it and makes your body works
What is food made up of?
Answer:
nutrients
Explanation:
nutrients are materials the body needs to build itself and stay in top working order
Answer:
What's In Food?
As far as the body is concerned, food is made of various nutrients, and a large number of substances that have no nutrient value. Nutrients are the materials the body needs to build and stay in top working order
The pressure in a bicycle tire is 1.34atm at 33.0 ° C. At what temperature will the pressure inside the tire be 1.60atm?
Answer:
92.37°C
Explanation:
Assuming the volume remains the same in both the states ( bicycle tire).
Then as per ideal gas equation
[tex]P_1/T_1 = P_2/T_2[/tex]
where P1, P2 are pressure at two different states and T1, T2 are temperature at these two states
Given:
P1 = 1.34 atm, T1 = 33.0 ° C = 306K
P2 = 1.60 atm, T2 = ?
1.34/306 = 1.60/T_2
⇒ T2 = 1.60×306/1.34
= T2= 365.37K= 92.37°C
Describe two physical properties of sodium which are different from the physical properties of transition elements such as copper.
Answer:
Malleability : Capable of being shaped or bent.
Ductility : Easily pulled or stretched into a thin wire.
Luster : Has a shine or glow.
Conductivity : Good transmission of heat or electricity.
Softness : Soft enough to be cut with a knife.
How many pennies do you need to stack for them to be as tall as a 2,300 mm door?
(1 penny = 1.52 mm)
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 1513.15789 Pennies
Explanation:
2300 / 1.52 = 1513.15789
I hope this helped!
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4. Mixing sand and salt in water then passing it through a filter separates out the sand because salt
in water and sand does not.
a) reacts
b) dissolves
c) disappears
Answer:
dissolve
Explanation:
salt will dissolve in water while sand will not, so you arent going to see salt pass through
Answer:
b
Explanation:
Freshwater makes up about 90% of the Earth's surface.
Answer:
what is your question?
Explanation:
I don't understand
Carbon forms triple bonds with other carbon atoms in the
compound named
a ethane.
bethene.
C ethyne.
d two of the above
Answer:
C
Explanation:
In carbon- to- carbon compounds like ethyne,carbon forms triple bond with each otherCarbon forms triple bonds will form triple bonds with other carbon and forms ethyne. The triple bonded hydrocarbons are commonly called as alkynes. Hence, option C ethyne is correct.
What are alkynes?Carbon forms bond with other carbons and exhibit the property of catenation to form long chains. The backbone of hydrocarbons are the carbon - carbon bonds.
There are three types of hydrocarbons namely, alkanes, alkenes and alkynes. Alkanes are saturated hydrocarbon having single bond between carbon atoms. Eg. methane , ethane etc all having suffix of 'ane'. Alkenes are unsaturated hydrocarbons with double bond between two or more carbon atoms.
Alkenes are named with the suffix 'ene'. Hence, the names become ethene, propene etc. When triple bonds forms between carbon atoms they are called alkynes and are unsaturated. Alkynes are named with the suffix 'yne' like ethyne, propyne etc.. Hence, two carbon with triple bond between them is ethyne.
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How does a stage 2 of cellular respiration benefit a cell?
Answer:
The second stage of cellular respiration is the “Krebs Cycle”. This is a catabolic reaction that occurs within the cells. In cells, the energy is produced and stored in the form of ATP.
pls help me out with this question!
How many grams of carbon dioxide would be produced if we use 35 grams of methane in the reaction below? CH4 +2O2---- Co2 + 2H2O
Answer:
96g of CO₂ would be produced
Explanation:
Based on the reaction:
CH₄ + 2O₂ → CO₂ + 2H₂O
1 moles of methane, CH₄ produces 1 mole of carbon dioxide, CO₂.
To solve this question we must find the moles of methane added in the reaction. These moles added are equal to moles of CO₂ produced. With the molar mass of CO₂ (44.01g/mol) we can find the grams that would be produced:
Moles CH₄ -Molar mass: 16.04g/mol-:
35g * (1mol / 16.04g) = 2.182 moles of CH₄ are added = Moles CO₂ produced.
Mass CO₂ produced.
2.182 moles CO₂ * (44.01g / mol) =
96g of CO₂ would be producedWhy is important for plants that all ammonium, nitrate and nitrite compounds are soluble
in water?
Answer:
Nitrites can be reduced to form nitrogen. Almost all nitrate salts are soluble in water. Almost nitrate are soluble in water and slightly soluble in primary alcohols. The oxidation number of nitrogen in the nitrates is +5. The oxidation number of nitrogen in nitrates is +3.
Explanation:
Ammonium nitrate readily dissolves in water by dissociating into its respective ions. This salt is acidic in nature. Ammonium nitrate is an important fertilizer required for the growth of plants.
Why ammonium nitrate needed for plants?The nitrogen is the most usually used limiting supplement in the development of crops. Nitrogen is essential for the vegetative development and it is involved in creating food through photosynthesis. The use of ammonium nitrate is the best way to provide nitrogen for the plants.
It is very essential to convert nitrogen into nitrate, in order to be used by the plants. The ammonium nitrate and nitrite are highly stable than urea and does not rapidly lose nitrogen to the atmosphere. So both the nitrites and nitrates of ammonium are soluble in water and plants can easily absorb them.
So ammonium nitrate has high nutrient content.
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Which part of homeostasis is this adorable puppy balancing out with his little stuffed animal buddy?
Body Temperature
Energy
Waste
Water Level
Cuteness
Plzzz help
Answer:
body temperature and energy
A man pulled a food cart 4.5 m to the right for 15 seconds. What is the average speed of the food cart to the nearest tenth of a m/s?
The average speed of the food cart to the nearest tenth of a m/s is 0.3 meter per second.
How do we calculate speed?Speed of any moving body will be calculated by using the below formula as:
Speed = Distance / Time
Given that, Distance travelled to the right side = 4.5m
Time to travel = 15 sec
On putting values on the above equation, we get
Speed = 4.5 / 15 = 0.3 m/s
Hence required speed is 0.3m/sec.
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1. What volume of oxygen is needed to react with solid sulfur to form 3.5L SO2?
S + 02 > SO2
Answer:
Explanation: in same temperature amounts of moles are proportional
To volumes of gases. When one mole Oxygen reacts with Sulphur,
One mole Sulphur dioxide is formed. Thus 3,5 litres O2 is needed to produce same volume SO2
using details and examples from the text explain how the digestive system helps your body obtain the energy it needs
Answer:
Explanation: