Answer: sea, more
I hope this helps
helppp nowwww plsss
Answer:
i think its 3
Explanation:
because cloud are made from water vapor and clouds also got preciptation if im wrong sorry
Martin slowly pours an unknown liquid into a container that originally had some water in it. He is measuring the temperature in the container as he does this.
The temperature in the container rises very fast.
What kind of change is likely to be happening in the container?
A chemical change.
A physical change.
Both a chemical and a physical change.
Neither a chemical nor a physical change.
Answer:
A chemical change.
Explanation:
As the temperature rises fast, the kind of change that can be said to be occurring is a chemical change.
One of the way to know of a chemical change is occurring is that new kinds of matter is formed and also, there is either an evolution or absorption of heat energy in the process.
Since heat is liberated in this change, an exothermic chemical reaction is taking place.
So this is a chemical change.
How many moles are in 88.6 g of CaF4
Answer: The answer is 78.0748064. We assume you are converting between grams Calcium Fluoride and mole.
Explanation: Meeting ID: nine nine two, three eight six seven, zero five eight zero
What is the density of a rock that has a mass of 35 grams and a volume of 7.0 g/mL
Answer: 5
Explanation: Density equals mass divided by volume (D=M/V). Thus, 35/7=5.
The density of a rock : ρ = 5 g/cm³
Further explanationGiven
mass = 35 g
volume = 7 cm³
Required
The density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Input the value :
ρ = 35 g : 7 cm³
ρ = 5 g/cm³
Stars A and B have the same absolute brightness and are the same temperature, but when you look in the sky, Star A
looks dimmer. Why is this?
Star Ais closer than Star
B
Star A is farther away than Stars
с
Stars A and B are the same distance
None of the above
Answer:
star a is farther away
Explanation:
The speed of light in a vacuum is 2.998 x 108 m/s. How long does it take for light to circumnavigate the Earth, which has a circumference of around 24,900 miles? Do not enter "seconds" as part of your answer. Watch your Sig Figs!
Answer:
0.13 s
Explanation:
We'll begin by converting 24900 mile to metres (m). This can be obtained as follow:
1 mile = 1609.344 m
Therefore,
24900 mile = 24900 mile × 1609.344 m / 1 mile
24900 mile = 4.01×10⁷ m
Finally, we shall determine the time taken for light to circumnavigate the Earth, this can be obtained as follow:
Distance = 4.01×10⁷ m
Speed = 2.998×10⁸ m/s
Time =?
Speed = distance / time
2.998×10⁸ = 4.01×10⁷ / time
Cross multiply
2.998×10⁸ × time = 4.01×10⁷
Divide both side by 2.998×10⁸
Time = 4.01×10⁷ / 2.998×10⁸
Time = 0.13 s
Thus, it will take 0.13 s for light to circumnavigate the Earth.
The distance time graph for four objects is shown below:
Which objects is moving at constant speed?
A. Object A
B. Object B
C. Object C
D. Object D
Answer:
Option A
Explanation:
Remember constant means staying the same so in order to remain constant on the graph the line has to keep going up remaining the same pace. Which means the answer is option A or "Object A." The graph consists of a line going up at a constant speed without any bends or turns which all the other options consist of.
Hope this helps.
starting with the idea of isostasy and ending with plate tectonics, explain how scientists understanding of the earth's crust has changed
Plate Tectonics is the study of the movement and changes in the rocks that make up the earth's crust. Isostasy is the equilibrium in the earth's crust maintained by a flow of rock material in the asthenosphere.
The concept behind pre-continental drift was that in addition to the pressure of contraction, isostatic adjustments also caused the crust's heavier portions to sink and its lighter portions to rise. It was believed that the Earth's interior was a viscous fluid that could support this rising and sinking.Wegener put up the theory that continents can move in 1915 based on fossil data, how coasts appeared to fit together, and other traits, but it was not well received at the time.He noticed that rock ages, and mountain belts match up across the boundaries of continents if you put the continents back together as the "jigsaw puzzle fit" proposes.On continents that are currently divided by water, fossils of identical terrestrial flora and animals have been discovered.New data from the ocean floor, including topography and rock magnetism, played a major role in the development of plate tectonic theory in the 1960s.On the basis of symmetrical patterns, seafloor spreading was hypothesized as a mechanism to propel the migration of the continents.Hence this led to scientists understanding of the earth's crust has changed.
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What is the chemical formula of CuH10N2O11.
A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.
Hope I helped :)
Diagram electron configuration of hydrogen (1), sodium (11), K (19) what do they have in common?
They can only hold 2 electrons in the first outershell
c) how many atoms of O are in 45.0g of C12H22011
Answer:
6.022×1023 oxygen atoms
how do people and water affect each other?
Answer:
is this for science or another class?
Answer:
Water is peace. They include sedimentation, pollution, climate change, deforestation, landscape changes, and urban growth. ... Each type of change to a landscape will have its own specific impact, usually directly on natural ecosystems and directly or indirectly on water resources.
Explanation:
How many moles of water are produced when 5 moles of hydrogen gas react with 2 moles of oxygen has?
2H2 + O2 + 2H20 (5 points)
2 moles of water
4 moles of water
5 moles of water
7 moles of water
Answer: 4
Explanation:
Assume 2 moles O2, not O
O is limiting
2O2 + 4H2 —> 4H2O
so 4 moles water
What happens in the lungs? Select all that apply.
A. Blood releases oxygen into the air.
B. Blood mixes with the air.
C. Blood releases carbon dioxide into the air.
D. Blood absorbs oxygen from the air.
E. Blood absorbs carbon dioxide.
Answer:
B, C, D
Explanation:
When inhaling air enters the lungs and oxygen from the air moves from the lungs to the blood. At the same time, carbon dioxide, a waste gas, moves from the blood to the lungs and is exhaled.
Answer:
i think it's B
Explanation:
Hope this helps !!
Students want to replace the material that connects the battery and the bulb in the circuit. Which material would be the best choice?
A Copper, because it is a conductor
B String, because it is flexible.
C Plastic, because it is an insulator.
D Glass, because light energy can move through it.
Answer:
a is ok
Explanation:
if they had gold it would be better but no
Scientists currently use radioactive isotopes in various field. Some radioactive isotopes are used to _____.
•power iasers
•develop new antibiotics
•clone organisms
•date ancient bones
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
ur answer is:-
date ancient bones
Scientists currently use radioactive isotopes in various field. Some radioactive isotopes are used to date ancient bones.
What are isotopes?Isotopes are defined as substances having same number of protons but different number of neutrons.Number of protons is characteristic for determining position of elements in the periodic table.
Since,all isotopes have the same number of protons and hence have same position.They have similar chemical properties as they have same number of electrons.
They find applications in the field of nuclear medicine and oil and gas research . There are 2 types of isotopes : stable and unstable
Unstable isotopes are radioactive and are called as radioisotopes.Some of these isotopes are man -made and hence also called as artificial isotopes.Every element has an isotope which is either man-made or natural .
Many properties of isotopes depend on mass which is measured in atomic mass unit. The difference in actual mass and mass number is called mass defect.
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How many grams in 65 moles of NaCl?
Answer:0.899076923
Explanation:
Na = 22.99
Cl =35.45
Add them together u get the molar mass of NaCl =58.44
Divide 58.44 by 65
U get 0.899076923
Balance the equation N2 +H20= NH3 + NO
Answer:
N₂ + 3H₂O → 2NH₃ + 3NO
Explanation:
The reaction expression is given as:
N₂ + H₂O → NH₃ + NO
We are to balance this reaction expression.
To do this, assign a,b,c and d as the coefficients that will balance the expression:
aN₂ + bH₂O → cNH₃ + dNO
Conserving N: 2a = c
H: 2b = 3c
O: b = d
let a = 1, c = 2, b = 3 and d = 3
So;
N₂ + 3H₂O → 2NH₃ + 3NO
ASAP , 8.81 g Carbon
Molar Mass: 1362.5 g/mol
91.2 g Chlorine
What is the empirical formula and molecular formula ?
The empirical formula : C₂Cl₇
The molecular formula : C₁₀Cl₃₅
Further explanationGiven
8.81 g Carbon
91.2 g Chlorine
Molar Mass: 1362.5 g/mol
Required
The empirical formula and molecular formula
Solution
Mol ratio :
C = 8.81 g : 12.011 g/mol =0.733
Cl = 91.2 g : 35,453 g/mol = 2..572
Divide by 0.733
C : Cl = 1 : 3.5 = 2 : 7
The empirical formula : C₂Cl₇
(The empirical formula)n = the molecular formula
(C₂Cl₇)n = 1362.5
(2x12.011+7x35.453)n=1362.5
(272.193)n=1362.5
n = 5
20 POINTS! SAVE ME PLS!!!
What is an easy way to determine the amount of valence electrons that an element will have?
A. The valence electrons are the same as the period number.
B. The valence electrons are the same as the atomic number.
C. The valence electrons are the same as the 1's place of the group number.
D. All of the above.
Answer:
A. it is A. i am 80% sure it is A,
Explanation:
helppp nowwww plsss
Answer:
Barb tested the streak and luster.
Explanation:
Pls mark brainliest
Answer:
Mineral size and luster.
Explanation:
Which organelle packages materials and distributes them throughout the cell?
lysosome
chloroplast
Golgi body
cell membrane
Pleaseee!!
Answer:
golgi body
Explanation:
trust meeeeeeeeeWhat can break light apart
How many liters are in 3.45 moles of oxygen gas at STP?
A) 2.08 x 10 24 L
B) 110.4 L
C) 77.28 L
D) .15 L
Answer:
22.4L of one mole of any gas
or you can use PV=nRT
3.45*22.4=77.28
Explanation:
What is the relationship between chromosomes and DNA?
Question 6 options:
Chromosomes are made of DNA
Chromosomes do not occur within the cell.
Chromosomes produce DNA.
They are on a break...
Answer:
Chromosomes are made of DNA
Explanation:
The relationship between chromosomes and DNA is such that chromosomes are made up of DNA.
DNA is deoxyribonucleic acid. It is the main component of the chromosome and basic ingredient for hereditary.
The DNA holds complete sets of instructions that helps control life processes. The chromosome acts as the store house for holding the DNA.
During cell division and reproduction, the chromosomes play very important roles in determining what a person inherits.
Answer:
Chromosones are made of DNA
Explanation:
What is the mass of reactants in the following equation? N2 + 3H2 ----> 2NH3 Question 3 options: 34.05 amu 31.03 amu 30.02 amu 15.01 amu
Answer:
34.06amu
Explanation:
The reaction expression is given as:
N₂ + 3H₂ → 2NH₃
We are to find the mass of reactants in the equation given;
Here:
Mass of reactants = 2(atomic mass of N) + 3[ 2 x atomic mass of H]
Atomic mass of N = 14.0067amu
Atomic mass of H = 1.008amu
Mass of reactants = 2(14.0067) + 3(2 x 1.008) = 34.06amu
Pls help me I beg you
Answer:
Es la c
Explanation:
Espero que te ayude
Answer:
D. Nathan applies enough force through pushes to move the piano
Explanation:
What moves the piano is a net force that is applied through the effort of Nathan on the instrument.
Force is a pull or push on a body.
When force is applied on a body, it causes the state of motion of the body to change.
Therefore, if a body has a net force greater than zero, the body will in likewise begin to move. As Nathan pushes on the piano, it will eventually move.
What is the main cause of weathering on a beach?
the movement of the waves
the sunshine heating the sand
the pet dogs running on the sand
the people walking on the beach
What are zebra mussels?
Answer:
The zebra mussel is a small freshwater mussel.
How much heat is necessary to change 10.0 g of water from 20 degrees celsius to 75 degrees celcius?
Answer: 29.6
Explanation:
The amount of heat is necessary to change 10.0 g of water from 20 degrees celsius to 75 degrees Celcius 50 J ( joules).
what is heat?Heat is the transfer of hot energy in the form of potential energy from one source of an object to another source of an object through a medium for the object and the unit of heat is joules.
The amount of heat can be calculated by a formula,
C = Q / ΔT × m
m = mass, Q = total heat, ΔT is changing in temperature.
substituting the value in the equation,
C = 75/ (75-20) 10
C = 50 J ( joules)
Therefore, 50 J ( joules) is the amount of heat necessary to change 10.0 g of water from 20 degrees Celsius to 75 degrees Celcius.
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