Answer:
B
Explanation:
Weathering is the physical and chemical breakdown of rock at the earth's surface. ... The physical breakdown of rock involves breaking rock down into smaller pieces through mechanical weathering processes. These processes include abrasion, frost wedging, pressure release (unloading), and organic activity.
the action force
According to Newton's third law of motion, a reaction force between two objects is
but in the opposite direction.
equal to
greater than
less than
Answer:
equal to - it's opposite but equal energy is the third law
what is a metal that forms two types of oxides and rusts in moisture
Answer:
An example of a metal that rusts is Iron
Answer:
Iron
Explanation:
The metal that forms 2 types in moisture is iron.
2KCIO3 -> 2KCI+ 302
How many moles of oxygen are produced by
the decomposition of 6.0 moles of potassium
chlorate, KCIO3?
Answer:
9 moles
Explanation:
The balanced chemical equation for this decomposition reaction is as follows:
2KCIO3 → 2KCI+ 302
Based on this equation, 2 moles of potassium chlorate (KCIO3) decomposes to form 3 moles of oxygen gas (O2).
Hence, 6 moles of pottasium chlorate will decompose to produce;
6 × 3 ÷ 2
= 18 ÷ 2
= 9 moles of O2.
Suppose Rutherford's lab was 10 meters (m) long and the speed of an alpha particle is 3.0x10^8 meters per second (m/s). How much time would he plan on the alpha particles taking to move from the alpha particle source to the gold foil target? Write it in a mathematical equation
Answer:
t = d/v , 33.3 ns
Explanation:
Since distance, d = vt where v = speed and t = time taken to cover the distance.
Since the distance, d covered by the alpha particle is the length of Rutherford's lab which is 10 m long and the speed of the alpha particle is v = 3 × 10⁸ m/s, the time, t it takes the alpha particle to move from the alpha particle source to the gold foil target is thus
t = d/v
= 10 m/3 × 10⁸ m/s
= 10/3 × 10⁻⁸ s
= 3.33 × 10⁻⁸ s
= 33.3 × 10⁻⁹ s
= 33.3 ns
If you form 3.28 moles of FeCl3 in a reaction, how many moles of FeCl2 did you start with? SHOW ALL WORK Plz
Answer:
molerat
Explanation:
Answer:
3.28 mol
Explanation:
2 mol FeCl3 forms from 2mol of FeCl2
therefore 3.28 mol of FeCl3 forms from=2/2×3.28 mol=3.28 mol
1- What is the molar mass of the following compounds?
a. Ca(OH) 2 _______________________________=
b. H 2 O 2 _______________________________=
c. KCl _______________________________=
d. NaH 2 PO_______________________________=
Answer:
a. Ca(OH)₂ = 74.08 g/mol
b. H₂O₂ = 34 g/mol
c. KCl = 74.55 g/mol
d. NaH₂PO₄ = 119.97 g/mol
Explanation:
In order to determine the molar mass of each compound we need to sum, the molar mass of each element.
a. Ca(OH)₂
40.08 g/mol (Ca) + 2 . 16 g/mol (O) + 2 . 1 g/mol (H) = 74.08 g/mol
b. H₂O₂ → 2 . 1 g/mol (H) + 2 . 16 g/mol (O) = 34 g/mol
c. KCl → 39.1 g/mol (K) + 35.45 g/mol (Cl) = 74.55 g/mol
d. NaH₂PO₄
23 g/mol (Na) + 2 . 1 g/mol (H) + 30.97 g/mol (P) + 4 . 16 g/mol (O) = 119.97 g/mol
Adaptations ONLY help an organism stay alive when they are physical and NOT when they are behavioral. true or false??
Answer:
true
Explanation:
i hope it's true, if not, then it's false, if anyone else answered but got it from the link, let me know to report it or you report it
Answer:
False.
Explanation:
Hibernation is an example of a physical adaptation. False.
MgSO4 x 7H2O:
How
many molecules of
water are present
per magnesium
sulphate formulation
unit
Answer:In regards to writing the formula, we know that magnesium has a charge of 1+ and sulfate, SO4, has a charge of 1-. Sulfate is a polyatomic ion so the charge of the whole thing is (SO4)1-. When you combine them you end up with MgSO4 and the "heptahydrate" is seven water molecules.
Explanation:
Answer:
Iduno sorry po hsjsnaka
helpppppppppppppp!!!!!!!!!!!!!how did chlorine atom attain saturation in potassium chloride and oxygen dichloride
Briefly describe each of the suns layers. I’ll give brainless
Answer: The inner layers are the Core, Radiative Zone and Convection Zone.
The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona.
Nuclear fusion of hydrogen in the core of the Sun produces tremendous amounts of energy that radiate out from the Sun.
The corona is the outermost layer of the Sun, starting at about 1300 miles (2100 km) above the solar surface (the photosphere). The temperature in the corona is 500,000 K (900,000 degrees F, 500,000 degrees C) or more.
The chromosphere is a layer in the Sun between about 250 miles (400 km) and 1300 miles (2100 km) above the solar surface (the photosphere). The temperature in the chromosphere varies between about 4000 K at the bottom (the so-called temperature minimum) and 8000 K at the top (6700 and 14,000 degrees F, 3700 and 7700 degrees C), so in this layer (and higher layers) it actually gets hotter if you go further away from the Sun, unlike in the lower layers, where it gets hotter if you go closer to the center of the Sun.
The photosphere is the deepest layer of the Sun that we can observe directly. It reaches from the surface visible at the center of the solar disk to about 250 miles (400 km) above that. The temperature in the photosphere varies between about 6500 K at the bottom and 4000 K at the top (11,000 and 6700 degrees F, 6200 and 3700 degrees C)
(phew! There you go!)
Using standard formation enthalpies, calculate the standard reaction enthalpy for this reaction. 6CO2(g) + 6H2O(l)C6H12O6 + 6O2(g) ANSWER: kJ/mol
Answer:
2802.5 KJ/mol
Explanation:
Calculate standard enthalpy of the Reaction :
6CO2(g) + 6H2O(l)C6H12O6 + 6O2(g)
using standard formation enthalpies . hence the standard enthalpy of the reaction = 2802.5 KJ/mol
attached below is the detailed solution
Many ski resorts and mountain cities can be reached directly by planes which deposit travelers a mile or more above sea level. This can result in altitude sickness due to hypoxemia, or reduced oxygen in the blood, caused by the unaccustomed exposure to the lower atmospheric pressure at high elevations. On a given day, the prevailing atmospheric pressure in Albuquerque, NM (elevation 1620 meters) might be 0.799 atm. Calculate this pressure expressed in mmHg and in torr. Relationship between altitude and barometric pressure.
Answer:
See explanation
Explanation:
To convert from atm to mmHg
1 atm = 760 mmHg
0.799 atm = 0.799 atm * 760 mmHg/1 atm = 607.24 mmHg
To convert from atm to torr
1 atm = 760 torr
0.799 atm = 0.799 atm * 760 torr/1 atm = 607.24 torr
How is a scientific law different from other laws in society?
A. A scientific law serves to protect people, property, and nature from
harm.
OB. A scientific law describes what always happens under specific
conditions in nature.
C. A scientific law is a rule about how to treat and punish people.
D. A scientific law is what scientists have decided should be forced
to happen in nature.
Answer:
B. A scientific law describes what always happens under specific
conditions in nature.
Explanation:
Scientific law is something that has been proven over and over and therefore is always correct under conditions in nature.
Answer:
B. A scientific law describes what always happens under specific
conditions in nature.
Explanation:
Scientific law is based on observation and experiments to support a claim. It usually describes nature.
1. Which of the following is not an example of a form of carbon?
O fullerenes
O graphite
salt
diamond
precautions of a radioactive decay lab ?
Answer:
Don't touch radioactive waste with bare hands
Don't eat the radioactive thing
Wear protective eyewear
Wear lab coat/gloves
Explanation:
https://ehs.princeton.edu/laboratory-research/radiation-safety/radioactive-materials/handling-radioactive-materials-safely
Princeton article
What is needed to change a phase of matter?
The addition or subtraction of thermal energy. For example if you heat up an ice cube, it will melt to become water. If you heat it even more, it will evaporate.
PLEASE HELP ILL MARK BRAINLIEST
Answer:
1. true
2. existing matter
3. the materials simply turn into gases you cannot see
hope that helps! ☺
plz mark Brainliest!
please help and show work
What is the volume of 5.7 moles of Hydrogen gas?
Does a animal cell have cytolysis?
Answer:
The presence of a cell wall prevents the membrane from bursting,so cytolysis only occurs in animal and protozoa cells which do not have cell walls.
Explanation:
How many sugar molecules are present in 300 mL of a 2.0 M solution? (The formula for sugar is C12H22O11) AND ADD STEPS PLEASE
Answer: 3.6 x 1023 molecules and 0.143 Litres
classify the following elements under metals, non metals and metalloids, boron, zinc Mercury, silicon, oxygen, nitrogen, sodium
Answer:
Zinc mercury transition metal
Silicon boron metalloid
Oxygen nitrogen non metal
Sodium alkali metal
Explanation:
Using the diagram, which two planes would intersect in HG?
Answer please .. :)
Answer:
I think D
Explanation:
it has both H and G in the planes.
different between methane and ethane.
what is the function of a prism
Answer:
Prisms are sometimes used for the internal reflection at the surfaces rather than for dispersion. If light inside the prism hits one of the surfaces at a sufficiently steep angle, total internal reflection occurs and all of the light is reflected.
Explanation:
Prism, in optics, piece of glass or other transparent material cut with precise angles and plane faces, useful for analyzing and reflecting light. An ordinary triangular prism can separate white light into its constituent colours, called a spectrum.
Atoms of which of the following elements have the most similar chemical
properties as cadmium (Cd) atoms?
A Zinc (Zn)
B Gold (Au)
C Copper (Cu)
D Silver (Ag
free brainlist
Answer: the answer is A. Zinc (ZN)
Explanation: jus did a quiz with this quest thx for da points good luck :D
Work out the empirical formula of a compound that contains 35% of nitrogen , 5% of hydrogen and 60% of oxygen.
Answer:
[tex]H_5N_5O_6[/tex]
Explanation:
Hello there!
In this case, for the determination of empirical formulas, it is firstly necessary to assume the given percentages of the constituent atoms as the masses so we can compute their moles in the formula:
[tex]n_N=\frac{35gN}{14.01g/mol} =2.5molN\\\\n_H=\frac{5g}{1.01 g/mol}=5molH\\\\n_O=\frac{60g}{16 g/mol} =3molO[/tex]
Thus, we need to divide the resulting moles, by the fewest ones (those of nitrogen) in order to determine the coefficients in the formula:
[tex]N:\frac{2.5}{2.5}=1\\\\H:\frac{5}{2.5}=2\\\\O:\frac{3}{2.5} =1.2[/tex]
However, we need to turn all these numbers, whole numbers, so we multiply by 5 to get:
[tex]H_5N_5O_6[/tex]
Best regards!
Use your knowledge of atoms, bonding, and the periodic table to complete the chemical equation .”CH4 + O2
and predict the products of the chemical reaction on your paper. Label this equation “Initial Prediction.
Answer:
CH4 + O2 = CO2 + H2O.
Answer:
CH4 + O2 = CO2 + H2O.
Explanation:
how many molecules are in 45.0 g of water
An airplane flies with an average speed of 600 km/hr. How much time will it take to travel 1950 km?
Time = distance ÷ speed
Time = 1950 ÷ 600
Time = 3.25 hours ( 3 hours 15 minutes )
If you're wearing a yellow shirt in magenta light, what colour does the shirt look like now?
