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What is a crosscutting concept for global temperature, explain.
Answers
Answer:
They include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.
Explanation:
As such, they are a way of linking the different domains of science.
Related Questions
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25. In the formula for a molecular compound, which atom generally comes first? You may wentto refer to a periodic table.
An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. What other characteristic does the radiation have?some shielding required no mass large mass high penetrating power
Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could sheuse to produce the hydrogen she needs?NaOH and oilZn and KOHH2SO, and CaCO0 Mg and HCII’ll mark your reply if the answer was correct.
Answers
The basic form of matter is the atom. Atoms can be distinguished from each other and they are known as elements. When elements combined, they form compounds. The can either contain two or more elements. When you combined compounds of different types or classes, they form mixtures.
(2) HCl
(3) HBr
(4) HI
Answers
Final answer:
HCl is the most polar bond, as greater the difference in electronegativity, the more polar the bond. Here, Chlorine is more electronegative than Hydrogen, Bromine, and Iodine, making the HCl bond most polar.
Explanation:
The most polar bond in the list provided is HCl. Polarity in bonds is determined by the difference in electronegativity between the two atoms in the bond. The greater the electronegativity difference, the more polar the bond. Chlorine (Cl) is more electronegative than Hydrogen (H), Bromine (Br), and Iodine (I), and so the bond between Cl and H is the most polar. The other three options (Cl2, HBr, HI) are either bonds between atoms of the same element (and therefore nonpolar because the electrons are shared equally) or are less polar due to the lower electronegativity difference.
Learn more about Polarity of Bonds here:
#SPJ3
Answers
ANSWER
Theory of relativity.
In the year 1905 a famous mathematician and physicist named Albert Eisenstein gave a theory which shows relation between time and motion.
yes i am talking about special theory of relativity.
actually theory of relativity is divided in two parts
1. special theory of relativity
and
2. general theory of relativity.
✔special theory of relativity is based on the time and motion.
there are two frame of references.
1. inertial frame of reference
and
2. inertial frame of reference.
in inertial frame of reference we talk about when body is moving with constant velocity.
and
in non inertial frame of reference we talk about unconstant velocity.
in the special theory it is used that the time and motion are relative.
and there is a postulate that
✳ Nothing can travel faster than the speed of light that is.
299692458m/s and universe is limited at this speed so if a object moves near the speed of light then the time slows down for that object in order to maintain that speed.
Now
Theory of general relativity.
✔ after giving special relativity Einstein was not satisfied and wanted to know about how gravitational force can affect time.
so he gave general theory of relativity.
in this we talk about the gravitational force.
space time curvature
fabric of cosmos and many more thing
in this Einstein showed that how gravitational force affect the time and also showed that the planets revolve around the sun because of the curve in space time
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b. Calculate the molarity of the solution.
c. Calculate the mole fraction of the salt in the solution.
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The molarity of the solution is 5.018 mol/L and molality of the solution 5.9846 mol/kg.
Assume 100 g of solution the salt concentration- 35 % and water will be 65 %.
So,
mass of salt = 35 g
mass of water = 65 g
Number of moles,
So,
moles of salt = 35 g / 90 (g/mol) = 0.389 mole
moles of water = 65 / 18 = 3.6111 mole
Volume of solution,
volume = 100 g / ( 1.29 g/ml)
volume of solution = 77.52 ml = 0.07752 L
a)
molality = 0.389 mol / 0.065 kg
molality = 5.9846 mol/kg
b)
molarity = moles of salt / volume of solution (L)
molarity = 0.389 mol / 0.07752 L
molarity = 5.018 mol/L
c)
mole fraction of salt = moles of salt / total moles
mole fraction of salt = 0.389 mol / ( 0.389 + 3.6111)
mole fraction of salt = 0.09725
To know more about Molarity,
Answer:
a) 5.9846 mol/kg
b) 5.018 mol/L
c)0.09725
Explanation:
consider 100 g of solution
now
since the salt is 35 % , water will be 65 %
now
mass of salt = 35 g
mass of water = 65 g
we know that
moles = mass / molar mass
so
moles of salt = 35 g / 90 (g/mol) = 0.389 mol
moles of water = 65 / 18 = 3.6111 mol
now
volume of solution = mass of solution / density of solution
volume of solution = 100 g / ( 1.29 g/ml)
volume of solution = 77.52 ml
volume of solution = 0.07752 L
a)molality = moles of salt / mass of water (kg)
molality = 0.389 mol / 0.065 kg
molality = 5.9846 mol/kg
b)
molarity = moles of salt / volume of solution (L)
molarity = 0.389 mol / 0.07752 L
molarity = 5.018 mol/L
c)
now
total moles in the solution = moles of salt + moles of water
total moles in the solution = 0.389 + 3.6111
total moles in the solution = 4 mol
now
mole fraction of salt = moles of salt / total moles
mole fraction of salt = 0.389 mol / 4 mol
mole fraction of salt = 0.09725
Answers
C- it emitted an alpha particle in a nuclear reaction (just took the edg test)