Answer:
An endothermic process is any process with an increase in the enthalpy H (or internal energy U) of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system. It may be a chemical process, such as dissolving ammonium nitrate in water, or a physical process, such as the melting of ice cubes.
Based upon the context clues of the lesson, what do you think will be the relationship between Charles and his parents
O it will be deceitful and confusing
It will be apathetic and non-caring
It will be wonderful and loving
o it will be full of anger and fighting
Answer:
It is the first or second one. The other two didn't work for me.
Explanation:
Hope this helps :)
Answer:
It will be apathetic and non-caring
Explanation:
What do we call living things that share characteristics including processes that make life possible?
Question 3 options:
chemical properties
structure
organisms
energy
How many moles are equal to 157.8g of CaCl2?
Answer:
Explanation:
K: 157.8 g CaCl2
U: ? mol CaCl2
1Ca = 1(40.08) = 40.08
2 Cl = 2(35.45) =+70.90
110.98
157.8 g CaCl2 1 mol CaCl2
x
1 mol CaCl2 110.98 g CaCl2
Electron-dot diagrams Show all the electrons in an element?
Answer:
flase
Explanation:
i got the answer from khan
How many atoms of each element are present in
Si (SO4)3 Ca(OH)2
3.2 moles of K2SO3
4 moles of oxygen
Answer:
1.156x10²⁵ atoms and 4.8x10²⁴ atoms of oxygen
Explanation:
1 mole of a molecule X contains 6.022x10²³ molecules. In a molecules as H₂O, for example, there are 3 atoms (2 of H and 1 of O).
Thus, in 1 molecule of K₂SO₃ there are 6 atoms (2 of K, 1 of S, 3 of O). In 3.2 moles there are:
3.2mol K₂SO₃ * (6.022x10²³ molecules / 1mol) = 1.927x10²⁴ molecules.
The atoms are:
1.927x10²⁴ molecules * (6atoms / molecule) =
1.156x10²⁵ atoms
In 4 moles of oxygen, O₂, there are 2 atoms per molecule :
4mol * (6.022x10²³ molecules / mol) = 2.4x10²⁴ molecules * (2atom / molecule) =
4.8x10²⁴ atoms of oxygen
4.Which sentence BEST describes the relationship between the plates in Earth's crust and the sizes of the landmasses on top of the plates?
A.The plates and the landmasses are approximately the same sizes.
B.The plates are much smaller than the size of the landmasses.
C.The plates are much larger than the size of the landmasses.
D. The plates are different in size from the landmasses.
Answer:
D. The plates are different in size from the landmasses.
Explanation:
The tectonic plates that are also called lithospheric plates are very massive and irregular-shaped rocks that are composed of both the continental and the oceanic lithosphere and they may vary from a few hundred to thousands of square km.Blue green and red are _____ colors of light ?
Answer: the
Explanation:
how is geologic activity & geologic structure similar?
Explanation:
Geological activity determines geological structures. The prevalent types and forms of tectonic working in a place will control the form of structure that can be found in a terrain.
In volcanic region, it is common to see volcanic structures of different types such as calderas, strato-volcano etc. These structures are formed by the volcanic activities. Also, in a karst topography, we find sink holes, stalactites and stalagmites etc. due to the nature of the geologic activities going on. Some sedimentary rocks shows cross bedding due to the environment where they form.So, geologic activities controls the structure found in an area
Question 4 of 5
In the suburbs, per capita consumption of fossil fuels is very high. What is the
most likely effect of this?
A. A decrease in nitrates in the soil
B. An increase in carbon dioxide in the atmosphere
O
C. An increase in phosphates in groundwater
D. An increase in oxygen in the air
SUBMIT
Answer:
B
Explanation:
Answer:
B. An increase in carbon dioxide in the atmosphere
Explanation: