Reaction arrows are used to describe the state or progress of a reaction. 2.1 The Chemical Reaction Arrow. The chemical reaction arrow is one straight arrow pointing from reactant(s) to product(s) and by-products, sometimes along with side products. A → B. It is the most widely used arrow.
Boron is a chemical element with the symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element in the Solar System and in the Earth's crust
The C5 (C5) fraction is a co-product of naphtha cracking and is used as a raw material for synthetic rubber and petroleum resins.
Deuterium
Deuterium is frequently represented by the chemical symbol D. Since it is an isotope of hydrogen with mass number 2, it is also represented by 2. H. .
Unimolecular Elimination (E1) is a reaction in which the removal of an HX substituent results in the formation of a double bond. It is similar to a unimolecular nucleophilic substitution reaction (SN1) in various ways. One being the formation of a carbocation intermediate.
Aqueous (aq.): In the presence of water, often meaning water is the solvent. Aqueous NaCl. Anhydrous NaCl.
Hydrogen is the chemical element with the symbol H and atomic number 1. ... Since hydrogen readily forms covalent compounds with most nonmetallic elements, most of the hydrogen on Earth exists in molecular forms such as water or organic compounds.
Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed. Enzymes are naturally occurring catalysts responsible for many essential biochemical reactions.
Kp is the equilibrium constant calculated from the partial pressures of a reaction equation. It is used to express the relationship between product pressures and reactant pressures. It is a unitless number, although it relates the pressures.
Hope this helps a bit?
Answer:
There is 96200 J or 96 kJ of heat released.
Explanation:
<u>Step 1: </u>Data given
Mass of helium = 250 grams
Temperature = 200 K
Temperature is raised by 74 K
The heat capacity of helium = 20.8 J/mol*K
Molecular weight for helium = 4 g/mol
<u>Step 2:</u> Calculate moles of Helium
Moles of Helium = mass of Helium / molar mass of helium
Moles of helium = 250 grams / 4g/mol
Moles of helium = 62.5 moles
<u>Step 3:</u> Calculate heat
Q = n*c*ΔT or
⇒ with Q = the heat released in Joule
⇒ with n = moles of helium = 62.5 moles
⇒ with c = the heat capacity of helium = 20.8 J/mol*K
⇒ with ΔT = the change in temperature = T2 - T1 = 74 K
Q = 62.5 mol * 20.8 J/mol*K * 74 K
Q = 96200 J = 96 kJ
Since the temperature is raised, this is an exothermic reaction. The heat is released.
There is 96200 J or 96 kJ of heat released.
The major species in solution when solid ammonium bromate is dissolved in water is shown below
C. Spacecraft are built to be airtight.
