How do you tell if a reaction is endothermic or exothermic using only the written formula

Answers

Answer 1

Answer: You know if it's endothermic or exothermic by doing the enthalpy reaction. If the change of temperature is negative then it is exothermic, while positive is endothermic. If you get -22K then its exothermic, but if you get +22 its endothermic.

Related Questions

Determine how many moles of O2 are required to react completely with 6.7 moles C6H14.
In Act IV, Scene 1, of A Midsummer Night's Dream, as the drama nears resolution, to whom does Demetrius address these lines?My love to Hermia, Melted as the snow, seems to me now As the remembrance of an idle gaud
Given the reaction: 4Al(s)+3O2(g)==2Al2O3(s) What is the minimum number of grams of oxygen gas required to produce 1.00 mole of aluminum oxide
What is mass number?
Which of the following is true about photosynthesis? a) It is an exothermic reaction. b) It is an endothermic reaction. c) It produces carbon dioxide. d) It occurs in animals. Atomic theory is a) subject to change if new information is discovered. b) a solution to the problem of differing isotopes. c) unchangeable. d) a descriptive table that lists all of the elements. Two nonmetals from Group 16 are likely to form a(n) a) metallic bond. b) double bond. c) ionic bond. d) covalent bond.

Boyle’s Law a. q = mcΔT
b. q = Hvm
c. P₁V₁ = P₂V₂
d. D = m/V
e. K = C + 273

Answers

the answer is C! We actually just learned this in chemistry xD

Which among the following will make lime water look milky?Immersive Reader(1 Point)
O₂
CaCO₃
Ca(OH)₂

Answers

Which among the following will make lime water look milky

option C) Ca(OH)₂

What are the functions of protein in organisms?

Answers

Proteins make up many many important structures in our cells ( ex : receptors , Enzymes , integral proteins and so on )

Temperature and kinetic energy have a relationship.

Answers

Answer:

$\boxed {\boxed {\sf Temperature=Average \ kinetic \ energy}}$

Explanation:

Temperature is also known as the average kinetic energy in a substance.

If there is an absence of heat in a substance, the particles move slower and the kinetic energy decreases. The temperature will be lower, because there is less kinetic energy.

If heat is present or applied, the particles move more, so kinetic energy increases. The temperature will be higher, since there is more kinetic energy.

So, the relationship is: temperature is the measure of average kinetic energy.

Answer:

DIRECT

Explanation:

How to know if two elements will form a covalent bond

Answers

Answer:

If they are both non-metals

Explanation:

covalent = non-metal + non-metal

ionic = metal +non-metal

metallic = metal +metal

Liquid octane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water. If 1.75g of water is produced from the reaction of 4.6g of octane and 4.8g of oxygen gas, calculate the percent yield of water... ___%?