Answer:
∇T = -32°C
Explanation:
T1 = 45°C
T2 = 13°C
∇T =?
∇T = change in temperature = final temperature - initial temperature
∇T = T2 - T1
∇T = 13 - 45
∇T = -32°C
The change in temperature is -32°C
Answer is: synthesis.
Chemical reaction: Ba + F₂ → BaF₂.
Synthesis is type of reaction where two or more compounds (in this reaction barium and fluorine) react to form one product (in this reaction BaF₂).
BaF₂ - barium fluoride, salt, <span>white cubic crystals, soluble in methanol and ethanol.</span>
Answer:
The answer to your question is: mass = 0.760 g
Explanation:
Data
V = 0.285 L
T = 57°C = 330°K
P = 1 atm
R = 0.082 atm L/mol°K
mass = ?
Formula
PV = nRT
n = PV / RT
Substitution
n = (1)(0.285) / (0.082)(330)
n = 0.285 / 27.06
n = 0.011
mW Pentane = (12 x 5) + (12 x 1) = 72 g
72 g of pentane ----------------- 1 mol
x ----------------- 0.0105 mol
x = (0,0105 x 72) / 1
x = 0.756 g ≈ 0.760 g
Hello there!
I am not really sure which part you are talking about but let me answer some of them.
First, you need to read the information they gave you about glucose etc..
13- What is produced in photosynthesis?
"Photosynthesis is essential for all life on earth, because it provides food and oxygen."
Thus, the answer is: Photosynthesis produced food and oxygen.
14- What is the glucose used for?
"The glucose produced is used by the plant for energy and growth."
Thus, the answer is: The glucose used for energy and growth of the plants.
15- What is the oxygen used for?
"The oxygen produced is released into the air for us to breath."
Thus, the answer is: The oxygen used for us to breath.
I hope this helps!
Let me know if you have questions about the answer.
Answer: endothermic
Explanation: Endothermic Reactions. A system of reactants that absorbs heat from the surroundings in an endothermic reaction has a positive (H), because the enthalpy of the products is higher than the enthalpy of the reactants of the system.