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weqwewe [10]
3 years ago
14

Will give 50 points, If a decrease in temperature accompanies a reaction, what occurred?

Chemistry
2 answers:
solmaris [256]3 years ago
6 0
Answer: Energy is Being absorbed
Ede4ka [16]3 years ago
3 0

Answer:

A.

Explanation:

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A student creates a model that displays a cross-section of a metal wire wrapped in plastic insulation. Which statement best desc
artcher [175]

Cross-section of a metal wire wrapped in plastic insulation the metal wire is an element.

<h3>What is an element?</h3>

An element is a substance or material that cannot be affected by an external substance or cannot be broken down by any reaction.

Metal wire is serving as an element, it should not be easily broken or penetrated as an insulator.

Therefore, Cross-section of a metal wire wrapped in plastic insulation the metal wire is an element.

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3 years ago
How many moles of oxide are in 0.050 g of Iron(III) oxide?
makvit [3.9K]

Answer:

0.00031311017345051

7 0
3 years ago
Please Help !! Brainliest !! ​
Rufina [12.5K]
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Data supports significantly because we can use the testing(depending sample) before and after we use the same object to test the hypothesis.
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3 years ago
how many grams of phosphorus (P4) react with 35.5L of O2 at STP to form solid tetraphosphorus decaoxide
algol [13]

Answer:

mass P4 = 35.998 g

Explanation:

  • P4 + 5O2 → P4O10

∴ STP: P = 1 atm; T = 298 K

∴ V O2= 35.5 L

⇒ nO2 = P.V / R.T

∴ R = 0.082 atm.L/K.mol

⇒ nO2 = ((1 atm)×(35.5L))/((0.082 atm.L/K.mol)(298K))

⇒ nO2 = 1.453 mol O2

⇒ mol P4 = (1.453 molO2)×(mol P4/ 5molO2) = 0.2906 mol P4

∴ Mw P4 = 123.895 g/mol

⇒ mass P4 = (0.2906 mol P4)×(123.895 g/mol) = 35.998 g P4

4 0
3 years ago
What is the sum of the coefficients when the equation is balanced with the smallest whole numbers? __BaCl2 + __Fe2(SO4)3 → __FeC
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Explanation:

Hphphphphphphphohoohohhpph

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