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Scorpion4ik [409]

3 years ago

9

When a white powder is added to a liquid in a beaker at room temperature, the beaker becomes too hot to touch. What kind of reac

tion is this an example of?
A. a fusion reaction
B. a combustion reaction
C. an exothermic reaction
D. an endothermic reaction

2 answers:

Varvara68 [4.7K]3 years ago

6 0

<span>C. an exothermic reaction
</span>

liberstina [14]3 years ago

3 0

The answer is <span>an C.exothermic reaction</span>

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Answer:

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3 years ago

How mant liters at STP are in 0.575 moles of Kr

gizmo_the_mogwai [7]

Answer:

12.9 L Kr

General Formulas and Concepts:

<u>Chemistry - Gas Laws</u>

Using Dimensional Analysis
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Explanation:

<u>Step 1: Define</u>

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<u>Step 2: Identify Conversions</u>

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8 0

3 years ago

A sample that is 74.5 percent chloride by mass is dissolved in water and treated with an excess of

12345 [234]

Answer:

Total mass of original sample = 0.38 g

Explanation:

Percentage of chloride = 74.5%

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Mass of original sample = ?

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