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3 years ago

F. fluorite scratches limestone and gypsum

Chemistry

2 answers:

Alenkinab [10]3 years ago

8 0

Answer:

f i thnk

Explanation:

alexira [117]3 years ago

6 0

Answer:

J. Calcite scratches gypsum.

Explanation:

Since limestone and calcite have about the same hardness, either limestone or calcite can be used in the hardness test to identify the softer gypsum.

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. Consider the following reaction: CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g) A reaction mixture initially contains 0.50 M CH4 and 0.7

Soloha48 [4]

Answer:

0.0376

Explanation:

CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g)

start 0.5 0.75 0 0

change -0.11 -0.22 +0.11 +0.44

equilibrium 0.39 0.53 0.11 0.44

$K_{c}=\frac{products}{reactants} =\frac{[CS_{2}][H_{2}]^{4}}{[CH_{4}][H_{2}S]^{2}}=\frac{[0.11][0.44]^{4}}{[0.39][0.53]^{2}} =0.0376$

5 0

3 years ago

suppose it takes 27 min for 1.5 g of sugar to completely react with another reagent we added to the flask. what would the reacti

labwork [276]

The rate of the reaction, given the data is 0.056 g/min

<h3>What is rate of reaction?</h3>

The rate of a reaction is simply defined as the amount converted per unit time. Mathematically, it can be expressed as:

Rate = amount / time

With the above formula, we can obtain the reaction rate. Details below:

<h3>How to determine the reaction rate</h3>

From the question given above, the following data were obtained:

Amount of sugar = 1.5 g
Time = 27 mins
Reaction rate =?

The reaction rate can be obtained as follow:

Reaction rate = amount / time

Reaction rate = 1.5 / 27

Reaction rate = 0.056 g/min

Thus, the reaction rate is 0.056 g/min

Learn more about reaction rate:

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7 0

2 years ago

Fill out blanks using the words: tiny, electrons (x2),shells, neutrons, protons(x2), nucleus, configuration

viva [34]

1. Nucleus, neutrons
2. Tiny
3. Electrons, shells
4. Protons
5. Configuration
6. Electrons
7. Protons

5 0

3 years ago

Why is potasium oxide not used to investigate property of hydrogen gas

Anarel [89]

Because potassium is more reactive than hydrogen

3 0

3 years ago

Perform the following mathematical operations and express the correct answer to the proper number of significant figures or deci

nordsb [41]

Answer: 7.71 + 4.31 + 1.7 + 4.00141= 17.72141

7.71 x 4.31 x 1.7 x 4.00141= 226.04433255

Explanation:

(i) 7.71 + 4.31 + 1.7 + 4.00141

= 7.71000+4.31000+1.70000+ 4.00141 [make like decimals]

= 17.72141 [By adding the corresponding places ]

(ii) 7.71 x 4.31 x 1.7 x 4.00141 =( 7.71 x 4.31) x 1.7 x 4.00141

= 33.2301 x 1.7 x 4.00141

= (33.2301 x 1.7) x 4.00141

= 56.49117 x 4.00141

= ( 56.49117 x 4.00141 )

= 226.04433255

Hence, 7.71 + 4.31 + 1.7 + 4.00141= 17.72141

7.71 x 4.31 x 1.7 x 4.00141= 226.04433255

7 0

3 years ago