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4 years ago

A hypothesis is based on the analysis of data collected in a controlled

Chemistry

2 answers:

kiruha [24]4 years ago

6 0

True? I really don’t know but ones someone

Inga [223]4 years ago

6 0

The answer is false because a hypothesis is a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

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Enter your answer in the provided box. Calculate the volume of a 1.420 M NaOH solution required to titrate 40.50 mL of a 1.500 M

Nikolay [14]

Explanation:

Below is an attachment containing the solution.

7 0

3 years ago

Please help

KonstantinChe [14]

Answer: There are 0.5 grams of barium sulfate are present in 250 of 2.0 M $BaSO_{4}$ solution.

Explanation:

Given: Molarity of solution = 2.0 M

Volume of solution = 250 mL

Convert mL int L as follows.

$1 mL = 0.001 L\\250 mL = 250 mL \times \frac{0.001 L}{1 mL}\\= 0.25 L$

Molarity is the number of moles of solute present in liter of solution. Hence, molarity of the given $BaSO_{4}$ solution is as follows.

$Molarity = \frac{mass}{Volume (in L)}\\2.0 M = \frac{mass}{0.25 L}\\mass = 0.5 g$

Thus, we can conclude that there are 0.5 grams of barium sulfate are present in 250 of 2.0 M $BaSO_{4}$ solution.

7 0

3 years ago

Name the solutes that raises the boiling point of water the most.

Butoxors [25]

Non-volatile solutes such as salt raises the boiling point of water. Hope the answer helps! Good luck!

3 0

3 years ago

Upper n subscript 2 (g) plus 3 upper H subscript 2 (g) double-headed arrow 2 upper N upper H subscript 3 (g). At equilibrium, th

artcher [175]

Answer:

The <u>equilibrium constant</u> is:

$k_c=0.0030M^{-2}$

Explanation:

The correct equation is:

N₂(g) + 3H₂(g) ⇄ 2NH₃(g)

Thus, with the equilibrium concentrations you can calculate the equilibrium constant, Kc.

The equation for the equilibrium constant is:

$k_c=\dfrac{[NH_3]^2}{[N_2]\cdot [H_2]^3}$

Substituting:

$k_c=\dfrac{(0.105M)^2}{(1.1M)\cdot (1.50M)^3}$

$k_c=0.0030M^{-2}$

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4 years ago

Does anyone know how to do number 15?

vovikov84 [41]

Answer:

yes i do 980

Explanation:

i899 1/2

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3 years ago