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3 years ago

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Why would you use a solution, such as a cabbage pH indicator, to measure the pH of household items? to see if food went bad to t

est the safety of water to make sure conditions are safe to use up old cabbage

2 answers:

san4es73 [151]3 years ago

4 0

Answer: ABC

Explanation:

storchak [24]3 years ago

4 0

Answer: to see if food went bad, to test the safety of water, to make sure conditions are safe

Explanation:

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A sample of nitrogen is initially at a pressure of 1.7 kPa, a temperature of -10 C and a volume of 7.5 m3. Then the volume is de

zhannawk [14.2K]

Answer:

$\boxed{\text{2.6 kPa}}$

Explanation:

To solve this problem, we can use the Combined Gas Laws:

$\dfrac{p_{1}V_{1} }{T_{1}} = \dfrac{p_{2}V_{2} }{T_{2}}$

Data:

p₁ = 1.7 kPa; V₁ = 7.5 m³; T₁ = -10 °C

p₂ = ?; V₂ = 3.8 m³; T₂ = 200 K

Calculations:

(a) Convert temperature to kelvins

T₁ = (-10 + 273.15) K = 263.15 K

(b) Calculate the pressure

$\begin{array}{rcl}\dfrac{1.7 \times 7.5 }{263.15} & = & \dfrac{p_{2} \times 3.8}{200}\\\\0.0485 & = & 0.0190p_{2}\\p_{2} & = & \textbf{2.6 kPa}\\\end{array}\\\text{The new pressure of the gas is \boxed{\textbf{2.6 kPa}}}$

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2 years ago

Which mixture can be separated based on differences in particle size of the components?

Aleksandr [31]

Heterogenous mixtures can separates due to differences in size of components

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3 years ago

Why is water said to be universal solvent?

Pachacha [2.7K]

Answer:

B

Explanation:

And, water is called the "universal solvent" because it dissolves more substances than any other liquid. This allows the water molecule to become attracted to many other different types of molecules.

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2 years ago

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When combined in the correct ratio hydrogen and oxygen atoms can form water as shown below

Dimas [21]

Answer:molecule of a compound

Explanation:

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3 years ago

H30 + = 1x10 -10m is this acid basic or neutral

gavmur [86]

Answer:Basic

Explanation:

The pH value of the acid is 10.0 which falls within the range of basic substances. A neutral substance has a pH of 7. Any substance with pH greater than 7 is basic while pH less than 7 is for Acidic

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3 years ago