3 years ago

Which statement best describes PH of pure water

1 answer:

3 0

The concentration of hydronium ions equals that to hydroxide ions the answer is A) pH is equal tot he negative log of hydrogen. the pH of water is 7 which equal to 10^-7 of H+ and OH- ions.

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Are formed when atoms bond together

Nadya [2.5K]

They form chemical bonds

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2 years ago

Help please?!??!??!?!?!

GalinKa [24]

Answer:

Explanation:

Matter is anything that has weight and occupies space. Weight is synonymous to mass

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3 years ago

Gas law problem: A gas has a volume of 800 mL at -25℃ and 600 kPa. What would the volume of the gas be at 227℃ and 1000 kPa?

Sati [7]

<h3><u>Answer;</u></h3>

= 930.23 mL

<h3><u>Explanation</u>;</h3>

Using the combined gas law;

P1V1/T1 = P2V2/T2

Where; P1 = 600 kPa, V1 = 800 mL, and T1 = -25 +273 = 258 K, and

V2= ?, P2 = 1000 kPa, and T2 = 227 +273 = 500 K

Thus;

V2 = P1V1T2/T1P2

= (600 ×800 ×500) / (258 × 1000)

= 930.23 mL

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2 years ago

Conversion of gaseous nitrogen to liquid nitrogen is an

miss Akunina [59]

Answer:

true

Explanation:

you can't change it back, it's chemically changed

8 0

2 years ago

1.What is the specific heat capacity of granite when 20 kg absorbs 237 000 J of heat energy, causing its temperature to increase

Natalka [10]

<u>Given</u> :

Amount = 20 kg
Heat energy absorbed = 237,000 J
Temperature change = 15 °C

<u>Formula applied</u> :

$\boxed {Q = mc \triangle T}$

Q = absorbed heat
m = mass
c = specific heat capacity
ΔT = temperature change

Let's solve for c !

⇒ 237,000 = 20 × c × 15

⇒ c = 237,000 ÷ 300

⇒ $\boxed {c = 790 J kg^{-1} K^{-1}}$

∴ The specific heat capacity of granite is <u>790 J kg⁻¹ K⁻¹</u>.

5 0

1 year ago