What is the pH of a 0.0001 M aqueous solution of HCI?

What volume, in L, of a 6.3 M K2SO4 solution contains 44.1 g of K2SO4?

Alenkinab [10]

Answer:

= 1.60 L

Comment if you need step to step explanation.

8 0

3 years ago

How is ice cream made???? Hurry plsss!!!

castortr0y [4]

Answer:

Milk, cream, milk solids, sugars, modifying agents and flavourings are blended together in stainless steel vats.

The mix is homogenised to create a consistent texture.

The mix is pasteurised by heating at 82-85°C for 15 seconds then cooled to destroy bacteria.

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7 0

3 years ago

What’s the density if the mass is 40.8g and the volume is 60mL?

luda_lava [24]

Answer:

We have the final answer as

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 40.8 g

volume = 60 mL

The density is

$density = \frac{40.8}{60} \\$

We have the final answer as

Hope this helps you

8 0

3 years ago

calculate the wavelength of light associated with the transition from n=1 to n=3 in the hydrogen atom?

inessss [21]

<u>Answer:</u>

$\Delta E=E_{final}-E_{initial}$

$\Delta E=-1312[\frac{1}{(n_f^2)}-\frac {1}{(n_i^2 )}]KJ mol^{-1}$

$\Delta E=-1312[\frac{1}{3^2)}-\frac {1}{(1^2 )}]KJ mol^{-1}$

$\Delta E=-1312[\frac{1}{(9)}-\frac {1}{(1 )}]KJ mol^{-1}$

$\Delta E=-1312[0.111-1]KJ mol^{-1}$

$\Delta E=1166 KJ mol^{-1}$

$\frac{=1166,000 \mathrm{J}}{6.022 \times 10^{23} \text { photons }}$

$=193623 \times 10^{-23} \frac {J}{photon}$

$\Delta E=1.93623 \times 10^{-18} \frac {J}{photon}$

$\Delta E=\frac {h\times c}{\lambda} \\\\=\frac {(6.626\times 10^{-34} J s \times 3 \times 10^8 ms^{-1})}{\lambda}$

h is planck's constant

c is the speed of light

λ is the wavelength of light

$\lambda =\frac {h\times c}{\Delta E}\\\\=\frac {(6.626\times10^{-34} J s\times3 \times 10^8 ms^{-1})}{(1.93623\times10^{-18} J/photon)}$

Wavelength

$\lambda =10.3 \times 10^{-8} m \times \frac {(10^9 nm)}{1m} =103 nm (Answer)$

<em>Thus, the wavelength of light associated with the transition from n=1 to n=3 in the hydrogen atom is </em><u><em>103 nm.</em></u>

7 0

3 years ago

A 2.0 mL sample of a liquid has a mass of 44.0 g. What is the density of the liquid?

riadik2000 [5.3K]

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume}$

From the question

mass of liquid = 44 g

volume = 2 mL

The density of the liquid is

$density = \frac{44}{2}$

We have the final answer as

Hope this helps you

8 0

3 years ago