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3 years ago

What are some remarkable properties of water

Chemistry

1 answer:

frosja888 [35]3 years ago

7 0

Explanation:

Water can dissolve in many things because of it's polarity and surface tension.
Water is the only substance that is lighter in its solid form.

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Hundreds of years ago, it was believed by many that our solar system was Geocentric. This means that Earth is at the center of t

Artyom0805 [142]

Answer:

B) Earth and all the other planets orbit the Sun.

Explanation:

A) This one is basically what people used to think, that the sun and other planets orbited around Earth. We know now that this is not true.

C) We know that no planets orbit around Earth.

D) The Sun does not orbit around Earth, the Earth orbits around the Sun.

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3 years ago

elixir [45]

Answer:

no le entiendo pero si me se la respuesta ya tu sabe ✨✨✨✨

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3 years ago

Brainliest if correct!!!!!

BlackZzzverrR [31]

Answer:

Explanation:

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2 years ago

Read 2 more answers

What is the molarity (M) of chloride ions in a solution prepared by mixing 155 ml of 0.276 M calcium chloride with 384 ml of 0.4

sesenic [268]

Answer: The concentration of $Cl^-$ ions in the resulting solution is 1.16 M.

Explanation:

To calculate the molarity of the solution after mixing 2 solutions, we use the equation:

$M=\frac{n_1M_1V_1+n_2M_2V_2}{V_1+V_2}$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of the $CaCl_2$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of the $AlCl_3$

We are given:

$n_1=2\\M_1=0.276M\\V_1=155mL\\n_2=3\\M_2=0.471M\\V_2=384mL$

Putting all the values in above equation, we get

$M=\frac{(2\times 0.276\times 155)+(3\times 0.471\times 384)}{155+384}\\\\M=1.16M$

The concentration of $Cl^-$ ions in the resulting solution will be same as the molarity of solution which is 1.16 M.

Hence, the concentration of $Cl^-$ ions in the resulting solution is 1.16 M.

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3 years ago

Elena held a rock weighing 1 N in her hand. The rock has no velocity. <br> KE________?

nignag [31]

KE = 0

<h3>Further explanation </h3>

Energy is the ability to do work

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:

$\large{\boxed{\bold{KE=\frac{1}{2}mv^2}}}$

So for two objects that have the same speed, the greater the mass of the object, the greater the kinetic energy

The stone in hand is in a motionless state (at rest) so that its velocity (v) = 0, so it has no kinetic energy

But this stone can have <em>potential energy that is gained due to its height</em>

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3 years ago