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3 years ago

Which of the following is an experiment?

2 answers:

8 0

D! because when you record something you will probably analyze the results and those are two big KEY components of an Experiment!

Tresset [83]3 years ago

6 0

Answer: D) recording the high and low temperature at a particular location every day.

Explanation:

A experiment is a process which is conducted or performed to either support, refute or validate the hypothesis. It involves the detail repeatable procedure and the logical analysis of the outcomes of the results. It involves different variables which are compared to obtain the outcome of the experiment. For example the amount of water used everyday responsible for the plant height.

Among the options given, D) recording the high and low temperature at a particular location every day. is the correct option, temperature is a variable in the experiment. The change in the daily temperature of a location can be noted as observation of the experiment. This observation can be used to record the average temperature of the location.

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Ham radio operators often broadcast on the 6-meter band. The frequency of this electromagnetic radiation is MHz. [speed of light

Volgvan

Answer:

50 MHz

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength$

c is the speed of light having value $3\times 10^8\ m/s$

Given, Wavelength = 6 m

Thus, Frequency is:

$Frequency=\frac{c}{Wavelength}$

$Frequency=\frac{3\times 10^8}{6}\ Hz$

$Frequency=50\times 10^{6}\ Hz$

Also,

Also, 1 Hz = $10^{-6}$ MHz

So, Frequency = 50 MHz.

8 0

3 years ago

Determine the hybrid orbital of this molecule.

Pavel [41]

The hybrid orbital of this molecule is $sp^3$ . Hence, option C is correct.

<h3>What is hybridisation?</h3>

Hybridization is defined as the concept of mixing two atomic orbitals to give rise to a new type of hybridized orbitals.

In this compound, $sp^3$ a hybrid orbital makes I-O bonds. Due to $sp^3$ hybridization iodate should have tetrahedral geometry but because of the presence of lone pair of electrons the shape of $IO^{3-}$ the ion is pyramidal.

The hybrid orbital of this molecule is $sp^3$ . Hence, option C is correct.

Learn more about hybridisation here:

brainly.com/question/23038117

#SPJ1

7 0

2 years ago

What is an organ that absorbs water and vitamin K from digested food

TEA [102]

The Large intestine absorbs water and vitamin K from digested food.

3 0

4 years ago

What can you conclude from the fact that electrons orbit far away from atomic nuclei?

suter [353]

Electrons are extremely small. Atoms are comprised mostly of empty space. Protons have a positive charge.
Hope this helps.

5 0

3 years ago

What is the molarity of a solution in which 250 grams of NaCl are dissolved in 2.9 L of water?

Maksim231197 [3]

Answer:

About 1.48 M.

Explanation:

The formula for molarity is mol/L.

So firstly, you must find the amount of moles in 250 grams of NaCl.

I do this by using stoichiometry. First, I find how nany grams are in a single mole of NaCl. This is around 58.44 grams/mole. Now that I know this, I can now use a stoich table. (250 g NaCl * 1 mol NaCl / 58.44 g NaCl). I plug this into my calculator.

I get that 250 grams of NaCl is equal to about 4.28 moles.

Now I just plug into the formula!

4.28 moles/2.9 L = about 1.48

I've attached a picture of my personal notes below which shows work I have done in similar equations.

3 0

2 years ago