Which compound is an example of a binary ionic compound?

Answers

Answer 1

Answer: Examples of binary ionic compounds include calcium chloride (CaCl2), sodium fluoride (NaF), and magnesium oxide (MgO), whilst examples of binary covalent compounds include water (H2O), and sulfur hexafluoride (SF6).Hope this helps!!!

Answer 2

Answer:

MgF2 is a compound, i hope this helps people

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How do you study well for a chemistry test?

Answers

Answer:

Learning Chemistry takes time! ...

Dig Deep on practice problems. ...

Do the reading and warm up problems BEFORE lecture. ...

Lab Sections really do matter. ...

Ask lots and lots of questions! ...

Study chemistry when you are awake! ...

Study more efficiently – not just more! ...

Take advantage of study tips from VPTL:

Explanation:

Chemistry requires both memorization and problem-solving, making it a particularly demanding subject. 5. Study two hours for each lecture hour and one hour for each lab hour each week (this is about 12 hours a week for 4 credit hour chemistry courses).

Hope this helps! :D

The action of some commercial drain cleaners is based on the following reaction: 2 NaOH(s) + 2 Al(s) + 6 H2O(l) → 2 NaAl(OH)4(s) + 3 H2(g) What is the volume of H2 gas formed at STP when 6.32 g of Al reacts with excess NaOH?

Answers

Answer : The volume of $H_2$ gas formed at STP is 7.86 liters.

Explanation :

The balanced chemical reaction will be:

$2NaOH(s)+2Al(s)+6H_2O(l)\rightarrow 2AnAl(OH)_4(s)+3H_2(g)$

First we have to calculate the moles of $Al$ .

$\text{Moles of }Al=\frac{\text{Mass of }Al}{\text{Molar mass of }Al}$

Molar mass of Al = 27 g/mole

$\text{Moles of }Al=(6.32g)/(27g/mole)=0.234mole$

Now we have to calculate the moles of $H_2$ gas.

From the reaction we conclude that,

As, 2 mole of $Al$ react to give 3 mole of $H_2$

So, 0.234 moles of $Al$ react to give $(0.234)/(2)* 3=0.351$ moles of $H_2$

Now we have to calculate the volume of $H_2$ gas formed at STP.

As, 1 mole of $H_2$ gas contains 22.4 L volume of $H_2$ gas

So, 0.351 mole of $H_2$ gas contains $0.351* 22.4=7.86L$ volume of $H_2$ gas

Therefore, the volume of $H_2$ gas formed at STP is 7.86 liters.

If the Kelvin temperature of a gas is tripled and the volume if doubled, the new pressure will be ___. A. 3/2 the original pressure B. 1/6 the original pressure C. 5 times the original pressure D. 2/3 the original pressurethe answer isnt b or c

Answers

The answer is 3/2 the original pressure. The concept behind this is the ideal gas law wherein it states that Pressure (P) times volume(V) is equal to number of moles (n) times ideal gas constant (R ) times temperature (T). Since you’re trying to calculate for the pressure you use P=nRT/V. Input 3 to Temperature and 2 to volume. You’ll get a pressure of 3/2 which is 3/2 times the original pressure.

Elements can combine to form molecules, like o2 or co2. elements combine to form molecules and these elements are joined together by a. chemical bonds.
b. nuclear energy.
c. sharing nuclei.
d. attractive forces.

Answers

Elements can combine to form molecules, like o2 or co2. elements combine to form molecules and these elements are joined together by chemical bonds i.e covalent bond in this molecule so option A is correct
hope this helps

Answer:

a. Chemical bonds.

Explanation:

Hello,

In this case, it is necessary to know that when two elements are not stable by their own they should bond with an other atom of the same element via chemical bonds whereby the valence electrons act as bridges connecting the atoms. Some examples are diatomic-gaseous hydrogen, oxygen, nitrogen, chlorine, iodine, fluorine and bromine. Moreover, such chemical bonding is represented by lines binding the elements as shown on the attached picture.

Best regards.

Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food nor tablets are hard like iron? Why?

Answers

If the food and the tablets would be hard then how will the body digest it

because it would not be possible to eat them if they would be hard

Ethene is the first member of the a. Alkane series
b. Alkyne series
c. Saturated hydrocarbons
d. Unsaturated hydrocarbons
e. Aromatic hydrocarbons

Answers

It will be:

b. Alkyne* series

* You have done a spelling mistake here. It will be "Alkene" not "Alkyne".

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Write the chemical name for MnS2?

a) NaClO3 -> NaCl + O2------------------------DESCOMPOSICION b) HNO3 +Fe -> H2 + Fe (NO3)2------------SIMPLE SUSTITUCION c) Kl + Pb (NO3)2 -> Pbl2 + KNO3--------DOBLE SUSTITUCION d) C + O2 -> CO2-----------------------COMBINACION o SINTESIS e) Ca(HCO3)2 -> CaCO3 + CO2 + H2O--no estoy seguro pero en todo caso DESCOMPOSICION

Which type of radiation is the smallest in size?