CHEMISTRY HIGH SCHOOL

The alkali metals are

Answers

Answer 1

Answer:

Answer:

They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

Hope this helps :)

Answer 2

Answer:

Answer:

Groups one of the periodic table.

Lithium Li

Sodium Na

Potassium K

Rubidium Rb

Cesium Cs

Francium Fr

Related Questions

Acetylene gas (C2H2) is produced as a result of the following reaction. CaC2 (s) + 2H20(I) -> C2H2(g) + Ca (OH)2 (aq) a. If 3.20 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed? Given: Requested:
Ionization refers to the process ofa. changing from one period to another. c. turning lithium into fluorine. b. losing or gaining protons. d. losing or gaining electrons.
What role does warm air play in the formation of a thunderstorm
Which is true about models in science?A-Models are accurate enough for the phenomena they represent.B-Models only present macroscopic versions of the submicroscopic.C-Models help explain phenomena but are not good for predicting events.D-Models are used throughout science although they are not always accurate.
QUESTION 6 D Complete the photosynthesis equation below. CO2+ H2O -> C6H1206 02 ACTION

4.75 mL is the same as 0.00475 L.
True or False

Answers

True. 1mL equals 1x10⁻³L so to convert mL into L you have to move the decimal point over 3 places to the left.

I hope this helps. Let me know in the comments if anything is unclear.

What characteristic is important for plants found in saltwater wetlands?

Answers

Answer : Salinity tolerance

Explanation :

The important characteristics for the plants which are found in salt water wet lands is salinity tolerance.

Salinity tolerance is the salt tolerance of crops in the wet lands which gives maximum salt level that a crop can tolerate without losing its productivity.

Although it may get affected negatively at higher levels of exposure. The salt level is often measured as the soil salinity or else the salinity of the irrigated water.

How many significant figures does 546.000 have

Answers

This has only only three sig figs because it is 546.000 the zeros are just place holders so thus meaning they are not significant. It is just another way to write 546 because in that number there is also 3 sig figs. They are just trying to throw you off. Just watch out because if the example is 540 then it is just two significant digits, and it were to be 540. then it be three cause that "." makes the zero significant.

Answer:

Its 7

Explanation:

I took the test...

The pH scale for acids and bases ranges from

Answers

0-14
0-6 is an acid
8-14 is a base
7 is neutral

For gamma radiation, what stops its penetrating abilities?

Answers

lead, concrete or steel. Gamma rays have a very small wavelength and therefore can penetrate most objects including walls, windows and the like. To fully protect an object inside an enclosure, heavily reinforced feet of concrete, steel and/or lead should be sufficient.

Answer:

YES! The answer is LEAD (PLATO)

Explanation:

If 4.00 g of NaCl react with 10.00 g of AgNO3, what is the excess reactant?

Answers

Answer : The excess reagent is, $NaCl$

Explanation :

First we have to calculate the moles of $NaCl$ and $AgNO_3$ .

$\text{Moles of }NaCl=\frac{\text{Mass of }NaCl}{\text{Molar mass of }NaCl}=(4g)/(58.4g/mole)=0.068moles$

$\text{Moles of }AgNO_3=\frac{\text{Mass of }AgNO_3}{\text{Molar mass of }AgNO_3}=(10g)/(169.9g/mole)=0.058moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$NaCl+AgNO_3\rightarrow AgCl+NaNO_3$

From the balanced reaction we conclude that

As, 1 mole of $NaCl$ react with 1 mole of $AgNO_3$

So, 0.068 moles of $NaCl$ react with 0.068 moles of $AgNO_3$

From this we conclude that, the moles of $AgNO_3$ are less than the NaCl. So, $AgNO_3$ is a limiting reagent because it limits the formation of products and $NaCl$ is an excess reagent.

Hence, the excess reagent is, $NaCl$

The reaction formula of this is NaCl + AgNO3 = NaNO3 + AgCl. The mole number of NaCl is 4/58.5=0.068 mol. The mole number of AgNO3 is 10/170=0.059 mol. So the NaCl is excess.

Other Questions

Which of the following reactant pairs will not react together to produce a reaction? Rb + CaCl2 K + H2O Al + CoPO4 Ni + FeO

What is the evidence of a chemical reaction when the fireworks go off

Which of the following metal atoms would have the highest conductivity?

What is the chemical formula for tin (II) fluoride?