help please asap. chem sucks

An element that is commonly found in household materials, malleable, and a good conductor of heat and electricity. They say it is not very reactive and is very similar to the other elements in its group as an alkali metal.

All the elements listed in column 1A of the periodic table—hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium—are classified as alkali metals. The fact that all of these metals contain one electron in their outermost layer of electrons binds them together.

The production of paper, detergents, and soap all need sodium hydroxide. In addition to being used as the electrolyte in alkaline, Ni-Cd, and Ni-MH batteries, potassium hydroxide is also used by farmers to make acidic soil more alkaline so that plants would grow better in it.

Vinegar, hydrochloric acid, and sulfuric acid are a few examples of the H = ion-containing compounds referred to as acids. Alkalis are a class of substances that feel soapy and contain the OH = ion.

Thus, option D is correct.

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Explanation:

I honestly believe the answer is greater

If the energy required to break the lattice is less than the energy released as the ions go into solution, then the dissolution of solute is endothermic.

An endothermic reaction is one in which energy is absorbed. This implies that the energy change of the reaction is positive.

Now, if the energy required to break the lattice is less than the energy released as the ions go into solution, then the process is endothermic and energy is absorbed.

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Answer:

J. All of these

Explanation:

I hope it helps.

I think it would be "all of the above" because all the things the wild hogs do are impacting all of the answers stated there.

hope that helped!!

Answer:

2 liters of HBr is needed to completely react with the 50 g of salt.

Explanation:

First of all, we determine the reaction:

2HBr + CaCO₃ →  CaBr₂  +  CO₂  + H₂O

We need to calculate, moles of carbonate in order to state the stoichiometry (1:2)

50 g . 1mol / 100.08g = 0.499 mol

1 mol of salt need 2 moles of acid to react, according to stoichiometry

Then, 0.499 moles of salt, will react with (0.499 . 2)/1 = 0.999 moles

As we have the [HBr], we can calculate the volume.

M = mol/L → we replace → 0.50 mol/L = 0.999 mol /L

L = 0.999 mol/0.50 mol → 1.99 L ≅ 2L

(D)- Sea breezes are local winds that blow from an ocean or a lake

Hope this helped <3

Answer:

Use molar mass:)

Explanation:

3.62 mol of Sn ([tex]\frac{118.7gramsSn}{mol}[/tex])=429.694

Since 3.62 has 3 sig figs, limit 429.694 to 3

= 430

Answer:

Its Polar bby

Explanation:

Answer:

polar

Explanation:

Answer:

C is the correct answer 35% and 9%

(C.NaCl

it is the correct answer because this compound likes colder weather.

Answer:

B - CALCIUM

Explanation:

Hopes it helps

Answer:

Mutualism

Explanation:

They both benefit from the relationship

Subscript and coefficient

Answer:

72g

Explanation:

Answer:

Lead (0.46j/g•C,

Explanation:

because it has the lowest specific heat)

Answer:

book on a table

Explanation:

a book on a table is an example of potential energy because when you slide the book off the table or just slide it in general it becomes  kinectic energy

Explanation:

A buffer is a solution that can resist pH change upon the addition of an acidic or basic components. It is able to neutralize small amounts of added acid or base,thus maintaining the pH of the solution relatively stable.This is important for processes and/or reactions which require specific and stable pH ranges.

I hope it's helpful!

Answer:

Which rock type changes more due to physical weathering?

Explanation:

A dependent variable is the effect obtained by manipulating a cause. Hence, when you are carrying out an experiment, the variable that you manipulate is the independent variable while the effect that it produces is the dependent variable.

Therefore, when the both rock samples are shaken, the mass after shaking shows the extent to which the rock samples break down after a physical weathering process. This is the dependent variable because the extent of physical breakdown depends on the type of rock.

Answer: protons

Explanation:

A. Protons I learned this in class

Answer:

wind..........................

Answer:

little l big l big l little l

Explanation:

can you help me Complete the following sentence: After we explained why we needed her in the play, she and joined our rehearsal A quaffed B. acquiesced C vengeance D. wreaked

Answer:

The key difference between empirical and molecular formulas is that an empirical formula only gives the simplest ratio of atom whereas a molecular formula gives the exact number of each atom in a molecule.