CHEMISTRY HIGH SCHOOL

Note from the formulas of the reactants that one is an acid and one is a base. The precipitate formed is therefore a salt. What is the balanced formula for this salt?1. OH
2. Ba2SO4
3. BaSO4
4. Ba(SO4)2

Answers

Answer 1
Answer: BaSO4 is the answer for this question i did the math
Answer 2
Answer:

Answer:

3. BaSO4

Explanation:

the math will show you, and to answer your commented question "How does this evidence indicate that the reaction has occurred between ions ?" :

The reaction of the ions can be checked by a number of methods. In a chemical reaction, the ions are in the aqueous solution. This means that they are in solution, dissolved with charge. During the reaction (ionic) there is an attraction between the positive and negative ions. This makes a change in the state of the reactants in the products. In addition, the reaction can result in an immediate observable change such as the formation of a solid or precipitation.  

Related Questions

How many moles of hydrogen are needed to produce 13.78 mol of ethane?
What are the differences between synthesis and decomposition reactions
The amount of heat transferred from an object depends on all of the following exceptA. the specific heat of the object. B. the change in temperature the object undergoes. C. the initial amount of Calories in the object. D. the mass of the object.
which sample, when dissolved in 1.0 liter of water, produces a solution with the highest boiling point?
Which element has both metallic and nonmetallic properties?(1) Rb (3) Si(2) Rn (4) Sr

what volume of a 0.716 m kbr solution is needed to provide 25.5 g of kbr? 35.7 ml 14.7 ml 299 ml 0.299 ml 153 ml

Answers

Answer:

\huge{ \boxed{299 \: ml}}

Explanation:

The volume of KBr required can be found by using the formula;

v = (m)/(M * c)

c is the concentration in M , mol/dm³ or mol/L

v is the volume in L or dm³

m is the mass in grams

M is the molar mass in g/mol

From the question;

m = 25.5 g

c = 0.716

Molar mass (M) of KBr = 39 + 79.9 = 118.9 g/mol

\therefore \: v = (25.5)/(118.9 * 0.716) \n = 0.299 \: l \n \n \text{but} \: 1 \: l \: = 1000 \: ml \n \therefore0.299l \: = (0.299)/(1) * 1000 \: ml \n = 299 \: ml \n \therefore \: v = 299 \: ml

Photosynthesis transfers carbonfrom the nonliving environment to the living environment.
from the cell to the air.
from the water to the cell.
from the nucleus to the mitochondria.

Answers

Photosynthesis is the process in plants to make their food. This involves the use carbon dioxide to react with water and make sugar or glucose as the main product and oxygen as a by-product. I think the best answer would be the first statement.

Answer: Option A

Explanation:

Photosynthesis is a process that helps the plants to make food by the help of carbon dioxide from the atmosphere and water, nutrients from soil and converts it into glucose in the presence of sunlight.

Atmosphere is a non living component of environment where carbon dioxide is present and it is transferred to plants which is a living component of ecosystem.

How do you number the groups of a periodic table?

Answers

find a periodic table and list the numbers or elements hope that helps

A common stain remover is sold in concentrated form as 3M sodium hypochlorite (NaOCl). You need to create 400 milliliters of a 0.5M solution of sodium hypochlorite to fill a spray bottle. What volume of 3M sodium hypochlorite is needed?15.0 mL

66.7 mL

133 mL

167 mL

Answers

To solve this we use the equation, 

M1V1 = M2V2

where M1 is the concentration of the stocksolution, V1 is the volume of the stock solution, M2 is the concentration ofthe new solution and V2 is its volume.

3 M x V1 = 0.50 M x .400 L

V1 = 0.07 L or 66.67 mL of the 3M sodium hypochlorite solution


The correct answer is the second option given.

Answer:

V2 = 66.67mL

Explanation:

Hello! To calculate this we have to take into account the equation that relates two substances:

M1 * V1 = M2 * V2

We have the concentration and volume of a substance and the concentration of the second. We have to find out the volume.

M1 = 0.5M  

V1 = 400mL

M2 = 3M  

V2 = (M1 * V1) / M2

V2 = (0.5M * 400mL) / 3M

V2 = 66.67mL

Gases and liquids will both expand to fill their container true or faulse

Answers

gasses do not liquid can because it is not a gas
Gasses do expand because they have no absolute volume
Liquids do not expand but will fill a container because they have no set shape just a set volume

What is the work done when a volume increases from 3 litersto 5 liters at 6 atm of pressure? (Conversion factor: 1 L atm = 100))

Answers

Answer:

-1215.9J is the work done

Explanation:

It is possible to find work done in the change of volume of a gas at constant pressure using:

W = -P×ΔV

Where W is work, P is pressure and V is change in volume}

Replacing:

W = -6atm×(5L-3L)

W = -12atmL

As 1atmL = 101,325J, work done in joules is:

-12atmL ×(101.325J / atmL) = -1215.9J is the work done

The value of work done when a volume increases from 3 liters to 5 liters at 6 atm of pressure is -1215.9 Joules.

How do we calculate workdone?

Workdone on any boby or by the body will be calculated as:

W = -P×ΔV, where

W = workdone

P = applied or exerted pressure = 6 atm

ΔV = change in volume due to workdone = (5-3) L

Negative sign in the formula shows that work is done on the opposite side of the pressure or volume.

On putting all these values on the above equation, we get

W = -6atm × (5L-3L)

W = -12 atmL

We know that, 1 atmL = 101,325 J,

So, workdone in joules will be written as:

-12 atmL × (101.325J / atmL) = -1215.9 J

Hence, -1215.9 J is the workdone.

To know more about workdone, visit the below link:
brainly.com/question/18363506
Other Questions
Jello has a density of 1.14 g/mL. A box of Jello makes 475 mL of Jello and has 13 g of sugar. Determine the % m/m of sugar in the Jello. (Hint: d=m/v) ​
What causes the volume to change in gases? (choose all that apply) a) temperature b) density c) shape of container d) pressure
What is the molar mass of CaSO4 ?
What is the carbon cycle