HELP 10pts!
4.06 TGA Household pH Lab
ALL WORK must be shown for credit. (25pts) If unable to print, please include work on notebook paper.
This assignment must be done by hand and turned in by submitting a photo or scan of the document.
The pH of a solution is a measurement of how acidic or basic a solution is. An easy way to
measure the pH of a solution is to use pH paper. This paper has been treated with chemical
indicators whose color varies according to pH.
Understanding the pH Scale Pre-Lab Questions
Answer the following questions before beginning the lab.
1. Which numbers on the pH scale indicate an acid?
2. Which numbers on the pH scale indicate a base?
3. Which number on the pH scale indicates a neutral solution?
4. Which number on the pH scale indicates the strongest acid?
5. Which number on the pH scale indicates the strongest base?
1
6. Which number on the pH scale indicates the weakest acid?
7. Which number on the pH scale indicates the weakest base?
8. What type of ions do acids release (write the name and its abbreviation)?
9. What type of ions do bases release (write the name and its abbreviation)?
10. What is a neutral solution?

Answer:

10.5grams

Explanation:

Molarity = number of moles (n)/ volume (V)

According to this question;

Volume = 750 mL = 750/1000 = 0.75L

Molarity = 0.35M

number of moles (n) = molarity × volume

n = 0.35 × 0.75

n = 0.2625mol

Using mole = mass/molar mass

Molar Mass of NaOH = 23 + 16 + 1

= 40g/mol

mole = mass/molar mass

0.2625 = mass/40

mass = 10.5grams

10.5 grams are needed to prepare 0.75L of a 0.35 M solution of NaOH.

Answer:

It will condense.

Hope it helps,

Please mark me as the brainliest

Thank you

Answer:

yes

Explanation:

Answer:

electrical field.

hope it helps.

Answer:

Answer:

different

Explanation:

A chemical reaction may be defined as the process or method by which a substance undergo a change in their structure chemically when reacting with some other substance and acquiring the property of both or sometimes forms a new substance. It leads to the chemical transformation of the chemical substance to some another substance.

The properties of the new substance formed is different form the parent substance before the reaction.

Thus, when chemical reaction occurs, the properties of the substances before the reaction and after the reaction takes place is different.

Answer:

In other words, the hot dog buns limit the number of complete hot dogs we can produce. ... The amount of a product that is formed when the limiting reactant is fully ... the limiting reactant and calculate the theoretical yield for an actual chemical reaction. ... Method 1: For the first method, we'll determine the limiting reactant by ...

Explanation:

Regarding the limiting reagent, it is true that:

Which of the following is true of a limiting reagent?

Regarding the limiting reagent, it is true that:

Learn more about the limiting reagent here: https://brainly.com/question/24945784

Answer:

omg

Explanation:

omg omg omg omg omg omg omg omg omg omg I can't either ehhhhhh

Answer:

LD50 is the amount of a material, given all at once, which causes the death of 50% ... LD100 Lethal dose for 100% of the animal test population ... Researchers can do the test with any animal species but they use rats or mice ... quoted as parts per million (ppm) or milligrams per cubic metre

Explanation: hope this helps :)

Answer:

They can check if one of the bullets is gone if the gun was fully loaded or they can see if there is any particles of gun powder on the gun. I may be wrong.

Answer:

Synthesis :)

Explanation:

Answer:

When a solid turns directly to a gas this is called sublimation. From the graph it can be seen if the pressure is raised to ~5 atm as the CO2 warms up, it will pass through its triple point.

Explanation:

Answer:If the pressure is raised to ~5 atm as the CO2 warms up, it will pass through its triple point.

Explanation:

Answer: The mitochondria, as bacteria, only wanted to rob the host cells of their energy and then leave them to die. But the bacteria soon realized the benefit of working together with simple cells. The simple cells provide them with antioxidants to protect them from free radicals and toxic reactive oxygen species that the mitochondria generate as a byproduct of energy production.

Hope dis helps!

:)

Explanation:

yes, chlorine and hydrogen form a polar covalent bond. Chlorine has a quantity of 7 electrons and hydrogen has only 1 electron, for this reason an unequal bond will form, that is, it will be uneven in distribution.

✧◝(⁰▿⁰)◜✧

Answer:

oil

Explanation:

Water: 1.00

Light Corn Syrup: 1.33

Vegetable Oil: 0.92

The molarity of a substance is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is expressed as:

[tex]Molarity = \frac{mole}{volume }[/tex]

From the question given above, the following data were obtained:

Molarity of KCl = 2.45 M

Mole of KCl = 0.5 mole

The volume of KCl needed can be obtained as follow:

[tex]Molarity = \frac{mole}{volume }\\\\2.45 = \frac{0.5}{Volume }[/tex]

Cross multiply

2.45 × Volume = 0.5

Divide both side by 2.45

[tex]Volume = \frac{0.5}{2.45}\\[/tex]

Therefore, 0.20 L is needed to make the solution.

Learn more: https://brainly.com/question/23816507

Answer:

The grey squirrel.

Explanation:

This is your answer because the white one would have a harder time to blend in with the tree's and the environment, whilst the grey one is better suited for its environment better due to the fact that it can blend in with the trees, and hide better.

Answer:

D

Explanation:

can i get brainliest??

Answer:

6.93 J/g C

Explanation:

5200=50 g (15 C)x

5200=750x

Also I just took the test

Answer:

spring summer fall(autumn) winter

Explanation

spring runs from March 1 to May 31; summer runs from June 1 to August 31; fall (autumn) runs from September 1 to November 30; and. winter runs from December 1 to February 28 (February 29 in a leap year).

Hope I be brian list and hope it helps

Answer:

primary

Explanation:

Answer:

10 watts

Explanation:

Power = Work / time

Power = 50 J / 5 s

Power = 10 watts

The power that is necessary to do 50 joules of work in 5 seconds is 10 watts

Power is the amount of transfer of energy or converted per unit of time. Power is equal to energy divided by time. The SI unit of power is the watt. The three equations of power are:

P = Et.

P = Wt.

P = V2R.

Work is the transfer of energy from one body by the application of force. Work can be calculated by dividing force into displacement. Joule is the quantity by which work is calculated. The third equation will be used to calculate power.

There are different types of power that are used in doing work. They are legitimate, expert, reward, etc.

Given, 50 joules of work

Time is 5 seconds

Power = Work / time

Power = 50 J / 5 s

Power = 10 watts

Thus, the power is 10 watts.

To learn more about power, refer to the link:

https://brainly.com/question/3286992

#SPJ6

Explanation:

What would be the new volume if the pressure on 600 mL is increased from 90 kPa to 150 kPa? V = Pu V₂ = 360 mL ~ 400 mL 6.

Answer:

Yes

Explanation:

"a foreigner, especially one who is not a naturalized citizen of the country where they are living" is what we define as an alien

So we can say to ants we are aliens because we aren't a naturalized citizen in their country.

Answer:Yes aliens are real because the reason why i think this is because In the good old days, the arrival of UFOs on the front page of America’s paper of record might have seemed like a loose-thread tear right through the fabric of reality — the closest that secular, space-race America could have gotten to a Second Coming. Two decades ago, or three, or six, we would’ve also felt we knew the script in advance, thanks to the endless variations pop culture had played for us already: civilizational conflicts to mirror the real-world ones Americans had been imagining in terror since the beginning of the Cold War. And this is why i think aliens are real.

Explanation:Hope this helped also may i plz have brainlist?

Answer:

A, Venus.

Explanation:

Temperatures reach up to 460° C on a regular basis.

Answer:

How can we decide which geologic process formed the channel on Mars? Students figure out: The channel on Mars was probably formed by water. The rover Curiosity found rocks near the channel that were made up of many smaller rocks.

Explanation:

Hope it helps! Correct me if I am wrong :>

Can you please mark me as brainlest?

Answer:Water

Explanation:

Water could have formed the channel on Mars because some of the rocks that scientists studied from the earth looks similar to the rocks on Mars.

Answer:

1656.12grams

Explanation:

To calculate the mass of a substance in a particle, we need to calculate the number of moles (n).

n = nA × 6.02 × 10^23

nA = 8.98 x 10^24 particles

number of moles = 8.98 x 10^24 ÷ 6.02 × 10^23

n = 8.98/6.02 × 10^ (24 - 23)

n = 1.492 × 10^1

n = 14.92moles of CaCl2

Molar Mass of CaCl2 where Ca = 40g/mol, Cl = 35.5g/mol

CaCl2 = 40 + 35.5(2)

= 40 + 71

= 111g/mol

Using mole = mass/molar mass

mass = molar mass × mole

mass = 111 × 14.92

mass = 1656.12grams.

Answer:

Environment Secretary can refer to:

Cabinet Secretary for Rural Affairs and the Environment, Scotland

Secretary for the Environment, Transport and Works, Hong Kong

Secretary of State for Environment, Food and Rural Affairs, United Kingdom

Secretary of the Environment (Mexico)

Answer:

Explanation:

The coefficient is the number in front of a substance that indicates how many molecules or atoms are. For example, when we see 5He, it shows that there are 5 atoms of helium. When we see 5H₂O, it indicates that there are 5 molecules of water, each having 2 atoms of hydrogen and 1 atom of oxygen, so a total of 10 hydrogen atoms and 5 oxygen atoms.

Answer:

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeiiiiiieeeeeemmmmmmmmiemeeeeeiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiimiiiimmmmmmmmmmmmmmmmmmmiimmiimiiiiiiiimiiiiiimmii

Explanation: