PLEASE HELP ME!!!!!!
1.) List the actual volume of titrant needed to produce a color change for Sample A and Sample B. Answer:
Volume of titrant needed to produce a color change for Sample A: ___ ml Volume of titrant needed to produce a color change for Sample B: ___ ml

2.) There are many aspects to the technique known as titration that are extremely important if results are to be accurate. In a traditional or authentic laboratory setting, these techniques are important and sometimes delicate. List two of the techniques used in this lab that provided you will the most accurate possible results. Describe why these techniques are important and how ignoring the techniques would affect the lab.
Answer:
Technique #1: …
Why technique is important: …
Technique #2: …
Why technique #2 is important: …

3.) The titration procedure you have just performed is similar to what is carried out by water-quality workers throughout the world. They use a kit to perform titration on location instead of in a laboratory. In real-life situations, workers collect water samples in a lake or stream. In lakes and streams calcium carbonate (CaCO3) causes alkalinity. Calcium carbonate acts as a buffer, a substance that serves to resist small changes in acidity or alkalinity in a solution. When acid rain enters lake water, it can be neutralized by the bases present and thus the lake does not become too acidic. Since the key ion is the hydroxide ion, the nature of the location doesn’t matter in this case. All over the world, right now, pollution workers are measuring calcium carbonate in lakes and streams.
If a worker studied two lakes and Lake X had a greater ppm (concentration in parts per million) of calcium carbonate than Lake Z, and both lakes are the exact same size, which of the two lakes would be able to withstand a greater amount of rain that is acidic? Explain your answer.
Answer:
Lake ___ would be able to withstand a greater amount of acid rain.
Explanation: …

Answer:

d

Explanation:

Answer:

20m/s

Explanation:

Given that :

Time, t = 2 seconds

Using the relation :

v = u + at

a = g is positive (downward)

V = final velocity

u = initial velocity = 0

v = u + gt

v = 0 + 10(2)

v = 20 m/s

Answer:

True

Explanation:

It means the reaction is occuring.

Answer:

c=-1+x=varible+a=(5)^3

Explanation:

facts

Answer:

A

Explanation:

It has the lowest ionisation energy

Answer:

Beryllium

Explanation:

Answer:

Gold is element 79 and its symbol is Au.

Explanation:

all are a good example of plant tissue but from my side I think it is B.

your well-wisher

Answer:

6.31x10¹¹s⁻¹ = Frequency

Explanation:

To convert frequency to energy or vice versa we must use the equation:

e = h*f

Where e is energy in joules (4.18x10⁻²²J)

h is Planck's constant (6.626x10⁻³⁴Js)

Replacing:

4.18x10⁻²²J = 6.626x10⁻³⁴Js*f

Answer: hydrogen and oxygen

Explanation:

Answer:

Organelles; role.

Explanation:

A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells. Generally, cells have the ability to independently replicate themselves. In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles with their respective functions in all living organisms such as trees, birds, and bacteria include;

1. Nucleus : it controls all the activities taking place in the cell and the synthesis of proteins.

2. Mitochondria : it provides all the energy required in the cell by transforming energy forms.

3. Lysosomes : they are responsible for absorbing materials and breaking the materials taken in by the cells.

4. Chromosomes : they give sets of instructions for the synthesis of products.

5. Ribosomes : they are involved in the build up of proteins.

6. Endoplasmic Reticulum : this is where the ribosomes perform their tasks.

7. Cytoskeleton : they help to maintain and support the shape of the cells.

8. Vesicles : they ensure proteins are properly transported to the right and exact location.

9. Golgi apparatus : it prepares the protein for export by chemically tagging them.

10. Cell membrane : is the wall of the cell and typically controls what leaves and enters the cell.

Hence, cells are made of many parts, or organelles, that help the cell do its job. Each cell organelle has a specific function, or role.

Answer:

98 moles of H₂O.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2HCl + CaCO₃ —> CaCl₂ + H₂O + CO₂

From the balanced equation above,

1 mole of CaCO₃ reacted to produce 1 mole of H₂O.

Finally, we shall determine the number of mole of H₂O produced by the reaction of 98 moles of CaCO₃. This can be obtained as follow:

From the balanced equation above,

1 mole of CaCO₃ reacted to produce 1 mole of H₂O.

Therefore, 98 moles of CaCO₃ will also react to produce 98 moles of H₂O.

Thus, 98 moles of H₂O were obtained from the reaction.

Answer:

A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Answer:

Nuclear decay is also called radioactive decay, and it occurs in a series of sequential reactions until a stable nucleus is reached. Nuclear reactions release much more energy—orders of magnitude more—than exothermic chemical reactions.

Explanation:

Answer:

ANY KENITIC PARTICLE

Particles in both liquids and gases collectively called fluids

Please mark as brainliest

Have a great day, be safe and healthy

Thank u  

XD

Answer:

latent heat, also called the heat of vaporization, is the amount of energy necessary to change a liquid to a vapour at constant temperature and pressure.

Explanation:

Answer:

D) The gravity on the moon is one sixth the gravity of Earth.  

Explanation:

Answer:

1 mol

Explanation:

Using the general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the provided information in the question;

V = 22.4L

T = 273K

P = 1 atm

R = 0.0821 Latm/molK

n = ?

Using PV = nRT

n = PV/RT

n = (1 × 22.4) ÷ (0.0821 × 273)

n = 22.4 ÷ 22.4

n = 1mol

Boiling water on a stove is an example of thermal energy. Thermal energy is produced when the atoms and molecules in a substance vibrate faster due to a rise in temperature.

Answer:

0.3991

Explanation:

so lets get the molar mass of MgCl2

(Mg=24.305 and Cl=35.453) so the molar mass of MgCl2= 24.305+(2*35.453)

molar mass of MgCl2= 95.211

no of moles=38g/95.211=0.3991

Answer:

reflection

Explanation:

wave reflection is when a sound bounces off something it cannot go through, like echoing

Answer:

two oxygen atoms

One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms.

Explanation:

the one main difference between a hurricane and a typhoon is the specific location where the storm takes place!!

typhoons and hurricanes can reach sustained winds of an averaging 74 mph.

Explanation:

magnetization

coz it will still have two pols that is north and south pole

Answer:

The answer is A- K2CO3(aq)+H2O(I)

Explanation:

The person who made this question gave the answer so...eh??

Answer:

A) K2CO3(aq) + H2O(l)

Explanation:

Answer:

Q) How many Carbon atoms are shown in the reactants

Ans) The reactants have one carbon atom

Q) How many C atoms are shown in the products?

Ans) there is one atom on the product side