In this lab you measured the pH of the NH₄CI salt. If phenolphthalein is added to NHsC what would be the color of the solution? Give an explanation based on the value from the data sheet.
Answers
If phenolphthalein is added to NH₄CI, the solution would remain colorless.
In the lab, the pH of the NH₄Cl salt is measured. When phenolphthalein is added to NH₄Cl, the color of the solution will depend on the pH value obtained from the datasheet.
Phenolphthalein is a pH (acid-base) indicator that is colorless in acidic solutions (pH less than 8.2) and turns pink in basic solutions (pH greater than 10).
Since NH₄Cl is a salt formed from a weak base (NH₃) and a strong acid (HCl), it will produce an acidic solution.
Based on this information, the color of the solution after adding phenolphthalein to NH₄Cl would be colorless due to the acidic pH.
To know something about acid and base, click below.
https://brainly.com/question/23687757
#SPJ11
Related Questions
what is bitumen? a. it is a type of coal, with dark shiny bits of organic matter. b. it is a deep shale-oil deposit mixed with natural gas. c. it is the solid organic matter found in petroleum. d. it is an octane-raising gasoline additive that causes pollution. e. it a thick, sticky, tar-like heavy oil with a high sulfur content.
Answers
The correct option is (e) i.e. It is a thick, sticky , tar- like heavy oil with a high sulfur content.
Bitumen is a thick, sticky, tar-like heavy oil with a high sulfur content. It is a byproduct of petroleum refining and is commonly used in road construction and roofing materials. Sulfur is often present in bitumen and needs to be removed during the refining process.
The term bitumen refers to a substance produced through the distillation of crude oil. Bitumen is known for its waterproofing and adhesive properties and is commonly used in the construction industry, notably for roads and highways. Production occurs through distillation, which removes lighter crude oil components like gasoline and diesel, leaving the heavier bitumen behind. Deposits can also occur naturally at the bottom of ancient lakes, where prehistoric organisms have decayed and been subjected to heat and pressure.
Learn more about Bitumen : https://brainly.com/question/30583640
#SPJ11
Can someone help me?
Answers
Answer: 0.160 M
Explanation:
Why ions move and in which direction they move in the presence of an electric field created between two electrodes having opposite charges
Answers
Answer and Explanation:
In an electric field generated between two electrodes there is a separation of charges: a negatively charged electrode called cathode and a positively charged electrode called anode. Ions are charged particles, so they can be positive or negative charges. Opposite charges attract each other. So, the cathode - negatively charged - attracts positively charged particles. On the other hand, the anode - positively charged - attracts negatively charged particles.
Therefore, positive ions move towards the cathode and negative ions move towards the anode.
A science class was conducting an investigation about the transformation between potential energy and kinetic energy. The students dropped a
basketball from different heights above the floor. They videotaped the ball while it was falling and then calculated the ball's kinetic energy just before it
hit the floor.
When will the basketball have the highest kinetic energy and why?
Answers
When basket ball is dropped from a height, its potential energy decreases and its kinetic energy increases till it reaches the ground. The highest kinetic energy is at ground level.
What is kinetic energy ?The energy that an object has as a result of motion is known as kinetic energy. It is described as the effort required to move a mass-determined body from rest to the indicated velocity. The body holds onto the kinetic energy it acquired during its acceleration until its speed changes.
A ball drops from the top of a building and picks up speed as it descends. Its speed is increasing by 10 m/s every second. What we refer to as motion with constant acceleration is, for example, a ball falling due to gravity.
Thus, The highest kinetic energy is at ground level.
To learn more about kinetic energy, follow the link;
https://brainly.com/question/15764612
#SPJ1
The diagrams below represent the four states of matter. A number of blue balls are loosely packed in a container. A number of yellow balls are randomly distributed in a container. Diagram 1 Diagram 2 A number of red balls are tightly and neatly packed in a container. A number of balls are positioned randomly in a container. Some are pink and labeled with a plus sign and some are blue and labeled with a minus sign. Diagram 3 Diagram 4 Which diagram represents a gas that has been ionized? diagram 1 diagram 2 diagram 3 diagram 4
Answers
Answer:
diagram 1 blue balls
Explanation:
EDGE 2020
Answer: The answer is a
Explanation:
Which one of the following is an alkane?
A. C2H4
B. C5H10
C. C3H8
D. C4H6
Answers
Answer :
C. C3H8
The main reason for the extremely low solubility of carbon dioxide in benzene (C6H6) at room temperature is due to which of the following?
a. the increased disorder due to mixing of the solute and solvent
b. the relatively low strength of the intermolecular forces between carbon dioxide and benzene
c. the strong hydrogen bonding in benzene
d. the weak solvation of carbon and oxygen ions by benzene
Answers
This same intermolecular forces between carbonic acid and benzene (C6H6) are quite weak, primary cause of the incredibly low soluble of atmospheric co2 throughout benzene (C6H6) at ambient temperature.
What does the word "intermolecular forces" mean?A force of attraction or repellent between two nearby atoms, compounds, or ions is known as an intermolecular force. Dispersion, Dipole-Dipole, Hydrophobic Interactions, and Ion-Dipole are a few examples of intermolecular forces.
Intermolecular forces are what bonds?Van der Waals interactions including hydrogen bonds are examples of electromagnetic molecular structure. Intermolecular contacts, which hold molecules to one another in liquids and lock polyatomic ions apart, are weaker from nucleophilic attractions, what hold the atoms within molecules together.
To know more about intermolecular force visit:
https://brainly.com/question/10626096
#SPJ4
A test tube has a stopper on top. Is the system still be able to transmit heat? Why or why not?(1 point)
Yes, it can transmit heat because the heat will escape through the glass and stopper.
No, it cannot transmit heat because the moving molecules are completely contained inside the test tube.
No, it cannot transmit heat because the heat cannot escape out of the opening.
Yes, it can transmit heat because the heat will escape when the stopper is eventually opened.
energy in chemical reaction ii apply connexus
Answers
Answer:
Yes, it can transmit heat because the heat will escape through the glass and stopper.
Explanation:
I took the test, and also i think logically we know that heat could still transfer and get out through the glass
What causes the substances in dough to become bread?
A. Freezing
B. Stirring
C. Dissolving
D. Heating
Answers
Answer:
its answer d Im pretty sire
Answer:
Heating
Explanation:
what is the molarity of a solution that contains 0.350 mol of Na2S in 1.30 L of solution
Answers
Answer: 0.27 M
Explanation:
molarity = (0.350)/(1.30) = 0.27 M
How many total valence electrons are in P2O?
Answers
Answer:
In thes structure of PO43- there are a total of 32 valence electrons. For the structure for PO4 3- you should take formal charges into account to find the best structure for the molecule. Remember, PO4 3- has a negative three charge on the molecule.
Explanation:
During the SI Scavenger Hunt Lab, a student measured her foot length using a meter stick and recorded it as 25 cm. However, at the shoe store, the sales staff measured the length of her foot to be 23.7 cm. If the shoe store’s measurement is accepted as correct, what is the percent error of her meter stick measurement?
Answers
Answer:
Percent error in meter stick measurement is 5.5%.
Explanation:
Given data:
Measured value = 25 cm
Accepted value = 23.7 cm
percent error = ?
Solution:
Subtract the accepted value from measured value divided by accepted value multiply by 100.
Formula:
(measured value - accepted value / accepted value ) × 100
Now we will put the values.
(25 cm - 23.7 cm/23.7 cm ) × 100
1.3 cm/23.7 cm ) × 100
0.055× 100
5.5%
Percent error in meter stick measurement is 5.5%.
How many joules are needed to change the temperature of 40 g of water from 33 0C to 23 0C?
Answers
A reaction between 7.88 grams of element X and 23.12 g of elementy produced a compound called XY.
How many grams of XY were produced?
Answers
Answer:
30 g
Explanation:
According to Mendeleev's theory, the total mass of the reactants and products are the same.
If 15 grams of solid aluminum reacts with excess hydrochloric acid, how much of each product will be produced? The reaction is a single displacement reaction which produces aluminum chloride and hydrogen gas.
Answers
According to the stoichiometry of the given chemical equation, 74.13 g of aluminium chloride and 1.66 g of hydrogen gas are formed.
What is stoichiometry?It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
53.96 g aluminium gives 266.68 g aluminium chloride, thus 15 g aluminium will give 15×266.68/53.96=74.13 g and 53.96 g aluminium gives 6 g hydrogen , thus 15 g will give 15×6/53.96=1.66 g of hydrogen.
Learn more about stoichiometry,here:
https://brainly.com/question/9743981
#SPJ1
Select all types of muscles.
Skeletal
ℍ
Cardiac
Stretch
Smooth
Answers
Answer:
Skeletal
Cardiac
Smooth
Explanation:
The body contains three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscl
Please, I need this now.
Drag each label to the correct location on the image.
Match each situation to the circuit diagram that represents it.
Answers
Answer: if anyone needs it <3
Explanation:
the process if photosynthesis demonstrates that plants 1:only require sunlight and soli to grow 2:require water and air in addition to grow 3:obtain their energy from the sun 4:supply oxygen to the environment 5:provide carbon dioxide to the environment.check all that are true.
Answers
The process of photosynthesis requires water and air in addition to grow ,obtain their energy from the sun and supply oxygen to the environment .
It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy through the process of cellular respiration.
Some of the energy which is converted is stored in molecules of carbohydrates like sugar and starches which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.
Learn more about photosynthesis,here:
https://brainly.com/question/29764662
#SPJ1
What does dalton mean
Answers
Answer:
Meaning:from the valley town; the settlement in the valley. Sounding like the proper English surname it was derived from, Dalton is all about being smart and trendy with equal parts cool and nerdy. Dalton, which comes from “dael” or “valley,” and “tun,” or “settlement,” may have peaked in the 1990s, but that's okay.
Explanation:
a unit used in expressing the molecular weight of proteins, equivalent to atomic mass unit.
Answer:
A unit used in expressing the molecular weight of proteins, equivalent to atomic mass unit.
Or in simpler terms a unit of measure.
Explanation:
Hope this helps and have a great say!!!!
if an atom of c14 undergoes radioactive decay during which a neutron is converted into a proton, (which stays in the atomic nucleus) what atom is produced?
Answers
When an atom of carbon-14 (C-14) undergoes radioactive decay in which a neutron is converted into a proton, the resulting atom produced is nitrogen-14 (N-14).
Carbon-14 is an isotope of carbon that contains 6 protons and 8 neutrons in its nucleus. During radioactive decay, one of the neutrons in the C-14 nucleus is converted into a proton. Since the number of protons determines the identity of the element, the resulting atom will have 7 protons. Therefore, it becomes nitrogen-14, which has an atomic number of 7 and 7 neutrons in its nucleus.
The process of converting a neutron into a proton is known as beta decay, which is a common type of radioactive decay observed in isotopes. This conversion leads to a change in the atomic number of the nucleus, resulting in the formation of a different element.
To know more about Radioactive decay :
brainly.com/question/1770619
#SPJ11
please help me quickly
Answers
Answer:
tell me the question i cant see the picture
Explanation:
Which element has a greater electronegativity: Cr, P, or Ba
Answers
Answer:
P
Explanation:
Information about various chemical compounds and elements. ... P. 2.19. S. 2.58. Cl. 3.16. Ar. n.a.. 4. K. 0.82. Ca. 1.00. Sc. 1.36. Ti. 1.54. V. 1.63. Cr. 1.66. Mn. 1.55. Fe. 1.83. Co. 1.88. Ni. 1.91. Cu. 1.90. Zn. 1.65. Ga. 1.81 ... electronegativity scale, although in the Allred-Rochow scale, helium has the highest electronegativity.
A sample of an unknown compound has a percent composition of 52. 14% carbon, 13. 13% hydrogen, and 34. 73% oxygen. Which compounds could the sample be? CH3CH3CH2O2 C2H5OH C4H10O2 C4H12O2 CH3CH3CH2OOH.
Answers
The percent composition of elements in the compound results in the molecular formula. The formula for given compound is \(\rm C_2H_5OH\).
What is a molecular formula?A chemical formula is the representation of the ratio of the elements in a mole of sample or compound.
The given compound has 52.14% carbon, 13.13 % hydrogen, and 34. 73% oxygen.
The stoichiometric ratio of the following compounds can be given for moles as:
\(\rm C:H:O=\dfrac{=52.14}{12.0107} :\dfrac{13.13}{1.00784} :\dfrac{34. 73}{15.999 }\\\\ C:H:O=4.34:13.02:2.17\\\\C:H:O=2:6:1\)
The compound has the molecular formula of \(\rm C_2H_6O\). The compound can be written in simplified form as, \(\rm C_2H_5OH\). Therefore, the correct option is B.
Learn more about molecular formula, here:
https://brainly.com/question/1247523
Complete and balance the molecular equation, including the phases, for the reaction of aqueous potassium sulfate, K2SO4, and aqueous strontium iodide, SrI2. Molecular equation: K2SO4(aq) + SrI2(aq) → 2KI(aq) + SrSO4(s) Write the balanced net ionic equation, including the phases, for this reaction. Net ionic equation:
Answers
An ionic equation is a chemical equation in which the electrolytes in aqueous solution are expressed as dissociated ions.
Given the molecular equation of the reaction of aqueous potassium sulfate, K2SO4, and aqueous strontium iodide, SrI2 as shown:
\(K_2SO_4\mleft(aq\mright)+SrI_2\mleft(aq\mright)\to2KI\mleft(aq\mright)+SrSO_4\mleft(s\mright)\)The total ionic equation is as shown below;
\(2K^++SO^{2-}_4+Sr^{2+}+2I^-\rightarrow2K^++2I^-_{^{^{}}}+SrSO_4\)Next is to get the net ionic equation from the total ionic equation. Canceling out the common ions on both sides of the equation will give:
\(\begin{gathered} \cancel{2K^{+_{}}}^{}+SO^{2-}_4+Sr^{2+}+\cancel{2I^-}\rightarrow\cancel{2K^+}+\cancel{2I^-}^{}_{^{^{}}}+SrSO_4 \\ SO^{2-}_4(aq)+Sr^{2+}(aq)\rightarrow SrSO_4(s) \end{gathered}\)This gives the net ionic equation of the given molecular equation
The chemical equation below shows the reaction between carbon dioxide (CO2) and lithium hydroxide (LiOH).
CO2 + 2LiOH -> Li2CO3 + H2OT
he molar mass CO2 is 44.01 g/mol. How many moles of LiOH are needed to react completely with 25.5 g of CO2?
a. 0.290
b. 0.579
c. 1.16
d. 1.73
Answers
1.16 moles of \(LiOH\) is required to react completely with 25.5 g of \(CO2\) where the molar mass \(CO2\) is 44.01 g/mol.
Given the reaction between carbon dioxide (\(CO2\)) and lithium hydroxide (\(LiOH\)) is as follows:
\(CO2 + 2LiOH - > Li2CO3 + H2O\)
The molar mass of \(CO2\) is given as: = 44g/mol
The mass of \(CO2\) is = 25.5g
Then the number of moles of \(CO2\) used is : = 25.5/44 = 0.579mol
The molar mass of \(LiOH\) is = 23.95 g/mol.
Since the equation states that 2 moles of \(LiOH\) are required to react with 1 mole of \(CO2\), then 2 x 0.579 mol = 1.16 mol of LiOH is required.
Hence 1.16 moles of \(LiOH\) is required to react completely with 25.5 g of \(CO2\).
To learn more about molar mass click here https://brainly.com/question/22997914
#SPJ4
Which classification of alcohols can undergo oxidation to yield a ketone? a) Both primary and secondary alcohols yield ketones when oxidized: b) Both secondary and tertiary alcohols yield ketones when oxidized. Only primary alcohols yield ketones when oxidized. Only secondary alcohols yield ketones when oxidized. Only tertiary alcohols yield ketones when oxidized_
Answers
The classification of alcohols that can undergo oxidation to yield a ketone is only primary alcohols.
Primary alcohols undergo oxidation to yield aldehydes, which further oxidize to ketones. The oxidation process involves the removal of two hydrogen atoms and the addition of an oxygen atom.
In contrast, secondary and tertiary alcohols do not undergo oxidation to form ketones because they lack the hydrogen atom on the carbon atom directly attached to the hydroxyl group (-OH).
The hydrogen atom on primary alcohols makes them more susceptible to oxidation, allowing them to undergo the oxidation process to form ketones. This reaction is commonly used in organic chemistry to synthesize ketones.
Visit here to learn more about ketones:
brainly.com/question/23849260
#SPJ11
Which causes genetic variations and can result in different alleles? O predation rate O random mutations O competition o environmental changes
Answers
Answer:
B
Explanation:
Answer:
BBBBBBBBB
Explanation:
what is a mixture of elements and compounds
Answers
The substance in the image above would be classified as a mixture of elements (option E).
What is a compound and mixture?A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.
On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.
According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.
Learn more about mixture at: https://brainly.com/question/12160179
#SPJ1
If 3 moles of Mg were reacted, how many moles of
0, were also reacted?
2 Mg + O2 → 2 Mgo
Answers
What is the electron configuration of Iron
Answers
The electron configuration of Iron is:
[Ar] 3d⁶4s²