Answer:C.He should locate the chloroform stored in a dark container in chemical storage and should take it to the fume hood to pour.
Explanation:
The statement of the question clearly states that chloroform is sensitive to light and it's vapour is toxic.
If a substance is sensitive to light, then it must be stored in a dark bottle. This is because. If a substance that is sensitive to light is stored in a transparent container, it may be decomposed by light.
Being a substance whose fumes are toxic, Malik should pour the liquid in a fumes hood so that he does not inhale the fumes.
Pls help solving question (d)!!
Answer: 1 C4H6O3 + 1 H2O -> 2 C2H4O2
Explanation:
LEFT HAND SIDE:
C= 4
H=8
O= 4
RIGHT HAND SIDE:
C= 2
H= 4
O= 2
You want the left side to be equal to the right side.
We can multiply each atomic element by 2, to get C4H8O4.
7. Which liquid caused the egg to shrink? *
(1 Point)
a. Vinegar
b.Water
c.Corn Syrup
Answer:
c.corn syrup
the egg shrinks due to osmosi.
What is the specific location water is in during each state of matter
HELP ASAPP JUST TELL ME WHAT TO PUT IN THE MISSING SPACES words(cell,microorganisms,micrometer,microscopic,molecule)
Answer:
microorganisms, molecule, microscopic, cell, micrometer
Explanation:
If you find my answer helpful
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Which of these elements is most likely to be a colorless gas based on the type of element? Al, Pd, Ar, Cs
List the steps of how a virus is able to infect your cells
Answer:
Key Points
Viral replication involves six steps: attachment, penetration, uncoating, replication, assembly, and release.
During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it.
Please help me immediately I will mark you as brainiest.
Which of these statements about density is NOT true? a The density of a block of substance A equals 10.0 g/cm3. If I cut the block in half, its density will equal 10.0 g/cm3. b A cubic meter of bricks is more dense than a cubic meter of feathers. c It is possible to identify a substance by its density. d The density of a substance is always the same, regardless of temperature.
Answer:
d. The density of a substance is always the same, regardless of temperature.
Explanation:
Density is a characteristic property of water and defined as the mass per unit volume.
The density of a substance always remains the same at the same temperature regardless of the size of the sample. The density of the sample changes with temperature and pressure. for example : The density of a substance increases with a decrease in temperature as the volume increases.
Hence, the statement about density is not true is " d. The density of a substance is always the same, regardless of temperature."
Calculate the number of molecules of sulphur S8 in 8 gram of solid Sulphur
Answer:
12gram
Explanation:
test told me
How do you think changes in temperature can cause movement of air and other fluids on Earth?
Where on Earth's surface might you be if you are experiencing the trade winds? Explain how air pressure, temperature, and the Coriolis effect in movement and direction of thesewinds.
""The polar easterlies"-is dry and cold prevailing winds that blow from the high pressure areas of the polar highs at the north and south poles towards low pressure areas within the Westerlies at high latitudes.
Cold air diminish at the pole making the high force, Pushing an equator-ward discharge, of air; that outflow is then Sidetrack westward by the Coriolis effect."
Hoped This Helped,
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[04.01] Which best describes the transition from gas to liquid?
Answer:
When gaseous state changes into liquid state the molecules slow down in speed because of decrease in energy molecules come slightly closer to each other.
Name the gas evolved when Zn reacts with dil.HCI (choose the answer from the following)
1. O2 2. H2 3. CO2 4. Cl2
Answer:
H₂
Explanation:
Which ice cream rather have Chocolate- Mint or Cookie IN' Cream?
Answer:
Cookies N Cream
Explanation:
Its The
Distinguish between organic acid and mineral acid
Answer:
Mineral acids are very important to chemical procedures. An organic acid is an organic compound with acidic properties. ... Generally, organic acids are weak acids and do not dissociate completely in water, whereas the strong mineral acids do.
Answer:
Organic Acids:
organic acids are weaker.organic acids always contain carbon, hydrogen and oxygen. organic acids are naturally occurring. organic acids are found in plants and animals.Examples: Methanoic acid, ethanoic acid, lactic acid etc.Mineral Acids:
Mineral acids are strong. Mineral acids are derived from one or more minerals found on Earth.Other than hydrogen, no other element is fixed in mineral acids.Example: Hydrochloric acid, sulphuric acidA piece of metal is composed of atoms Each atom in the metal contains 29 protons how is the metal classified
Answer:
you an see the answer at the pic
What do Lucille's cells need in order for her body to function properly? How might a problem with Lucille's respiratory system lead to low levels of oxygen in her cells? Why does having low levels of oxygen in her cells make it difficult for Lucille to play soccer?
Answer:
In order for her body to act correctly, Lucille's cells require glucose and oxygen. A problem with Lucille's respiratory system leading to low levels of oxygen in her cells is known as Hypoxemia. Having low levels of oxygen in her cells will make it difficult for Lucille to play soccer because she would not be able to breathe .If her respiratory system doesn't function properly, so enough oxygen molecules will not move into her respiratory system , ensuring that her cells won't have enough oxygen molecules. Playing soccer is difficult if you don't have enough air.Explanation:
ABOUT HYPOXEMIA -: It is called hypoxemia to have low oxygen levels in your blood. It is called hypoxia to have insufficient oxygen levels in the tissues. Hypoxemia at high altitudes can occur. Hypoxemia that induces low levels of oxygen in the tissues of the body is called hypoxia. The two words are often used by people interchangeably, but they are not the same thing.
The capacity of the body to supply normal amounts of oxygen to the blood can interfere with a number of conditions and circumstances. Some of hypoxemia's most prevalent causes include:
Heart problems, heart defects included .Lung disorders such as asthma , bronchitis, emphysema. High-altitude areas where oxygen is lower in the air. Powerful drugs for pain or other conditions that delay respiration . Sleep apnea (breathing impairment during sleep) .Lung tissue inflammation or scarring (as in pulmonary fibrosis).Answer:
In order for her body to act correctly, Lucille's cells require glucose and oxygen.
A problem with Lucille's respiratory system leading to low levels of oxygen in her cells is known as Hypoxemia.
Having low levels of oxygen in her cells will make it difficult for Lucille to play soccer because she would not be able to breathe .If her respiratory system doesn't function properly, so enough oxygen molecules will not move into her respiratory system , ensuring that her cells won't have enough oxygen molecules. Playing soccer is difficult if you don't have enough air.
Explanation:
ABOUT HYPOXEMIA -: It is called hypoxemia to have low oxygen levels in your blood. It is called hypoxemia to have insufficient oxygen levels in the tissues. Hypoxemia at high altitudes can occur. Hypoxemia that induces low levels of oxygen in the tissues of the body is called hypoxia. The two words are often used by people interchangeably, but they are not the same thing.
The capacity of the body to supply normal amounts of oxygen to the blood can interfere with a number of conditions and circumstances. Some of hypoxemia's most prevalent causes include:
Heart problems, heart defects included .
Lung disorders such as asthma , bronchitis, emphysema.
High-altitude areas where oxygen is lower in the air.
Powerful drugs for pain or other conditions that delay respiration .
Sleep apnea (breathing impairment during sleep) .
Lung tissue inflammation or scarring (as in pulmonary fibrosis).
Whas the the ionic radius of strontium
Answer: 255 pm
Explanation: Hope this helps!
Question 3 (1 point)
Which of the following elements is the most electronegative: arsenic, phosphorus,
sulfur, or selenium?
selenium
arsenic
phosphorus
sulfur
Answer:
sulfur
Explanation:
From the given lists of elements, the one with the most electronegativity is Sulfur.
Electronegativity is of an element is a property that combines the ability of its atom to lose and gain electrons.
It is a measure of the relative tendency with which the atoms of the element attract valence electrons in a chemical bond.
Using the Pauling's electronegative table of elements;
Here are electronegativity values of the given elements;
selenium 2.4
arsenic 2.0
phosphorus 2.1
sulfur 2.5
We see that the value of sulfur is the highest.
What is the one way that the thermal energy of a system can be explained?
Answer: here is 1 way:
Explanation:
Meh explaination :1. Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy. A whole branch of physics, thermodynamics, deals with how heat is transferred between different systems and how work is done in the process (see the 1ˢᵗ law of thermodynamics).
Easy explaination:2. The energy of motion in the molecules of a substance.
Hard explanation: 3. Thermal energy is defined as the total of all kinetic energies within a given system.
Hope this helps!;)
What is the Independent and Dependent Variables for this experiment?
"How does the amount of salt in water affect how an egg floats?"
please help!!
Answer:
The egg is the dependent variable and the salt is the independent variable.
Explanation:
The dependent variable is something that stays the same throughout the experiment. The independent variable is something that might not stay the same throughout the experiment. The egg does not change because we're using an egg and not an egg and then a tomato or a potato, but the salt does change because we're changing the amount of salt in the bowl/plate or anything else that we are using to perform this.
This is kinda long but it explains mostly everything. DM me for more dependent and independent variable help.
GIVING 5 STARS AND BRAINLIEST IF YOU ANSWER FIRST AND CORRECTLY!! This is due today... so please help. Thank you.
QUESTION:
How many atoms does H2SO4 have?
Answer:
2 Hydrogen atoms, 1 Sulfur atom and 4 oxygen atoms.
Explanation:
H has a 2 next to it. S has no number assigned to it meaning it represents 1 atom. Lastly, O has a 4 next to it.
Hope this helps!!
Answer:
7
Explanation:
2 hydrogen atoms. 1 Sulphur atom. And 4 Oxygen atoms.
The superscript 2 and 4 show how many of the element are there.
Which elements are likely to close electrons?
Answer:
Explanation:
In general, metals will lose electrons to become a positive cation and nonmetals will gain electrons to become a negative anion. Hydrogen is an exception, as it will usually lose its electron. Metalloids and some metals can be can lose or gain electrons.
What is Mercury's proximity to the sun
PLEASE HELPP
Answer:
46.943 million km
Explanation:
From an average distance of 36 million miles (58 million kilometers), Mercury is 0.4 astronomical units away from the Sun.
From an average distance of 36 million miles (58 million kilometres), Mercury is 0.4 astronomical units away from the Sun.
(I hope this helped ^^)
To compare how different types of soil absorbed water, Christian set up an experiment. He poked equal numbers and sizes of holes into the bottoms of three plastic cups. He filled one cup with sand, one with potting soil, and left one empty. He placed each cup in a stand over a beaker. Christian poured 400 mL (milliliters) of water into each of the cups. He then measured the amount of water collected in the beakers beneath each cup at 1 minute intervals for 3 minutes. What is the control in this experiment? Group of answer choices
Answer:
The empty cup
Explanation:
Got it right on the test
.Over a period of 1,000 years, a lake becomes a maple forest. Is this process primary or secondary succession? Explain your answer.
Answer:
It is secondary succession.
Explanation:
primary succession only occurs in areas where there was no previous ecosystem
In the production of maple forest over the 1,000 years period, there has been the presence of the lake. Thus the production in the lake has been the secondary succession.
The primary and secondary succession has been the development process in the ecosystem. The ecosystem development can be taken place when there has been no previous vegetation, or when there has been the available ecosystem.
The primary succession can result when there has been no available previous ecosystem. The secondary succession can take place when there has been a previously existing ecosystem.
In the production of maple forest over the 1,000 years period, there has been the presence of the lake. Thus the production in the lake has been the secondary succession.
For more information about succession, refer to the link:
https://brainly.com/question/1151386
Determine the number of moles of 725.0 g of BaSO4
Answer:
It would be 3.1063937724731447 moles.
Hope this helps :)
The most common physical state of the elements is
Answer: Solids, gases, or liquids
Explanation:
Matter can undergo physical and chemical changes called Phase Changes. Substances are classified based on physical states, often referred to as the States of Matter. At room temperature and pressure the common Physical States of elements are solids, gases or liquids.
Most are solids only 11 are gases and 2 are liquids
The most common physical state of elements in the periodic table is Solids as there are about 84 elements which exists as solids at room temperature and pressure in the periodic table
Elements in the periodic table can exist as one of the prominent physical states at room temperature and pressure.
These physical state may be;
SolidLiquidor GasElements which are solid at Room Temperature are about 84.At room temperature and pressure, only two elements are existent in liquid phase are: Bromine. Mercury.A look at the periodic table evidently tells that there are 11 elements in the table that exist in the gaseous state at room temperature and pressure.These elements are Hydrogen, Helium, Nitrogen, Oxygen, and the other Noble gases.
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https://brainly.com/question/21029213
HELP!!!
write the scientific names of these ionic compounds
Answer:
• Copper chloride
• Copper (II) chloride
• Iron (II) sulfide
• Iron (III) sulfide
If the diameter of the black marble is 3.0 cm, and by using the formula for volume, what is a good approximation of its volume? Record to the ones place
Answer:
V = 21.2 cm³
Explanation:
Given data:
Diameter of block = 3.0 cm
Volume of block = ?
Solution:
Formula:
V = 2πr³
First of all we will calculate the radius from diameter.
r = d/2
r = 3.0 cm/2
r = 1.5cm
V = 2(22/7) (1.5cm)³
V = 2(3.14) (3.375cm³)
V = 21.2 cm³
A total of eighteen electrons can be placed into the 3rd energy level.
Explain WHY?
Answer:
each principal energy level above the second contains, in addition to one s orbital and three p orbitals, a set of five d orbitals, called the d sublevel. The five d orbitals can hold up to 10 electrons. Thus, the third level holds a maximum of 18 electrons: 2 in the s orbital, 6 in the three p orbitals, and 10 in the five d orbitals.
Explanation: