Answers
Related Questions
Around the world, scientists have found matching fossils, landforms, and
continental shelves. Mid-ocean ridges and trenches were discovered on
the
Together these findings serve as evidence
that Earth's surface is made up of moving.
Answers
Answer:
Use
Explanation:
Suppose you are given an unknown solution and you need to test its pH. The pH meter is broken, and all you have is the indicator bromothymol blue to use. You add two drops of bromothymol blue to 10 mL of your unknown, and the solution turns a bright yellow. Which of the following is the best estimate of the pH of the unknown solution?
a. 8.5
b. 11.5
c. 1.5
d. 7.0
Answers
Answer: The best estimate of the pH of the unknown solution is 1.5. Option C.
Explanation:
A substance which shows different colours in acidic and basic media is called an indicator. Typical examples of common indicators includes:
--> Litmus: colour in acid ( red), colour in base (blue) and colour in neutral (purple).
--> Methyl orange: Colour in acid (red), colour in base (yellow) and colour in neutral (Orange).
--> Phenolphthalein: Colour in acid (colourless), colour in base (pink) and colour in neutral (colourless).
--> BROMOTHYMOL BLUE: Colour in acid ( yellow), colour in base (blue) and colour in neutral (green).
The indicators are themselves weak organic acids or bases and hence slightly dissociated in solution. The colour of the indicator at any given point depends on the relative proportion of the dissociated ions to the undissociated molecules since they have different colours.
From the question, since the pH meter is broken, and the pH of the unknown solution is to be determined,using an indicator instead. The best estimate of the pH of the unknown solution is 1.5. This is so because BROMOTHYMOL BLUE is blue when the pH is greater than 7.6, green when the pH is between 6-7.6, and yellow when the pH is less than 6. And pH value of 1.5 is less than 6, indicating the solution is very acidic.
Are viruses composed of cells?
Answers
Answer:
No
Explanation:
Viruses are not made out of cells. A single virus particle is known as a virion, and is made up of a set of genes bundled within a protective protein shell called a capsid. Certain virus strains will have an extra membrane (lipid bilayer) surrounding it called an envelope.
Answer:
Viruses are not composed of cells
Explain why the study of fossils is important to scientists.
Answers
Answer:
so they can find out what type of fossil it was
Explanation:
By studying fossil records we can determine how long life existed on earth.
At the end of a sunny day, Cindy turns on an electric fan to cool off her room. When she turns off the fan a little later, she notices that the area around the motor is warmer than it was when she turned on the fan. What is the most likely explanation for this?
1.Electrical energy was transformed into heat and energy of motion.
2.Solar energy was transformed into heat and energy of motion.
3.Solar energy was transformed into electrical energy and heat.
4.Electrical energy was transformed into sound and light.
Answers
Answer:
One
Explanation:
Because it never says that the fan used solar energy and 4 wouldn't make it heat up.
After transcription has occurred the mRNA will leave the nucleus and find its way
to the which organelle
Answers
does coal releases carbon dioxide into the atmosphere?
Answers
Answer:
yes
Explanation:
Coal is an important source of energy in the United States, and the Nation's reliance on this fossil fuel for electricity generation is growing. The combustion of coal, however, adds a significant amount of carbon dioxide to the atmosphere per unit of heat energy, more than does the combustion of other fossil fuels
Fossil fuels release greenhouse gases into the atmosphere, which increases levels of carbon dioxide and other gases, trapping heat, and contributing to global climate change. This means that coal does release greenhouse gases, like carbon dioxide and nitrous oxide, into the atmosphere.
What shape is used in Model 1 to represent an A antigen?
Answers
Answer: Type A red blood cells have a-antigens, while type O has none.
Explanation:
Help me please :x brainliest to correct answer
Taiwan is thought to be the primary root of all of the __________ peoples that range from Madagascar to Hawaii.
A Chinese
B Austronesian
C Native American
D Japanese
Answers
Answer:
B
Explanation:
I hope this helps!!! I am very sorry if it was wrong though!!!
Answer: b
Explanation:
What is the most superior upper body muscle?
Answers
Obturator Externus: This is one of the smaller muscles of the medial thigh, and it is located most superiorly.
Answer:
Obturator Externus
Obturator Externus: This is one of the smaller muscles of the medial thigh, and it is located most superiorly.
Explanation:
WILL GIVE BRAINLIEST
Theodosius Dobzhansky discovered that successful species tend to have
a wide variety of genes that do not appear to be useful to the species in
its present environment. What did this discovery help explain about
genetics and the changes that occur in a species over time?
A. Species in a stable environment are more resistant to a changing environment
B. Species with greater genetic diversity adapt more easily to changing
environments.
C. Changing environments prevent species from adapting and surviving.
D.Environments with more organisms tend to have more successful species.
Answers
Dolphin fins and shark fins:
a.
are an example of convergence.
b.
are an example of divergence.
c.
suggest these two populations could interbreed.
d.
are evidence that adaptive evolution is mainly driven by random forces.
e.
None of the above is correct.
Answers
Answer:
a
Explanation:
Consider the following goal: Your students have been learning about different mammals. You would like to have different students become experts on a particular system within mammals (e.g. circulatory, respiratory, reproductive, etc) and share that knowledge with the class. Which cooperative learning model is likely to be most successful in reaching this goal
Answers
Answer:
The correct answer is - JIGSAW II
Explanation:
JIGSAW II is a learning strategy that increases the sense of responsiblity of the student by making each student an expert or a specialist in a particular unit or part of a topic and allows them to teach to other students of class or group.
It is a cooperative learning strategy that is used in the given question where different students become specialists on a particular system within mammals and teach to the class.
please help me im timed and will give brainiest:(
Answers
Answer:
turtles, crocodiles, snakes, dinosaurs, and birds
Explanation:
Answer:
why u ghosting me
Explanation:
What percentage of people are likely to have mutations in their DNA?
Answers
Answer:
20 percent.
Explanation:
Hope this helps!
If a flower is wilting, which structure inside its cells lacks water?
vacuole
cell wall
carpel
chloroplast
Answers
Answer:
Vacuole
Explanation:
The central vacuole stores water in the cell and helps maintain water pressure, or turgor pressure, within the cell. The plant wilts because the central vacuole is empty and the cell is partially collapsed. Once the plant is watered and the central vacuole is full again, the plant will return to its normal position and appearance.
How do whales differ from fish
A) whales use blowholes for breathing
B) whales have scales that cover the skin
C) whales develop lungs following metamorphosis
D) whales reproduce through external fertilization
Answers
Answer:
awsner is c, whales develop lungs following metamorphis
Explanation:
WILL GIVE BRAINLIEST
The hipbone of a snake is an example of
A.an analogous structure
B.a tertiary structure
C.a Vestigial structure
D.a homologous structure
Answers
Answer:
OH!! D.a homologous structure
Explanation:
I learned this in school
Which of the following contributed to the Indian Ocean tsunami disaster that occurred in December 2004?
A)
The earthquake that caused the tsunami was the largest earthquake ever recorded.
B)
Most of those killed lived in India, where buildings were not constructed to withstand the forces of the wave.
C)
Levees built to withstand tsunamis failed due to poor construction.
D)
There was no tsunami warning system in place in the Indian Ocean at the time.
Answers
Answer:
c
Explanation:
it seems the most correct out of all of them because as you can see it says .
Answer:
Its D) There was no warning system in place.
Explanation:
I got it right on edge 2021
Describe hurricanes and the impact they
can have.
Answers
Explanation:
When a hurricane strikes a coastal area,it brings a number of serious hazards. These hazards include heavy rains, high winds, a storm surge, and even tornadoes
Answer:
look above
Explanation:
state zeroth law of thermodynamics
Answers
Answer:
This is the last law of thermodynamics that we know of so far. The zeroth law of thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other.
Explanation:
Leona drew a diagram to compare ginkgoes and conifers.
Which characteristic belongs in the area marked X?
are deciduous
produce cones
look like palm trees
are the largest group
Answers
Answer:
A. are deciduous
Explanation:
Ginkgo trees are broadleaf trees or deciduous trees.
Answer: The answer is A .Are deciduous
Explanation:) Hope this helps brainliest would be appreciated
:);):);)
Please answer the question under
Answers
Answer:
c. cell differentiation
Explanation:
I ssearched it up, and I took biology last semester. This is the only answer that makes sense.
PLS HELP IM IN A TEST
crickets determine their sex in offspring with the X0 system. If a female cricket has 22 total chromosomes, including autosomes and sex chromosomes, the male must have ______ total chromosomes
A) 23
B) 22
C) 11
D) 21
Answers
1 point
4. Identify Layer 1 of the Earth
1
Answers
The Crust.
The Mantle.
Convection Currents.
Outer Core.
Inner Core.
I don’t know if this what you’re looking for but here you go, hope it helps somehow
mRNA Codon chart Using the above chart, name the amino acid that is coded for by a strand of DNA: CCA O Alanine O Arginine Isoleucine O Proline
Answers
Answer:
[tex]\boxed {\boxed {\sf Proline}}[/tex]
Explanation:
We are given a codon (set of three nucleotides) and asked to find the amino acid it codes for.
There are a few types of charts that can be used, for example, the circular one attached starts in the middle and goes outward. Follow the sequence of the three letters from the center.
Another chart attached can be used. For this, we must find the intersection of the three letters. Located the 1st letter on the left, the 2nd on the top, and the 3rd on the right.
Based on both charts, proline is the correct amino acid.
What is a group called that does not have anything changed
Answers
Answer:
Control group!
Explanation:
The group that nothing is changed in is called the Control Group! It is usually used for comparison to the tested groups to see what has changed.
Have a great day :]
What type of relationship with a bird a fish a tiger and deer have?
Answers
a food cycle
Explanation:
a fish will be eaten by a bird and a deer will be eaten by a tiger. it is only a food cycle
plants-deer-tiger etc.
fish and deer are the prey and tiger and bird are predators.
What are the muscles used to push a heavy cart in front of you? which are primary and which are synergist?
Answers
Answer:
flexation muscles and relaxation muscles
2. A man has type A blood and his wife has type B blood. A physician types the blood of their four children
and finds that each of the children has a different blood type. What are the genotypes of the parents? How
would you explain that all four blood types could be represented by these four children?
Answers
Answer:
A person with type A blood receiving a transfusion of type B or AB blood would have an ABO incompatibility reaction. In an ABO incompatibility reaction, your immune system attacks the new blood cells and destroys them. If you have type AB blood, you have both A and B antigens .
hope it will help . please mark me as brainlist