This chemical equation represents a chemical reaction.
2HNO3 + Na2SO3 - 2NaNO3 + H2O + S02
Which chemical is a reactant in the reaction?
O A. Na so
B. SO2
O C. H20
OD. NaNO3
Answers
Answer:
OPTION A is the reactant
Explanation:
This is an acid-base reaction (neutralization): HNO3 is an acid, Na2SO3 is a base.
Answer:
A.
Explanation:
reactants are on the left side of the arrow
Related Questions
What is Xd and tbh
Pls tell em
Answers
Answer:
tbh means to be honest
XD 1. an expression used in text messages or e-mails signaling happiness or laughter. XD is an emoticon. X represents closed eyes while D stands for an open mouth. OMG! What you did today was so funny!!! XD.
Explanation:
Answer:
XD is a face like a laughing face the X is the 2 eyes crossing and the D is the mouth
Explanation:
eyes↓ ↓mouth
XD
What happens to the atoms in a scoop of ice cream as it melts? They decrease in temperature. They lose energy. They vibrate faster. They are held tightly in a fixed position.
Answers
Answer:
they vibrate faster
Explanation:
Answer:
They Vibrate Faster
Explanation:
Did it on Edge 2020
-Its C
cause of drug addiction.
Answers
Answer:
The cause of drug addiction is simply because of doing drugs lol
Hope this helped, have a good day
I hope this helped
Fluid in the inner ear creates a sense of ____.
Answers
Answer:
Balance
Explanation:
After reading the paragraph below, answer the question that follows.Scientists interested in knowing the best way to restore an area after a temporary road was built through it completed a study comparing two treatments: (1) restoring the contour of an area so that there was no longer a depression or cut-through where the road was previously and (2) simply abandoning the area to allow vegetation to return on its own. They wanted to know whether either or both of these treatments would return the aboveground vegetation and the belowground soil properties to their original state, as seen in a similar area where there had never been a road.In this experiment, the area that had never had a road is useful to the experiment because:________________
Answers
Answer:
it acts as the control group in the experiment
Explanation:
The area that had never had a road is extremely useful because it acts as the control group in the experiment. The researchers can use this untouched area of land as a benchmark for the rest of the experiment. Once they implement both test scenarios on the pieces of road, they can then compare the results gathered from each study with the data gathered from the area that had never been a road in order to determine which option provides results that best compare to the original properties of the piece of area that has never been made into a road.
________ cells are involved in fertilization.
a.
diploid
c.
triploid
b.
haploid
d.
all of the above
Answers
Answer:
all of the above but not sure
Which of the following best describes the use of a renewable resource?
A)Propane is a product you might use to barbeque; it comes from a natural gas and processing oil
B) Coal is mined from deep passages dug in mountainside and burned to generate electricity
C) Oil is pumped from beat his the ocean floor and refined into jet fuel to power airplanes
D) wind turbines gather energy from the wind and convert it into electrical energy
Answers
Answer:
D. wind turbines gather energy from the wind and convert it into electrical energy
Explanation:
All other answers are nonrenewable resources
Which of the following best describes all macromolecules?
A. They are organic molecules that all contain carbon.
O
B. They are organic molecules that all contain nitrogen.
O
C. They are inorganic molecules that all contain nitrogen.
6
D. They are inorganic molecules that all contain carbon.
Answers
Answer:
A. They are organic molecules that all contain carbon.
Explanation:
All known life on earth is carbon-based. Most molecules used as building blocks are organic i.e. consisting of based on carbon. This means that they consist of atoms of carbon, hydrogen, oxygen with other variations like nitrogen.
Some macromolecules include glucose-based polysaccharides, amino-acid based proteins and lipids consisting of glycerol and fatty acids.
Which feature causes a gap in the geologic record?
Answers
the answer to your question is Unconformities
4. Which of the following statements correctly compares the function of nucleic
acids and proteins?
A. Proteins speed up chemical reactions; nucleic acids provide structural support.
B. Proteins store energy, nucleic acids provide energy
C. Proteins help build cell membranes; nucleic acids store energy
D. Proteins express genetic information; nucleic acids store genetic information
Answers
Answer:
B
Explanation:
Proteins do store energy and nucleic acids provide energy thats why B is correct.
where did genetic engineering come from
Answers
_: the rate at which electric charge passes a point in a circuit.
A.) voltage
B.) circuit
C.) current
Answers
What is the final product of transcription
Answers
In terms of gene, chromosome, and DNA were put in order of size. what would be the order from smallest to biggest?
Answers
Answer:
According to the order from smallest to largest, the order will be: Nucleotide, Gene, DNA, Chromatin, Chromatid, Chromosome
What is the role of lactase? which sugar does the act on in reaction?
Answers
Answer:
This enzyme helps to digest lactose, a sugar found in milk and other dairy products. Lactase is produced by cells that line the walls of the small intestine. ... Lactase functions at the brush border to break down lactose into smaller sugars called glucose and galactose for absorption.
Explanation:
Lactase is an enzyme produced by many organisms. It is located in the brush border of the small intestine of humans and other mammals. Lactase is essential to the complete digestion of whole milk; it breaks down lactose, a sugar which gives milk its sweetness.
Explain the 3 types of symbiosis. Give examples of each and explain which organism is benefited, harmed or is neutral to the relationship.
Answers
Answer:
mutualism-commensalism-parasitism.
Explanation:
There are three different types of symbiotic relationships: mutualism, commensalism, and parasitism. Mutualism: both partners benefit. ... Commensalism: only one species benefits while the other is neither helped nor harmed.
Mutualism: both partners benefit. An example of mutualism is the relationship between the Egyptian plover and the crocodile. ...
Commensalism: only one species benefits while the other is neither helped nor harmed. ...
Parasitism: One organism (the parasite) gains, while the other (the host) suffers.
Benifited and harmed :-Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.
HOPE MY ANSWER IS HELPFUL
how many chromosomes do birds have.
Answers
80 chromosomes
Answer:
80 Chromosomes
Explanation:
In general, bird karyotypes have a high diploid number (2n) of typically around 80 chromosomes that are divided into macro- and microchromosomes.
Who is mainly responsible for this niche or role: males or females?
Answers
Answer:
Females
Explanation:
trust me its females
Extension Questions
12. Scientists may design an experiment with a control group, which is a set of organisms or sam-
ples that do not receive the treatment (the independent variable) that is being tested. Scientists
can then compare normal changes in organisms or samples with those that may have occurred
because of the treatment. The idea of a control group is not the same as a controlled variable.
Suppose a scientist is doing an experiment to determine the effect of an all-organic diet on the
occurrence of cancer in rats.
a. What variables should the scientist control in the experiment?
b. Describe the control group for this experiment.
Answers
Answer:
a) same species of rats
b) Some rats will not be given the all-organic diet
Explanation:
In an experiment, a control group is the group that do not receive the treatment (the independent variable) that is being tested while the control variables or constants are the variables that must be kept constant throughout the course of the experiment in order not to alter the experiment's outcome.
In this experiment where a scientist is trying to determine the effect of an all-organic diet on the occurrence of cancer in rats, the control group would be the GROUP OF RAT THAT DO NOT RECEIVE THE ORGANIC DIET. Also, a control variable would be the SAME SPECIES OF RAT USED throughout the experiment.
Please help me ur nice...
Answers
Answer:
The answer is A
Explanation:
In Figure 7-2, which picture shows weathering that involves carbonic acid: A, B, or C?
Answers
Answer: C
Explanation: Carbonic acid is the culprit when it comes to the carbonation type of chemical weathering. As rain goes through the air and into the ground, it grabs carbon dioxide, creating carbonic acid. This weak acid reacts with the calcium carbonate in stones when it seeps into the cracks.
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which particles do plants absorb to obtain energy?  a. photons  b. electrons  c. atoms  d. molecules
Answers
Answ
i think its a
Explanation:
Answer:
It's a. photons(light energy)
How is a cell a system , ANWSER IN YOUR OWN WORDS ?
Answers
Explanation: the movement of organelles and other substances within cells. Endoplasmic reticulum
Some people can roll the tongue into a tube shape, while others cannot. Practicing is not likely to help because tongue-rolling is an inherited trait. The allele for rolling the tongue (R) is dominant to the allele for not being able to roll the tongue (r).
Create a Punnett square. Make sure that it shows a cross between two parents with at least one R allele.
Answers
Hope this helps :)
The Punnett square, showing a cross between two parents with at least one R (rolling the tongue) allele, is mentioned below.
What is a Punnet square?A Punnett square is a graphical tool used by geneticists to predict the probability of offspring genotypes resulting from a cross between two parents with known genotypes.
In the Punnett square, the uppercase R represents the dominant allele for tongue rolling, and the lowercase r represents the recessive allele for not being able to roll the tongue.
The possible offspring genotypes are shown in the boxes within the table. The ratio of genotypes is 1:2:1, with 25% of the offspring having the homozygous dominant genotype (RR), 50% having the heterozygous genotype (Rr), and 25% having the homozygous recessive genotype (rr).
Learn more about Punnet square, here:
https://brainly.com/question/29577186
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Identical twins are genetically the same but do not always look or act exactly alike. Propose a hypothesis to explain this.
Answers
Answer:
It is because no two people should have the same DNA, even twins.
Answer:
Explanation:
The independent assortment of
Summary of natural influences of a savanna.
Answers
Answer:
The African savanna ecosystem is a tropical grassland with warm temperatures year-round and with its highest seasonal rainfall in the summer. The savanna is characterized by grasses and small or dispersed trees that do not form a closed canopy, allowing sunlight to reach the ground. The African savanna contains a diverse community of organisms that interact to form a complex food web.
Pathogens must be ____ to spread and not all infectious diseases are contagious or cause harm to every animal that hosts it.
Answers
Which of these is purposefully changed during a scientific investigation? (4 points)
a
Test variable (independent variable)
b
Outcome variable (dependent variable)
c
Control group
d
Hypothesis
Answers
Answer:
The answer is A. Test variable (independent variable)! :)
Explanation:
Hope this helps; I took the test and got it correct!!
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The reintroduction of wolves their angered nearby farmers because they feared their animals would be hunted. What level of responsibility do you think the national park should have towards their neighbors? What level of responsibility to the neighbors have to protect their own property? Use reasons and examples to justify your answer.
Answers
how do antibiotics seek out antibacterial cells?
Answers
Answer:
many antibiotics includes penicillin, work by attacking the cell wall of bacteria. specifically, the drugs prevent the bacteria from synthesizing a molecule in the cell wall called peptidoglycan.
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