Answers
Answer:
1) CO₂ :-
Breaking down the masses :-
C = 12uO = 16uWhat's the sum :-
Mass of C + 2(Mass of O)
⇒ 12u + 2×16u
Relative Formula Mass :-
12u + 2×16u
⇒ 12u + 32u
⇒ 44u
__________________________________________________________
2) CH₄ :-
Breaking down the masses :-
C = 12uH = 1uWhat's the sum :-
Mass of C + 4(Mass of H)
⇒ 12u + 4×1u
Relative Formula Mass :-
12u + 4×1u
⇒ 12u + 4u
⇒ 16u
__________________________________________________________
3) NH₃ :-
Breaking down the masses :-
N = 14uH = 1uWhat's the sum :-
Mass of N + 3(Mass of H)
⇒ 14u + 3×1u
Relative Formula Mass :-
14u + 3×1u
⇒ 14u + 3u
⇒ 17u
__________________________________________________________
4) SO₂ :-
Breaking down the masses :-
S = 32uO = 16uWhat's the sum :-
Mass of S + 2(Mass of O)
⇒ 32u + 2×16u
Relative Formula Mass :-
32u + 2×16u
⇒ 32u + 32u
⇒ 64u
_________________________________________________________
5) CaCO₃ :-
Breaking down the masses :-
Ca = 40uC = 12uO = 16uWhat's the sum :-
Mass of Ca + Mass of C + 3(Mass of O)
⇒ 40u + 12u + 3×16u
Relative Formula Mass :-
40u + 12u + 3×16u
⇒ 40u + 12u + 48u
⇒ 100u
_________________________________________________________
6) H₂O :-
Breaking down the masses :-
H = 1uO = 16uWhat's the sum :-
2(Mass of H) + Mass of O
⇒ 2×1u + 16u
Relative Formula Mass :-
2×1u + 16u
⇒ 2u + 16u
⇒ 18u
_________________________________________________________
7) NaCl :-
Breaking down the masses :-
Na = 23uCl = 35.5uWhat's the sum :-
Mass of Na + Mass of Cl
⇒ 23u + 35.5u
Relative Formula Mass :-
23u + 35.5u
⇒ 58.5u
_________________________________________________________
8) C₂H₆ :-
Breaking down the masses :-
C = 12uH = 1uWhat's the sum :-
2(Mass of C) + 6(Mass of H)
⇒ 2×12u + 6×1u
Relative Formula Mass :-
2×12u + 6×1u
⇒ 24u + 6u
⇒ 30u
_________________________________________________________
9) LiOH :-
Breaking down the masses :-
Li = 6uO = 16uH = 1uWhat's the sum :-
Mass of Li + Mass of O + Mass of H
⇒ 6u + 16u + 1u
Relative Formula Mass :-
6u + 16u + 1u
⇒ 23u
_________________________________________________________
10) H₂SO₄ :-
Breaking down the masses :-
H = 1uS = 32uO = 16uWhat's the sum :-
2(Mass of H) + Mass of S + 4(Mass of O)
⇒ 2×1u + 32u + 4×16u
Relative Formula Mass :-
2×1u + 32u + 4×16u
⇒ 2u + 32u + 64u
⇒ 98u
Related Questions
Oxygen _____.
breaks down food into energy
is found in healthy bones and teeth
is an organic element
is an important element in DNA
Answers
Answer:
first one
Explanation:
can you help me with my question Which of the themes of Hawthorne's "Dr. Heidegger's Experiment" is illustrated by this passage? Paragraph 36: The most singular effect of their gayety was an impulse to mock the infirmity and decrepitude of which they had so lately been the victims. A. Gayety produces an impulse to mock. B. It is a great release to look back on our problems happily C It is human nature to mock or make light of problems we have been delivered from I need to know as soon as possible
Waste water is"________" by bacteria in the secondary treatment.
killed
digested
ignored
heated
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What is feedback in a system?
the balance of competing factors in a system
the definition of what is part of the system and what isn't
the behaviors of the different components of a system
the regulation of a system by the output
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Answer:
the regulation of a system by the output
Explanation:
just took test
Cottontail rabbits closely resemble the fall and winter plants in which they hide
Answers
Answer:
In earlier generations, the rabbits that looked most like their surroundings survived and reproduced.
Explanation:
The cotton-tailed rabbits consist of 20 species that are found in America and have stubby tales with white under them. They're distributed over north, central, and southern America. They live in nests called forms, have an average life span of 2 years. Due to their camaflugeous nature, they change their coat color twice every year to protect themselves from predators.Plzz Help!! Do not do it for the points plz i really need help on this!!!!!!!
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Answer:
All alleles on the X chromosome are dominant
Explanation:
This is because the X chromosome is large and contains many more genes than the smaller Y chromosome. In a sex-linked disease, it is usually males who are affected because they have a single copy of X chromosome that carries the mutation.
Which of the following is a products of cellular respiration that can be used for photosynthesis
Answers
You didn't put the answer choices, but I'm going to assume CO2 because our cells give off CO2 and plants need it in their photosynthesis.
which of the following is not considered a natural resource a.plastic b.gold c.titanium d.coal
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Answer:
Gold
Explanation:
Think of an object , person or place at home that functions similar to the chloroplast.
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Answer:
a genarater powers a home
Explanation:
asap Waste water from nuclear power plants is generally:
cold
muddy
radioactive
warm
Answers
Answer:
Warm is the Correct Answer
Explanation: I know this because the water that is used to cool Nuclear Power plants is usually returned back into the ocean but the water is warmer than the water in the ocean. This can lead to Thermal Polution which can kill species of fish that aren't used to such warm water.
Do muscle cells and skin cells have the same dna? Explain
Answers
Answer: Yes
Explanation:
6coat 6 HRO » 1C6HO6 t 600
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Answer:
Show more detail!
Explanation:
Have a nice day!
Can you please help?
Answers
Answer:
A
Explanation:
as water heats the particles move faster and expand the opposite for cold
GIVING BRAINLIEST!!!
Which air temperatures usually result in snow and other forms of solid precipitation?
A) Freezing air temperatures
B) Cool air temperatures
C) Hot air temperatures
D) Warm air temperatures
Answers
Answer: B) Cool air temperatures
Explanation: Snow requires temperatures at the ground to be near or below freezing.
okay this is the question please answer if you know it because I'm not sure if it's a. or d. and thxxx :)
Answers
Answer:
D!!
Explanation:
what is the endocrine system and how does it work
Answers
What Does the Endocrine System Do?
Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body.
The endocrine hormones help control mood, growth and development, the way our organs work, metabolism , and reproduction.
The endocrine system regulates how much of each hormone is released. This can depend on levels of hormones already in the blood, or on levels of other substances in the blood, like calcium. Many things affect hormone levels, such as stress, infection, and changes in the balance of fluid and minerals in blood.
2. What are three factors that affect birth and/or death rates?
Answers
Answer:
Political, economic, and religious
Explanation:
Age: Mortality rates are different in different age group. Mortality is high among children and old people but it is low among youths.
Sex/gender: Studies have shown that women have longer life expectancy than men. It may be due to biological and social causes that affectthe life expectancy. Besides, it is also found that death rate among infants is also similar to the life expectancy of adults. The death rates for male infants are higher than those of female infants.
Nutrition Levels: The children, especially under five years of age, die due to lack of nutritious foods. A balanced diet is a must for a healthy living. There are deficiency diseases caused by protein, energy, carbohydrate, malnutrition and also by micro-nutrient deficiencies. These are the causes of high death rates.
help me please i have 2 mins left (science)
Answers
Answer:
half of the moon's visible surface
<3
Answer:
A: Half of the moon's visible surface
Yellow-eyed salamanders have been cited as an example of Batesian mimicry; their orange body color and yellow eyes mimic the coloration of the toxic California newt. Although the salamanders are palatable, their mimicry of a unpalatable species tends to prevent predators from attacking. In a follow-up study, Kuchta et al. observed the reaction of Western scrub jays (predators with toxic newt experience) when presented with both a yellow-eyed salamander and a closely related species after being presented with a toxic newt. What was significant about this study
Answers
Answer:
It was a follow-up controlled experiment that showed how a species can influence selection in another species.
Explanation:
A follow-up (cohort) study is a type of study followed over time in order to determine the development of a particular outcome. Moreover, a controlled experiment is one in which conditions are controlled by the researcher, and thereby it is easier to determine the incidence of the outcome. In the case above described, researchers performed a follow-up controlled experiment in which they measured how a species can influence selective processes undergone by other species.
The dew point is the point at which the
water vapor beings to fall out of the air?
True or
False
Answers
Answer:
The dew point is the temperature when water will start to condense out of the air. When air is saturated as much as possible with water vapor it is at the dew point. Air that is holding less vapor than it actually could is below the dew point
HELPPPP PLS ASAP
In sexual reproduction, a zygote is
A the product of fertilization of an egg by sperm
B the gamete responsible for the sex of the offspring
C.an egg that has not been successfully fertilized
D the final stage before the birth of an offspring
Answers
Answer:
A the product of fertilization of an egg by sperm
Answer: A
the product of fertilization of an egg by sperm.
Explanation:
Hope this helped
Effects of heart disease
What are the effects of heart disease ?
Answers
Answer:
hope the answer helps this is what I understand
is sleep deprivation inherited or spontaneous
Answers
Answer:
inherent
Explanation:
its most likely inherited
Large study confirms that insomnia is hereditary. Researchers have identified specific genes that may trigger the development of sleep problems, and have also demonstrated a genetic link between insomnia and psychiatric disorders such as depression, or physical conditions such as type 2 diabetes.
Help please :) brainliest involved
Answers
Answer:
First Option
Explanation:
The other three options basically are the cell theory!
The cell theory states that:
The basic units of life are cells.All cells arise from other pre-existing cells.All living things are made of cells.Since the 3 options state this, the first option (that all of them are part of the theory) should be correct.
Hope this helps.
Consider the illustration placed in the transcription box above. Identify and label on the illustration if any of the following are present: DNA, mRNA, rRNA, tRNA, and/or amino acid.
Answers
Can someone please help me. Complete the sentence.
The mutation caused the fgfria1 gene to encode a form of the Fgfriai protein that
could not send signals to the fish's body, so the common carp had
scales.
large, patchy
small, even
Answers
What is the importance of neutral variation in evolution?
A trait that is neutral in one environment may be advantageous in another.
It is usually removed from the population by natural selection due to its deleterious phenotypes in the environment.
A trait that is neutral will most likely be removed from the gene pool.
It will cause for a population to risk decline and extinction.
Answers
Answer:
A trait that is neutral in one environment may be advantageous in another.
Explanation:
Neutral variation refers to the variation (either genetic or phenotypic variation) which is unaffected by natural selection. Neutral variation is known to increase genetic variation, which is a prerequisite to evolutionary change. An allele may be neutral in one environment and beneficial (or deleterious) in another. In consequence, neutral variation in one environment may increase the response to selection in different environmental conditions.
3. You are studying a population of pangolins (a scaly anteater), and you determine that there are two scale phenotypes: a thick scale that is dominant to a thin scale. You also find that thick-scaled individuals are better able to survive encounters with predators.
What evidence would you need in order to determine if this selective advantage is changing the population? (1 point)
-The number of individuals displaying each phenotype in the current generation.
-The number of individuals displaying each phenotype in the offspring.
-The number of individuals that survive predator encounters.
-The number of individuals displaying each phenotype in both the current generation and the offspring.
Answers
Answer:
The number of individuals displaying each phenotype in both the current generation and the offspring.
Explanation:
The number of individuals displaying each phenotype in both the current generation and the offspring. The correct option is 4.
What is phenotype?The phenotype is the set of observable characteristics or traits of an organism in genetics.
The term encompasses the organism's morphology, developmental processes, biochemical and physiological properties, behaviour, and behavioural products.
To see if the thick scale phenotype's selective advantage is changing the population, we must compare the frequency of the thick scale phenotype in the current generation to its frequency in the next generation.
This would necessitate data on the number of people who exhibit each phenotype in both the current generation and their offspring.
As a result, the evidence we require to determine whether the selective advantage is changing the population is "the number of individuals displaying each phenotype in both the current generation and offspring."
Thus, the correct option is 4.
For more details regarding phenotype, visit:
https://brainly.com/question/20730322
#SPJ3
Plzz Help!! Thanks!!
Answers
Some one please help
Answers
1. Cell
2. Blood
3. Cells
4. Epithelial
5. Tissues
6. Stomach
7. Organs
8. Digestive
9. Organism
10. Human
Answer:
1. cell
2. blood
3. cells
4. epithelial
5. tissues
6. stomach
7. organs
8. digestive
9. organism
10. human
Explanation: Hope this was helpful....
HELP due today in 5 min DONT G O O G L E USE or I’ll get an F
Answers
Answer: Waste managment and how safe the nuclear plants can be. They can really harm people and the enviorment depending on where it is.
Explanation: