Answer:
0.971
Explanation:
The pressure (P) in atmospheres (atm) the balloon was filled to will be
P = P1 +P2 + P3
where P1 is the pressure in atm of Helium (0.5 atm)
P2 is the pressure in atm of Nitrogen (X atm)
P3 is the pressure in atm of Hydrogen (0.4 atm)
The value of P2 provided in the question is in mmHg
To convert we have
1 atm = 760 mmHg
X atm = 54 mmHg
X = 54 × 1/760
X = 0.071 atm
Hence, P2 = 0.071 atm
Thus, from the formula earlier
P = 0.5 + 0.071 + 0.4
P = 0.971 atm
13) Water is 88.8% oxygen by mass. What mass of water contains 32.0 g of oxygen? A) 36.036 g B) 36.04 g C) 36.0 g D) 28.4 g E) 28.42 g F) 28.416 g
Answer:
Option A. 36.036 g
Explanation:
From the question given above, the following data were obtained:
Percentage of oxygen in water = 88.8%
Mass of oxygen = 32 g
Mass of water =..?
Mass of water that contains 32 g of oxygen can be obtained as follow:
Percentage of oxygen = mass oxygen /mass of water × 100
88.8% = 32/mass of water
88.8 /100 = 32/mass of water
Cross multiply
88.8 × mass of water = 100 × 32
88.8 × mass of water = 3200
Divide both side by 88.8
Mass of water = 3200/88.8
Mass of water = 36.036 g
Therefore, the mass of the water that contains 32 g of oxygen is 36.036 g
What does the force of gravity between two objects depend on?
A. The masses of the two objects and the distance between them
B. Only the mass of the smaller object and its distance from the
larger object
C. Only the masses of the two objects
D. The mass of the smaller object and the speed at which it's moving
Answer:
A
Explanation:
Answer:
Explanation:
The formula for the force of gravity is
F=G * m1 * m2 / r^2
G is a constant. It does not change with the use of the formula. There are 2 masses, so the force depends on the masses.
The right hand side is divided by r^2. that's a distance. So that's the other quantity influencing the Force.
B: incorrect. Both objects have masses. That determines the force between them.
C: incorrect. It's also the distance between them.
D: incorrect. The formula contains nothing to indicate that velocity is important.
The answer is A
Round to 3 significant figures.
21.4501
Answer:
it is twenty-one point four five zero one or 2.14501 × 101.
Explanation:
your welcome
Why hydrocarbons are regarded as parent organic compounds?
Answer:
hydrocarbons always consist hydrogen and carbon and the simplest organic compounds are also made up of hydrogen and carbon
what area of chemistry are marine chemist
Answer:
As a marine chemist, you study the chemical properties of different bodies of water with the goal of making them safer and cleaner. For this to happen, you determine the potential effects of foreign chemicals, as well as the impact of aquatic transportation and construction, on rivers, lakes, and oceans.
Explanation:
N 2 , O 2 , and Cu are elements. True False
Answer:
True
Explanation:
N2 is nitrogen.
O2 is oxygen.
CU is copper.
They are all elements. Hope this helps!
What is an element?
What is it represented by?
What is it made up of?
Give an example
Answer:
what is an element?
element is a pure substance which cannot be broken down by chemical means
what is it represented by?
By its symbol and atomic number
what is it made up off?
It is made up of it's owm type of atom.
Example
carbon,oxygen,hydrogen,gold,silver,iron
what happens first during cellular respiration
Answer:
glcolysis
Explanation:
Glcolysis uses glucose to create ATP within the cytoplasm of the cell.
Answer:
the answer is glycolysis
Explanation:
After developing a hypothesis, a scientist is ready to test it by A. gathering facts and evidence. B. conducting an experiment. C. posing questions about an observation. D. communicating with other scientists.
Answer:
B.
Explanation:
You are a marine biologist who wants to study what type of zooplankton (microscopic animals that live in the ocean and feed larger organisms) inhabit a particular area of the Pacific Ocean. You have taken your samples, but now need to collect your data. What advantage would using a compound light microscope have over using a dissecting microscope? can anyone help me
Answer:
The advantage of the compound light microscope over the dissecting microscope is the magnification power of the telescope. Compound light microscope magnifies from 40x up to 1,000x while dissecting microscope magnifies up to 40 x only. In this regard, more magnification power is advantageous to view smaller objects.
Some one plz help me out ASAP!
Answer:
can you help me with my science
Help I don't understand how to do this I need answerssss
Answer: what is this sorry
2) 2,047m2 + 42m = ?
Answer: It's 2,089m2
Explanation:
are carbon atoms alive and why? (plz)
Answer:
yyes they are lovely . . . . .
Answer:
No they are not alive
Explanation:
Since they are just atoms how would they be alive? They also make up all living things so how would they be made of themselves
All unauthorized experiments are prohibited. True or false
Answer:
true....................
what is the electron configuration for ground-state Boron
Answer:
The remaining electron will go in the 2p orbital. Therefore the B electron configuration will be 1s22s22p1.
Need Answer Quick
Copper is used in wiring because its metallic bonding gives its _______ a high degree of freedom and the material a high conductivity.
electrons
neutrons
protons
Answer:
Electrons
Explanation:
Which of the following is NOT a trait of a scientist?
We
Curiosity
O Creativity
Logical
O inaccurate
Answer:
I think inaccurate is not a trait.
Explanation:
how do you do this? i got 48 yards but 16 feet isn't 48 yards so what am i doing wrong?
Answer:
16 feet is 5.3 repeating yards
Explanation:
ANALYZE A ball of clay is manipulated into different shapes in each of the images
below. Does the amount of mass and matter in each of the images below change as
the size and shape of the clay ball is changed? Explain your reasoning.
Answer:
The amount of mass and matter in all the transformations of the clay ball will remain the same or constant
Explanation:
From the law of conservation of mass we have, for an enclosed system to and from which there is no transfer of matter or energy, mass cannot be created nor destroyed, and remains constant at the given value, but the matter which make up the mass can be changed into different forms
Therefore, the clay ball can be transformed into different shapes and will still posses the same initial mass before the transformation, provided there are no transfer of matter or energy from the clay ball system.
A sample of helium gas has a volume of 1.25 L and a temperature of 22 °C, under a constant pressure. What is the new volume if the temperature is increased to 45 °C?
Answer:
the new volume is 1.35L
Explanation:
The computation of the new volume in the case when the temperature rises to 45 degrees is shown below:
GIven that
Volume = 1.25L
And, the temperature is 22 degrees celsius
So, [tex]T_1[/tex] = (275 + 22)k
= 297 k
Now
[tex]T_2[/tex] = (275 + 45)k
= 320 k
Now as it is a constant pressure
So, the new volume is
[tex]\frac{V_1}{T_1} = \frac{V_2}{T_2} \\\\V_2 = \frac{V_1}{T_1}\times T_2 \\\\= \frac{1.25}{297}\times 320[/tex]
= 1.35L
hence, the new volume is 1.35L
The dimensions of water tank are 1.0 m wide by 3.25 m long by 1.50 m tall what is the volume of the water tank t
Answer:
4.9 m^3
Explanation:
volume= 1.0 x 3.25 x 1.50= 4.875 -> 4.9m^3
A new material formed in a chemical reaction is called a?
atom
element
product
reactant
1. How many miles are in 1,000,000 centimeters?
Answer:
I looked it up and it said 6.214
In the Inca civilization what was the quipo used for?
It involved knots in strings called quipu. The quipu was not a calculator, rather it was a storage device. Remember that the Incas had no written records and so the quipu played a major role in the administration of the Inca empire since it allowed numerical information to be kept.
What is an organism and microorganisms?plz help ASAP!
Which of the following elements has the greatest metallic character?
Rb
Mo
Au
B
Answer:
Au. fifififiof
Explanation:
djdjdjndsksidndndnendnnd
Answer:
Rb
Explanation:
can someone pls help
Answer:
1.2km=1,200,000! hope this helps
Wood is burned in a campfire. Determine the type(s) of energy present before and after the reaction.
Answer: when you burn something every action has a reaction. so if you put wood in the fire the wood would burn up into this coal like block once completely burnt through. after there is no more wood left to burn the fire would slowly die and there would just be the remains of the wooden block.
how many eggs are produced at a time in human body?
Answer: Well, at birth, there are approximately 1 million eggs. And at the time of puberty, only 300,000 remain.
Explanation:
Answer:
only one egg will be produced by a single ovary in a month. the ovaries function in an alternate manner., ie., one ovary will release an egg in one month and the other ovary will release the ovum next month.
