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Tomtit [17]
3 years ago
6

Provide a brief description of how the respiratory system works

Chemistry
1 answer:
Rus_ich [418]3 years ago
3 0

Answer:

The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out. When you breathe in, the diaphragm moves downward toward the abdomen, and the rib muscles pull the ribs upward and outward.

Explanation:

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2. In photosynthesis, light energy is transformed into chemical energy. In
antoniya [11.8K]

Answer:

D. Glucose

Explanation:

The process of photosynthesis is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen and chemical energy stored in glucose.

3 0
3 years ago
Use the mass spectrum of rubidium to determine the atomic mass of rubidium.
Svetlanka [38]
The mass spectrum is a visual graph that shows a Intensity vs Mass plot, like that shown in the picture. This is an actual mass spectrometer diagram for Rubidium. The mass of the isotopes of the Rb element is along the x-axis, while the y-axis is the relative abundance. The atomic mass is determined to be:

∑(Mass×Intensity) = 85(1-0.38) + 87(0.38) = 85.76 amu

8 0
4 years ago
If you make an electromagnet using a battery circuit and a steel nail, how can you increase its magnetic strength?
kotegsom [21]

Answer:

C I think

Explanation:

I learned this last year

4 0
3 years ago
Read 2 more answers
Which sample contains the largest number of molecules?
joja [24]
The largest number of molecules  is the same as the largest number of moles of this molecules
to calculate the number of moles you have to divide the mass by the molar mass

molar masses:
CO2:  44,01 g/mol
CH4: 16,04 g/mol
CBr4: 331,63 g/mol
CHBr3: 252,73 g/mol

largest nº of mol= 100/(the smallest molar mass possible)
= 100/16,04
=6,23 moles

all other molecules would be smaller than 6,23 moles because the molar mass is so high.

The answer is B : 1<span>00 g of ch4</span>
4 0
4 years ago
What volume in milliliters of 0.0130 M Ca(OH)₂ is required to neutralize 75.0 mL of 0.0300 M HCl?
Orlov [11]
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay-ay-ay-ay
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay
Remember the first time we met
You was at the mall wit yo friend
I was scared to approach ya
But then you came closer
Hopin' you would give me a chance
Who would have ever knew
That we would ever be more than friends
We're real worldwide, breakin' all the rules
She like a song played again and again
That girl, like something off a poster
That girl, is a dime they say
That girl, is a gun to my holster
She's running through my mind all day, ay
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay-ay-ay-ay
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay-ay-ay-ay
See you been all around the globe
Not once did you leave my mind
We talk on the phone, from night 'til the morn'
Girl, you really changed my life
Doin' things I never do
I'm in the kitchen cookin' things she likes
We're real worldwide, breakin' all the rules
Someday I wanna make you my wife
That girl, like something off a poster
That girl, is a dime they say (Hey)
That girl, is a gun to my holster
She's running through my mind all day, ay
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay-ay-ay-ay
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay-ay-ay-ay
I can be your melody
Oh, girl, I could write you a symphony
The one that could fill your fantasies
So come baby girl let's sing with me, ay
I can be your melody
Oh, girl, I could write you a symphony
The one that could fill your fantasies
So come baby girl let's sing with me, ay
Na na na na na na na
Na na na na na na
Shawty got me singin'
Na na na na na na na
Na na na na na na
Now she got me singin'
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay-ay-ay-ay
Shawty's like a melody in my head
That I can't keep out, got me singin' like
Na na na na everyday
It's like my iPod's stuck on replay
Replay-ay-ay-ay
8 0
3 years ago
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