/sci/ - Science & Math

>mfw most physicists are like op

>>5554652
HA

> this thread

>>4063123

>Ecology is the scientific study of the relations that living organisms have with respect to each other and their natural environment.

>>4057914
>nano technology
>really just nano boobs and booty

<span class="math">\mathrm{Ca(NO_{3})_{2}\cdot X(H_{2}O)}[/spoiler]

Finding X:

30.4 g H2O = 1.689 mol H2O
69.6 g Ca(NO3)2 = 0.424 mol Ca(NO3)2

1.689/0.424 = 4

So:

<span class="math">\mathrm{Ca(NO_{3})_{2}\cdot 4(H_{2}O)}[/spoiler]

Check:
<span class="math">\frac{4*18\;\mathrm{mol\;H20}}{\mathrm{236\;formula\;weight}}=30%}[/spoiler]

>>3926494
>Petroleum Engineering

>>3819243

this is fucking awesome!!

I thought aspies were suppose to be smart?

>>3803672
Naysayers gonna neigh.

>mfw the robot "says" that's nice.

>>2749405

>comments on foxnews arguing about religion
>/sci/ also arguing about the same thing
>foxnews and /sci/ are one

>>2638388
>he thinks fractions are numbers instead of equations

>>2522415
>He thinks global nuclear stockpiles are on the order of the hundreds instead of the tens of thousands!

>>2512206
>meatheads
>conversation

I realize astrology isn't a science, but...i'm a newfag to the whole astrological signs changing. It was mentioned to me in the seventh grade or so during class and I didn't really get it then.

So is it right to say that sun symbols are measured by their equinoxes, so nothing has changed?
I realize that your symbol is originally based on the constellation the sun was in the day you were born, so how does the earth wobbling change that?
Also, if astrological signs are marked by equinoxes how would that change if they are or are not changed?
If someone could help explain this to me, it'd be much appreciated.

>mfw mad scientist thread

>University
>Not in UK

AMERICAN EDUCATION SYSTEM

medfags, I'm a bit stumped in our high school level human phys case study:

- 30 y/o African American/Native American woman
- Miscarriage @10 weeks, check up 6 weeks later
- Reports joint pain in both wrists and right knee
- Low Grade fever (99.6F)
- No acute infection
- Rashes on arm and top of feet
- Lost 10 lbs since miscarriage


The case study says a rheumatoid condition, and the common suggestion going around is Lupus...but our teacher says every H. Phys group has always misdiagnosed this study.

Is there any concrete answer? Is it a combination of the two? Why is/isn't it Lupus?

inb4house

>>1860558
>literally asspained at the truth

God I lol'd.

>>1478519
That's not a very goods reason for trust, though.

LOL SO SCIENTIFIC XD

Guys I need some help with a take home test. My teacher is a moron and can't teach for shit so I need some help here. I tried everything I could before asking you guys so I'm not being a lazy prick.

First, I need the distance between these pairs...

A(5, 2) and B(5, -2)

C(1, 1) and D(3, 2)

E(-4,0) and F(-6, 3)


Need this simplified

√ 100
_____
√ 2
.
.
.
√ 15 * √ 6
.
.
.
√ 5 * 45
.
.
.
√ 56
____
√ 7
.
.
.
Need these simplified by rationalizing the denominator

√ 5
___
√ 3
.
.
.
14
___
√ 7
.
.
.
3
______
5-√ 15
.
.
.
4
_______
5+√ 5
.
.
.

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