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raketka [301]
3 years ago
8

Soaps feel slippery on our hands because they dissolve the oil on our skin, decreasing friction.This is because soap contains

Chemistry
2 answers:
Burka [1]3 years ago
4 0
The best answer to this question is D.a base 
salantis [7]3 years ago
3 0

Answer:

The correct options is, a base.

Explanation:

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A wooden boat discovered just south of the great pyramid in egypt has a carbon-14>carbon-12 ratio that is 72.5% of that found
Kazeer [188]
The half life for C14 is 5730 years.

We assume that Carbon 14/ Carbon 12 ratio was steady for living organisms over time, the problem is actually telling us that
\frac{Nt}{N0} = 0.0725 = \frac{1}{2}ˣ

Take the natural logarithm and In on both sides.
ln(0.725) = ln\frac{1}{2}ˣ
= - 0.3216 = xln (\frac{1}{2} = -0.6931x.
So x = (-.3216) / (-0.6931) = 0.464
or

t/t₁/₂ = 0.464
So t = 0.464 x t₁/₂ = 0.464 * 5730 yrs = 2660 years.
7 0
3 years ago
I don't really understand this worksheet question.​
Citrus2011 [14]
25/2 and 96/X
CROSS MULTIPLY.

2x=2,400.
divide by 2.
x=1,200.

you take the GIVEN MASS of an element, and you put it on top, the coefficient is what it’s over. i believe this is right
3 0
3 years ago
Why do you feel the force of Earth's gravity?
Free_Kalibri [48]
<h3>Question:</h3>

•Why do you feel the force of Earth's gravity?

Answer:

•Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. That's what gives you weight. And if you were on a planet with less mass than Earth, you would weigh less than you do here.

Explanation:

#Let's Study

#I Hope It's Help

#Keep On Learning

#Carry On Learning

5 0
2 years ago
How many electrons would Boron with a +2 charge have?
irina [24]

5 electrons

Boron atomic number 5 has five electrons in its ground state.

Commonly Boron will lose 3 electrons leaving 2 electrons in its most common ionic form.

Explanation:

The atomic number gives the number of protons. Protons which have a positive charge are balanced by an equal number of electrons in a neutral atom.

Boron number 5 has five protons and therefore as a neutral atom also has five electrons.

Boron has an electron configuration of

1s22s22p1

The most stable electron configuration for Boron is

1s2

+ 3 charges. By losing three electrons Boron can achieve the stable electron structure of Helium

Brainliest? :D

4 0
3 years ago
Pls answer I am giving lots of points and need all the work shown. Determine the kb for chloroform when 0.793 moles of solute in
navik [9.2K]

Answer:0.87

Explanation:

8 0
3 years ago
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