Answer:
no it doesn't change back
fine here When you dissolve salt in water, the sodium chloride dissociates in Na + ions and Cl - ions, which may be written as a chemical equation : NaCl (s) → Na + (aq) + Cl - (aq) Therefore, dissolving salt in water is a chemical change. The reactant (sodium chloride, or NaCl) is different from the products (sodium cation and chlorine anion).
Please help!!
What do scientists do when they want to name a new organism?
all of the above
They see how the organism is similar to other organisms.
They see if the organism has the characteristics of an animal or plant.
They look at what makes the organism unique.
Answer:
All of the above
Explanation:
I believe all three are true. They see how the organism is similar to other organisms. They see if the organism has the characteristics of an animal or plant. They look at what makes the organism unique.
Think of at least 10 things you can do to help preserve our freshwater or to clean up our polluted water
Answer:
#1 Clean up trash so, they don't get into sewers.
#2 Don't use up water.
#3 Do small loads of laundry
#4 Keep shower time minimal
#5 Pay your taxes to the government can fix pipe lines or fix lead-made pipes
( Five ideas, that's all i can think of)
Explanation:
To calculate acceleration you must
Select one:
multiply the force and mass
add the force and mass
divide the mass by the force
divide the force by the mass
A soft lump of clay has water run on top of it. Most of the water and clay runs off the table. After a long while, the water is turned off and allowed to dry. There is no clay left; instead, there are small pebbles and other types of components left on the table.
Which natural process is this modeling?
A. physical weathering
B. deposition
C. erosion
D. chemical weathering
the figure shows the great ocean conveyor belt. which best describes what this model represents?
A. The model shows how ocean currents change the salinity of water.
B. the model shows how ocean currents move heat energy around earth
C. the model shows how salinity of water affects its density
D. the model shows how the density of water differs between the north Atlantic and other parts of the ocean.
Answer:
d
Explanation:
The ocean conveyor belt shows the movement of the oceanic water and the salinity. The model represents the density of the water in different regions of the world. Thus, option d is correct.
What are ocean conveyor belts?Ocean conveyor belts are the oceanic current movement in their oceans across others and how the water moves across the water bodies across the globe.
The model shows that high salinity water gets heavy and sinks in the ocean of North Atlantic but the water of the Indian and the pacific oceans are less saline and remains at the surface.
Therefore, option D. the water differs in oceans based on density.
Learn more about ocean conveyor belts here:
https://brainly.com/question/3401456
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Choose all that apply for Grasslands
Select 3 correct answer(s)
Question 2 options:
Contains grasses and woody plants
occur in all climatic zones
rainfall is low
no trees and shrubs
Answer:
no tree shrubs rainfall is low contains grasses and woody plants correct me if I'm wrong
Answer:
B. occur in all climatic zones
C. rainfall is low
D. no trees and shrubs
Explanation:
A foil boat measures 4.0cm by 5.0cm and has a mass of 100.0g. If you put the boat in water, how far will it sink? (Recall the density of water is 1.0 g/mL) (answer with a number; units are cm)
Answer:
Let the volume of the block of wood be
V
c
m
3
and its density be
d
w
g
c
m
−
3
So the weight of the block
=
V
d
w
g
dyne, where g is the acceleration due to gravity
=
980
c
m
s
−
2
The block floats in liquid of density
0.8
g
c
m
−
3
with
1
4
t
h
of its volume submerged.So the upward buoyant force acting on the block is the weight of displaced liquid
=
1
4
V
×
0.8
×
g
dyne.
Hence by cindition of floatation
V
×
d
w
×
g
=
1
4
×
V
×
0.8
×
g
⇒
d
w
=
0.2
g
c
m
-3
,
Now let the density of oil be
d
o
g
c
m
-3
The block floats in oil with 60% of its volume submerged.So the buoyant force balancing the weight of the block is the weight of displaced oil =
60
%
×
V
×
d
o
×
g
dyne
Now applying the condition of floatation we get
60
%
×
V
×
d
o
×
g
=
V
×
d
w
×
g
⇒
60
100
×
V
×
d
o
×
g
=
V
×
0.2
×
g
⇒
d
o
=
0.2
×
10
6
=
1
3
=
0.33
g
c
m
−
3
Explanation:
Which statement best describes the relationship between the sun and moon during a spring tide?
The sun and the moon are aligned.
The sun and the moon are revolving around the Earth at the same speed.
The sun and the moon are at 45° angles to each other.
The sun and the moon are at 90° angles to each other.
Answer:
i think c
Explanation:
Can someone help with this?
--
I don't understand what to do for this part
Answer:
You would turn the decimals into a percent, then you would subtract that number from 100. Put that into decimal form.
For example, aluminum’s percent error would %10
Explanation: