what is the 3rd element on the periodic table?
Answer:
Lithium
Explanation:
The 3rd (third) element on the periodic table is Lithium. Lithium is a soft, silvery, light alkali metal denoted with the symbol Li.
What is the empirical formula for CH2OHCH2OH?
Calculate the value of K at 700 K for the
reaction
H2(g) + I2(g) → 2 HI(g)
if Kc = 54 at the same temperature.
Answer:
It going to be 54
Explanation:
I got it right but I would say it's because the temperature stays the same. So the K value stays the same.
A student wants to test how plants grow in different
colors of light. Thinking about this experiment, what
are some of examples of each of the following? List at
least two in each.
DATA
VARIABLES
CONTROLS
Answer:
What is the question? I don't see it.
What is the concentration of the following:
2.0mol of zinc sulphate in 10 dm^3 of solution
Answer:
Concentration is measured in moles per cubic decimetre: mol dm–3. To find the concentration of a solution, divide the number of moles by the volume in dm3. If the volume is in cm3, divide the volume by 1000 first to convert it into dm3.
Explanation:
Given 0.38 grams of N2, how many grams of NaN3 are needed
Fill in the blank to complete each statement
The land that supplies water to a river system is called a
Pollution from a single, identifiable source is called
Pollution that is difficult to link to a particular origin is called
source pollution
source pollution.
Answer:
1- Watershed
2- Point
3- Nonpoint
Explanation:
Just did it
Answer:
1. watershed
2. point
3. nonpoint
Explanation:
June 1
June 8
June 11
5. What phase of the moon most likely will appear 28 days after phase C?
A Waning Gibbous
June 15
B
Waning Crescent
с
Waxing Crescent
D
Waxing Gibbous
Answer:
D
Explanation:
it's D because it goes waxing crescent to waxing gibbous
Describe the Principle of Continuity of State
If any liquid is flowing in a pipe of cross-section area, then rate of flow of liquid across any cross-section remains constant.
Principle of Continuity of StateAccording to the equation of continuity states that if any liquid is flowing in streamline flow in a pipe of non-uniform cross-section area, then rate of flow of liquid across any cross-section remains constant. In the Principle of Continuity of State, Av = constant.
Where A refers to cross-sectional area and v is the velocity in which the fluid flows. It means
Learn more about continuity here: https://brainly.com/question/24637240
Someone can help me please??
Water (2470 g ) is heated until it just begins to boil. If the water absorbs 5.47x105 J of heat in the process,
what was the initial temperature of the water?
Express your answer with the appropriate units.
Answer:
47.01 °C
Explanation:
Q = mcΔt
Mass of water = 2470g
c or specific heat capacity of water = 4.18 J °C g
Q = 5.47 x 10⁵ J, which is expanded 547,000 J
No idea what Δt is, but we do know the water began to boil, and we know that water's boiling point is 100°C, so the final temperature had to be 100°C.
547,000 J = (2470) x (4.18) x (Δt)
Rearrange equation for Δt
(547,000) / (2470 x 4.18) = Δt
Δt = 52.98°C
But we're not done. We're trying to find the INITIAL TEMPERATURE of the water, not the TEMPERATURE CHANGE. We already have the final temperature, which is 100°C, and now we have how much the initial temperature rose by to get to 100°C.
All that we have to do now is 100 - 52.98 = 47.02°C
The initial temperature of the water is 47.02°C