All categories

4 years ago

PLEASE HELP 1ST ONE GETS BRAINLY AND ALSO THE QUESTION IS, WHAT DOES THIS PICTURE SHOW????

Chemistry

2 answers:

GREYUIT [131]4 years ago

6 0

Answer:

It shows the gravitational pull from the earth to the moon

Explanation:

Hope this helps :))

KengaRu [80]4 years ago

3 0

Answer: sup folks my name is breanna and here is your answer

Students will understand that as the distance of objects increase the force of attraction is weaker. Students will understand that as the mass of the object increase the force of attraction is greater. Students will be able to explain that the force of gravity causes the planets to move in their elliptical orbits.

Explanation:

i hope i helped

You might be interested in

Which of the following measurements has one significant figure?

Phantasy [73]

100 G
YO ABLO ESPANOL TAMBIEN

3 0

3 years ago

A newly discovered element, Z, has two naturally occurring isotopes. 90.3 percent of the sample is an isotope with a mass of 267

blsea [12.9K]

atomic mass=percentage of isotope a * mass of isotope a + percentage of isotope b * mass of isotope b+...+percentage of isotope n * mass of isotope n.

Data:
mass of isotope₁=267.8 u
percentage of isotope₁=90.3%

mass of isotope₂=270.9 u
percentage of isotope₂=9.7%

Therefore:

atomic mass=(0.903)(267.8 u)+(0.097)(270.9 u)=
=241.8234 u + 26.2773 u≈268.1 u

Answer: the mass atomic of this element would be 268.1 u

7 0

3 years ago

At a certain temperature, the K p Kp for the decomposition of H 2 S H2S is 0.746 0.746 . H 2 S ( g ) − ⇀ ↽ − H 2 ( g ) + S ( g )

Ivanshal [37]

Answer: The total pressure of container at equilibrium is 0.431 bar

Explanation:

We are given:

Pressure of hydrogen sulfide = 0.240 bar

The given chemical equation follows:

$H_2S(g)\rightleftharpoons H_2(g)+S(g)$

Initial: 0.240

At eqllm: 0.240-x x x

The expression of $K_p$ for above equation follows:

$K_p=\frac{p_{H_2}\times p_S}{p_{H_2S}}$

We are given:

$K_p=0.746$

Putting values in above expression, we get:

$0.746=\frac{x\times x}{0.240-x}\\\\x=0.191,-0.940$

Neglecting the negative value of 'x' because pressure cannot be negative.

So, the equilibrium pressure of hydrogen gas = x = 0.191 bar

The equilibrium pressure of sulfur gas = x = 0.191 bar

The equilibrium pressure of hydrogen sulfide gas = (0.240 - x) = (0.240 - 0.191) = 0.049 bar

Total pressure of the container at equilibrium = $p_{H_2}+p_{S}+p_{H_2S}$

Total pressure of the container at equilibrium = 0.191 + 0.191 + 0.049 = 0.431 bar

Hence, the total pressure of container at equilibrium is 0.431 bar

6 0

4 years ago

The density of water is 1.00 g/mL. Which substance below can float on water?

evablogger [386]

Answer:

ice, air, ducks and fabric

Explanation:

its common sense

4 0

3 years ago

Which of the following is least likely to dissolve in the polar solvent water?

s2008m [1.1K]

Like dissolves like and unlike repels like. This applies to the polarity of the solutions. Polar dissolves polar and non-polar does not mix with polar solutions. In this case, the polar substance that can mix with water. Sugar and salt can be dissolved through agitation. Oil which is nonpolar is immiscible in water. Hence answer is D.

6 0

3 years ago