Answer:My guess is the gravitational force between the objects or substances.
*CHEMISTRY*
*WILL GIVE BRAINEST*
A 5-liter sample of gas initially at 50°C is observed to expand to 5.5 liters when the temperature is raised to 100°C. After further increase in temperature, the volume is 6 liters. What is the approximate temperature (within 50 degrees) of the final state of the gas?
O 50°C
O 100°C
O 150°C
O 200°C
Answer:
150
Explanation:
.5 liter increase every temperature 50°C.
5 liter= 50 C
5.5 liter= 100 C
6 liter= 150 C
100 POINTS!!
Solid aluminum, Al(s), is dropped into hydrochloric acid, HCl(aq). The masses of the substances are listed below.
Mass of Al = 700g
Mass of HCl = 3000g
1. Write a balanced equation for the reaction.
2. Identify the limiting reactant and theoretical yield. Show your work.
3. A given trial of this reaction produced 3262g of AlCl3. What is the percent yield of the reaction. Show your work.
Answer:
Isnt it only 50 points??????????????????
Roller coaster cars move slowly at the top of the hill, so they have little kinetic energy. The speed of the cars increases as they move down the hill. This increased the cars' kinetic energy. Where might this extra kinetic energy have come from?
a.) kinetic energy was added by pushing the cars
b.) potential energy was transformed into kinetic energy
c.) the cars always had kinetic energy
d.) kinetic energy was transferred into potential energy
Answer:
b.) potential energy was transformed into kinetic energy
Explanation:
According to the law of conservation of energy, energy is neither created nor destroyed but transformed from one form to another in a system.
So, in this system, energy is not created neither is it destroyed.
The increase in kinetic energy of the car is due to the conversion of potential energy to kinetic energy. Potential energy is due to the position of a body. As the car winds down the hill slope, the potential energy is transformed to kinetic energy. Also, the velocity of the body increases.Help me with this please don’t scam me
Answer:
A is the answer it is correct
Answer:
A
Explanation:
trust me
Need help with pt 3 of Density worksheet
formula p=m/V
Explanation:
0.79
6.35
1.79
To find the density you have to divide the mass by volume
hope it helps!
The pattern of atoms and molecules give matter it’s ______
What is the blank?
Answer: Try mass that’s the best guess I can give off the top of my head
Explanation: An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms come together which forms molecules. These molecules interact to form solids, gases, or liquids.
Which of the following statements about the elements in group 2 of the periodic table is true?
They all tend to become positive ions when they bond with other elements.
They all have similar chemical and physical properties.
They all have two electrons in their outermost shell.
They are all metals.
Answer:
they all have two electrons in their outermost shell
The elements of group 2 are alkaline earth metals that have two electrons in their outermost shell. So they have similar chemical and physical properties and tend to become positive ions in bond formation.
What are the properties of the elements of group 2?The elements present in group 2 include Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium.
The elements of group 2 are similar in their physical and chemical properties as all the elements have the same number of valence electrons. All alkaline earth metals are silvery-white-colored solids under normal conditions. They are also shiny and quite reactive.
The general electronic configuration of group 2 elements is ns². The alkaline earth metals have fully filled s-orbital in their valence shells, they tend to lose two electrons to produce cations with +2 charge.
Therefore, the elements of group 2 are electropositive in nature. Therefore, all the given statements about group 2 of the periodic table are true.
Learn more about elements of group 2, here:
https://brainly.com/question/20455446
#SPJ2
Cu2+ br1- ionic formula
Answer:
yes
Explanation:
In an experiment to find the concentration of calcium hydroxide in limewater , 25.0 cm3 of limewater needed 18.8 cm3 of 0.0400 mol/dm3 hydrochloric acid to neutralise it.
Answer:
0.01504 mol/dm3
Explanation:
Calcium Hydroxide - Ca(OH)2
Hydrochloric acid - HCl
The reaction between both is given as;
2HCl + Ca(OH)2 --> CaCl2 + 2H2O
2 : 1
The relationship between the concentration and volume is given as;
CaVa / CbVb = na / nb
where a = acid (HCl) and b = base Ca(OH)2
Inserting the values;
0.04 * 18.8 / (Cb * 25) = 2 / 1
0.752 / 25Cb = 2
Cb = 0.752 / 50 = 0.01504
Help please Where does your water come from? Your tap or a bottle is not a valid answer.
where the water is actually collected, where it comes from originally, and how it actually gets
delivered to our houses in Southern California
Answer:
-water is collected from nearby water holes and put in a water tower after it's clean
Answer:
Your water comes from rivers and streams.
Explanation:
The water is collected from rivers and stream and gets delivered from the storage tank to the pipes of our house
Predict which moon phase will occur about one week after a full moon?
Answer:
waning gibbous I belive
Explanation:
Answer:
third quarter moon
Explanation:
Determine the number of atoms of 25 g iron(II) chloride
Answer:
3.56x10²³ atoms
Explanation:
To solve this question we need first to determine the moles of iron (II) chloride, FeCl₂, using its molar mass. Then, using Avogadro's number we can solve for the number of atoms:
Moles FeCl₂ - Molar mass: 126.751g/mol-
25g FeCl₂ * (1mol / 126.751g) = 0.1972 moles
Number of atoms:
1 mole of FeCl₂ are 6.022x10²³ molecules of FeCl₂, that means 0.1972moles are:
0.1972mol * (6.022x10²³ molecules / 1mol) = 1.188x10²³ molecules of FeCl₂
In 1 molecule of FeCl₂ there are 3 atoms (1 of Fe and 2 of Cl), in 1.188x10²³ molecules of FeCl₂ there are:
1.188x10²³ molecules of FeCl₂ * (3atoms / molecule) =
3.56x10²³ atomsJJ thomson experiment the atomic theory?
What kind of reaction is this?
Answer:
Single replacement
Explanation:
Chemical equation:
2Al(NO₃)₃ + 3Ca → 3Ca(NO₃)₂ + 2Al
Single replacement:
It is the reaction in which one elements replace the other element in compound.
AB + C → AC + B
All other options are incorrect because,
Double replacement:
It is the reaction in which two compound exchange their ions and form new compounds.
AB + CD → AD +CB
Synthesis reaction:
It is the reaction in which two or more simple substance react to give one or more complex product.
Decomposition reaction:
It is the reaction in which one reactant is break down into two or more product.
AB → A + B
Combustion reaction:
Reaction in substance react with oxygen and form carbon dioxide and water.
explain
diffusion in solids
have a great day
Answer: Well,diffusion does not happen in solids because the particles are not free to move around and so they cannot inter-mix.
Scientists now understand that light behaves as
a
a. particle only
b. neither a particle nor a wave
c. both a particle and a wave
d. a wave only
Answer:
C. both particle and a wave
Answer: C. Both a Particle and a Wave
Explanation:
Light can travel as particles or like waves. We can see it traveling like particles when a firefly glows. That is still a version of light. It travels as a wave when you turn on your light, faster than sound can. These are the two versions of light, particle and wave. The answer is C. Both a Particle and a Wave
as the depth of the ocean increases the amount of sunlight and water temperature will..
Answer:
Decrease
Explanation:
The lower you go, the colder because the sun can't reach lower levels of the ocean.
Answer:
decrease
Explanation:
less sunlight will be able to reach the farther down you go and the less sunlight there is the colder it gets
Which is not an indicator for a chemical change?
A. Dissolving sugar
B. Unexpected temperature change
C. Unexpected color change
D. Combustion
Answer:
A
Explanation:
Because it does not change entirely.
Which is the soft stone??
Answer:
Various soft stones were employed, the most popular being lime- stone basalt.
Explanation:
please help again I'm timed again
Answer:
melting evaporation
Explanation:
melting decreases because its melting out of form
Answer:the answer should be A E and F
Explanation:
They all use decreased energy
A mixture of hydrogen and oxygen gases has a total pressure of 5.50 atm. What is the partial pressure of the hydrogen if the P(O2) = 1250 mm Hg?
Answer:
P O 2 = 5.21 atm P C O 2 = 4.79 atm
Explanation:
Hope it helps!