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Calculate the average rate of change for the graphed sequence from n = 1 to n = 3. graphed sequence showing point 1, 2, point 2, 4, point 3, 8, point 4, 16, point 5, 32, and point 6, 64
A. 1
B. 2
C. 3
D. 6
Answers
Answer:it b
Explanation:
I've done that before
Answer:
The Answer is C or 3
Explanation:
I took the test
Related Questions
Using the phase diagram for H2O what phase is water in at 1 atm pressure and 50oC? A. It is in the solid phase B. It is at its melting point C. It is in the liquid phase D.It is in the gas phase
Answers
Answer:
C. It is in the liquid form.
Explanation:
1 atm is the normal pressure, so the question is really just what is H2O at 50C. The answer to that is liquid.
Also, I don't know why someone deleted my answer. My answer was correct and had a correct solution.
By examining the phase diagram of water it is clear that, at 1 atm pressure and 50 degree Celsius temperature, water exists at liquid state.
What is phase diagram?Phase diagram of a substance graphically represents the state of the substance at different temperature and pressures. Phase diagram helps to understand the point at which the three state of matter coexists and that point is called triple point.
Various physical properties can be determined using the phase diagram of a substance. Melting point, boiling point, freezing point etc. can be identified for the substance from its phase diagram.
Phase diagram of water represents the three states of water that are gas, liquid water and ice. Water freeze at 0°C and boils at 100 °C . at 1 atm pressure and 50 degree Celsius, water exists in liquid state.
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When designing an engineering solution, certain criteria and constraints must be considered. Criteria are the features of the design that must be kept in mind while solving the problem. A criterion answers the question, What do you want the design to do? A constraint is something that prevents the design from performing at its best. These constraints can include time, resources, and money.
When designing the airbag, what are some criteria you might consider and what constraints would you anticipate in its implementation?
Create a list of at least two criteria and at least three constraints that you must consider in the design. Rank them in order of importance, with the most important ones at the top of the list.
Answers
Answer:
The criteria listed in order of importance are;
1) To be inflated in the event of a collision in order to protect the occupants of the front of the vehicle
2) To be able to withstand the load of the breaking force of the occupants in the front seat of the vehicle during a collision
3) To be relatively tough so as to resist being torn on impact with a sharp object
The constraints listed in order of importance are;
1) How is the model design able to sense a collision that requires the airbag to be inflated
2) The uncertainty of the load the airbag will withstand upon collision
3) The possible hazard that could be caused by the gas used to inflate the airbag
4) The usage/interaction tendency between the vehicle occupant and the airbag system
Explanation:
In order to produce an effective design, it is important to be able to foresee the possible deficiencies of an idea so as to be able to mitigate the problems before an actual incident happens.
The criteria that should be considered include:
To be inflated in the event of a collision.Ability to withstand the load of the braking force of the occupants.Durability.It should be noted that when designing an engineering solution, there are some criteria and constraints that must be considered in order to achieve the objective of the engineering solution.
Some of the criteria that should be considered include the fact that it should be inflated in the event of a collision, the ability to withstand the impact of the braking force of the occupants, durability, etc.
The constraints listed include how the model design is able to sense a collision that requires the airbag. The possible hazards that can be caused by the gas. Also, it's vital to consider the interaction tendency between the airbag and the occupants of the vehicle.
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For neon, determine the moles and mass contained in a 29.9−L volume at a pressure of 481.1 torr at a temperature of 300.0 K.
Answers
Answer:
.7689 mol
15.516 g
Explanation:
Use the Ideal Gas Law, PV = nRT.
Make sure to use the correct ideal gas constant R. You can either put R in torr, or you can change the pressure to atm. I've just used the torr ideal gas constant.
481.1 torr * 29.9 L = n 62.364 LTorr/molK * 300 K
14384.89 = 18709.2n
n = .7689 mol
The molar mass of neon (remember that neon gas = Ne, it's not diatomic) is 20.18 g/mol from the periodic table.
.7689 mol * 20.18 g/mol = 15.516 g
Label the following ph paper color as either strong / weak acid, strong/weak base, or neutral
Answers
1. neutral
2.strong base
3.weak acid
4.strong acid
5.weak base
Q24. List all of the ways you can force the reaction to shift to the product 5 points
side. (There are 5 ways total)
Answers
Answer:
1) Increase temperature
2) Decrease temperature
3) Increase concentration of reactants
4) Increase pressure
5) Decrease pressure
Explanation:
Le Chatelier's Principle Fundamentals states that a chemical reaction at equilibrium that undergoes changes to pressure, temperature, or concentration, this will cause the equilibrium to shift in the opposite direction to offset the change.
1) Increase temperature
2) Decrease temperature
3) Increase concentration of reactants
4) Increase pressure
5) Decrease pressure
What determines the average kinetic energy of the particles in a gas?
A.
the number of collisions
B.
the number of particles
OC.
the size of the particles
D.
the temperature
Answers
Answer:
D
The temperature.
Explanation:
do rainforests have hot summers and cold winters?
Answers
Answer:
No, rainforests have long wet winters and short dry summers.
I'll give brainliest
In going through the three physical states of matter, water would normally undergo changes in
A) composition.
B) density.
C) mass.
D) weight.
Answers
Answer:
COMPOSITION
Explanation:
Brainliest plz
How many hours will it take for only 1.5625 mg to remain
Answers
Answer:
36 hours
Explanation:
Notice that you are given the actual table of how the isotope reduces , and it shows that for each period of 6 hours the isotope decays to half of the initial number.
EVery 6 hours, the reduction in number of mg of the isotope goes down in half'
100 mg, then 50 mg, then 25 mg, then 12.5 mg, then 6.25 mg, then 3.125 mg and finally (reaching 1.5625 mg
That was 6 periods of 6 hours each, which totals: 6 time 6 hours = 36 hours
You want to test the effect of water temperature on the rate of sugar
dissolution. Which of the following is an example of a controlled experiment
to test this?
A. The temperatures of five beakers of 250 mL of water are kept
constant, and 10 g of sugar is added to each beaker.
B. The temperatures of five beakers of 250 mL of water are varied,
and 10 g of sugar is added to each beaker.
C. The temperatures of five beakers of 250 mL of water are varied,
and 10 g of sugar is added to each beaker while three of the
beakers are stirred.
D. The temperatures of five beakers of 250 mL of water are varied,
and different amounts of sugar are added to each beaker.
Answers
Answer:B
Explanation:
You want different temperatures for each beaker but everything else the same
The compound diborane can be used as a rocket propellant. What is the percent composition of boron in diborane (B2H6)? A. 22% B. 25% C. 39% D. 75% E. 78%
Answers
Answer: E. 78%
Explanation:
Diborane (B2H6), a chemical compound made up of approximately 78% Boron and 22% Hydrogen.
Answer:
E
Explanation:
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_________ is a jellylike substance within cells.
Answers
Answer:
Cytoplasm
Explanation:
Cytoplasm is a jellylike substance within cells.
Answer: he is right
Explanation:
How are electrons and positrons the same, and how are they different?
Answers
Answer:
A positron is the antimatter counterpart of an electron (also called anti-electron). ... The spin, a type of angular momentum carried by the electron and positron, is the same for both. However, the electron and positron have the opposite charge. The electron has a negative charge, and the positron has positive charge.
Calculating pH
DETERMINE THE PH OF EACH SOLUTION
» [H] = 1 x 10-9M
pH =
» POH = 3
pH =
» [OH ) = 1 x 10-2 M
pH =
» POH = 7
pH =
Answers
Answer:
The answer to your question is given below
Explanation:
1. Data obtained from the question include:
Hydrogen ion concentration, [H+] = 1x10^-9M
pH =..?
pH = - log [H+]
pH = - log 1x10^-9
pH = 9
2. Data obtained from the question include:
pOH = 3
pH =.?
Recall:
pH + pOH = 14
pH + 3 = 14
Collect like terms
pH = 14 - 3
pH = 11
3. Data obtained from the question include:
Hydroxide ion concentration, [OH-] = 1x10^-2M
pH =..?
First, we shall determine the pOH. This is illustrated below
pOH = - Log [OH-]
pOH = - Log 1x10^-2
pOH = 2
Finally, we can obtain the pH as follow:
pH + pOH = 14
pOH = 2
pH + 2 = 14
Collect like terms
pH = 14 - 2
pH = 12
4. Data obtained from the question include:
pOH = 7
pH =.?
Recall:
pH + pOH = 14
pH + 7 = 14
Collect like terms
pH = 14 - 7
pH = 7
Pls help I’m dying plssssssdsssss
Answers
Answer:
number 3
Explanation:
please help me!!!!!!!! if the temperature of your ice is 32 percent Fahrenheit and your water is 68 Fahrenheit and you mixed the ice and the water together what temperature is your water?
Answers
Answer:
36 degrees farenheit
A molecule is what ?
Answers
Answer:
Explanation:
A group of atoms bonded together and the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. They are made up of atoms that are held together by chemical bonds. These bonds exchange electrons among atoms.
A molecule is just a group of two or more atoms bunched together.
Neutrons are in the nucleus of the atom. A neutron has
a) A positive charge
b) No charge
c) A negative charge
d) Twice as much positive charge as a proton
Answers
Answer: B. (No charge)
Explanation:
Protons have a positive charge, electrons have a negative charge.
Neutrons are neutral and therefore have no change.
Which is the best summary of the kinetic theory?
A. Potential energy is converted to kinetic energy.
O B. Atomic motion is constant at all temperatures.
C. Atoms and molecules are always in motion.
O D. Energy cannot be created or destroyed.
SUBMI
Answers
Answer:
C. Atoms and molecules are always in motion.
.
Showing a correct numerical setup, determine the percent composition by mass of carbon in baking soda (gram-formula mass - 84 grams per mole).
Answers
Answer:
Percentage Mass carbon = 14.3%
Explanation:
Baking soda which is sodium hydrogen bicarbonate has the molecular fomula, NaHCO3.
Atomic masses of each of the component atoms is, Na = 23; H = 1; C = 12; O = 16
Step 1: Molar mass of NaHCO3 = 23 + 1 + 12 + 3*16 = 84 g/mol
Step 2: Percentage mass of Carbon = (atomic mass of Carbon / molar mass of NaHCO3) * 100%
= (12 / 84) *100%
Percentage Mass of carbon = 14.3%
What is one way in which chemistry affects your everyday life?
A. Refrigerators use energy more efficiently than they did 10 years
ago.
B. Tap water is safe to drink because it is monitored for harmful
substances.
c. Weather forecasts are now more accurate because of radar.
D. Watches are now more accurate because they are digitalized.
Answers
Answer: B
Explanation: Water is filtered with a bunch of chemicals which makes it drinkable.
What are substances on the right side of a chemical equation
called?
a. reactants
b. groups
C. products
d. electrons
Answers
Answer:
The substances on the right side of a chemical equation are the products as reactions typically move from left to right.
A chemical equation is a representation of chemical reaction in the form of symbols and formulae where the reactants are on left side and the products on right side.
Eg. CaCO3(s)→CaO(s)+CO2(g
What is chemical equation?Chemical equation is written "with the reactants on the left side of an arrow and the products of the chemical reaction on the right".
What is a reactant?Reactants are "the starting materials in a chemical reaction".
What is a product?
A product is "a chemical species resulting from a chemical reaction".
Hence, the substances on the right side of a chemical equation are products.
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Neutralization Reactions
PREDICT THE PRODUCTS OF THE FOLLOWING REACTIONS
+
HNO3+ Ba(OH)2
+
H3PO4 + Ca(OH)2
→
Answers
Answer:
2HNO3+ Ba(OH)2 = Ba(NO3)2 + 2H2O
H3PO4 + Ca(OH)2 = Ca3(PO4)2 + 6H2O
Explanation:
2HNO3+ Ba(OH)2 = Ba(NO3)2 + 2H2O
H3PO4 + Ca(OH)2 = Ca3(PO4)2 + 6H2O
H+
O2-
OH-
Ba2+
Ca2+
NO3-
P 5+, 3+, 3-
H2O
The topmost layer of the Earth is made up of large pieces that fit together like a puzzle. However, these pieces don't stay still, and sometimes they rub against each other. When these large sections of the Earth’s crust, called tectonic plates, hit each other, they send vibrations through the surface of the Earth. These vibrations are seismic waves. Seismic waves are just like the ripples in a pond. But instead of traveling through water, they travel through the Earth. When they reach the Earth's surface, they make the ground shake. That's an earthquake.
Earthquakes are the result of?
A ripples traveling through water.
B Earth’s topmost layer sinking.
C vibrations from seismic waves.
D tectonic plates staying still.
Answers
Answer:
C- vibrations from seismic waves
Answer:
C vibrations from seismic waves.
Explanation:
The shifting rock in an earthquake causes vibrations called seismic waves.
Which equation represents neutralization?
6Li(s) + N2(g) → 2Li3N(S)
2Mg(s) + O2(g) → 2MgO(S)
2KOH(aq) + H2SO4(aq) → K2SO4(aq) + 2H2O(l)
Pb(NO3)2(aq) + K2CrO4(aq) → 2KNO3(aq) PbCrO4(s)
Answers
Answer:
2KOH(aq) + H2SO4(aq) → K2SO4(aq) + 2H2O(l)
Explanation:
A neutralization reaction refers to any reaction between an acid and a base to form salt and water only. In a neutralization reaction, the key reaction that takes place to produce water is shown ionically below;
H^+(aq) +OH^-(aq) ----> H2O(l)
Looking at all the options provided, our gaze will have to settle on the reaction;
2KOH(aq) + H2SO4(aq) → K2SO4(aq) + 2H2O(l)
We can clearly see that there is an acid that reacts with a base to form a salt and water. The base contains the OH^- ion while the acid contains the hydrogen ion.
This is the only reaction of this sort among the options hence it is the correct answer.
2 The precipitate formed when sodium hydroxide reacts with solutions
containing metal ions is the corresponding METAL HYDROXIDE.
a Write word equations and symbol equations including state symbols)
to show how the following solutions react with sodium hydroxide:
magnesium sulfate, MgSO4
ii iron(II) sulfate, FeSO4
ili iron(III) chloride, FeCl3
iv copper(ll) chloride, CuCl2
Answers
Answer:
Explanation:
MgSO4 + 2NaOH -------> Mg(OH)2 + 2NaSO4
CuCl2 +2NaOH -------> Cu (OH)2 + 2Nacl
FeCl3 + 3NaOH ----> Fe(OH)3 + 3NaCl
based on this can you try for the FeSO4. similar to first reaction showed above
The picture represents _________________.
A . Compounds
B . Mixture of Elements and Compounds
C. Mixture of Elements
D. Elements
E. Mixture of Compounds
Answers
Which ion below is present in greatest concentration in a basic (alkaline) solution
Answers
Answer:
hydroxide ion / OH-
Explanation:
Basic solutions have a greater concentration of hydroxide ions than hydrogen (H+) ions
What is the oxidation number of Si
Answers
Answer:
0
Explanation:
Arrange the following rock particles which occur in soil in the decreasing order of their sizes:
Sand, Clay, Gravel, Silt.Immersive Reader
(1 Point)
Clay>Silt>Sand>Gravel
Silt>Clay>Sand>Gravel
Gravel >Sand>Silt>Clay
Answers
Answer:
Gravel >Sand>Silt>Clay
Explanation:
Sand, Clay, Gravel and Silt
Clay: all particles smaller than 0.002 mm
Silt: all particles within the size range of 0.002-0.05 mm;
Sand: all particles within the size range of (2.0 mm - 0.05 mm)
Gravel particles are larger than sand, ranging in size from 4.75 mm to 75 mm
Going through the options, the correct option is;
Gravel >Sand>Silt>Clay