Essential Question: How is the scientific method used to answer questions?

Answers

Answer 1
It helps you conduct experiments and use data to find conclusions. You develop a hypothesis and test it in various ways, and modify your hypothesis based on the outcome of your experiment.

Related Questions

Calculate the vapor pressure in torr of a solution containng 24.5 g of glycerin (C3H8O3) in 135 mL water at 30.0* C; the vapor pressure of water at this temperature is 31.8 torr. Assume that glycerin dissolves molecularly (does not dissociate).

Answers

Psolution = X · PH_20
= 0.966 · 31.8 torr
= 30.7 torr

K3PO4(aq)+MgCl2(aq)⟶

Answers

Answer:

6KCl(aq) +  Mg3(PO4)2(s)  ...  balanced equation

Explanation:

Can someone help? Thank you.

Answers

that' the answer i don't need an explanation

what is an adaptive organ of duck​

Answers

Answer:

The adaptive organ of duck is webbed feet.

Explanation:

Duck's webbed feet are designed like paddles to provide more surface area to help them swim.

the webbed feet

Explanation:

1. Before starting, make a prediction: If substances B and C are both in the gas phase and are at the same energy level, which of the two substances will need to have more energy transferred out in order to change to the liquid phase? Substance B or substance C? Explain your answer.

Answers

Answer:

Substance C

Explanation:

Substance C would be the answer because Substance C has a lower attraction level. Because of this, it takes more energy to take out of in order to become a liquid.

activation energy in reaction is used to:
A- Overcome repulsion force between colliding molecules
B- Breaking bonds
C- Merge Valence electrons
D- All of them ​

Answers

Answer:

D — All of them

Explanation:

The activation energy in a reaction is the minimum amount of energy required for a chemical reaction to take place. Since all the options are processes in a chemical reaction, D should be the answer.

Activation energy is Reaction is used to: Overcome repulsion force between colliding molecules, breaking bonds and Merge Valence electrons. So the obvious answer is D all of them

what is meaning of coordination bond?​

Answers

Answer:

Coordinate-bond meaning

A type of covalent bond in which both the shared electrons are contributed by one of the two atoms. ... The definition of a coordinate bond is a chemical bond between two atoms when one of the atoms shares a pair of electrons.

Explanation:

Explanation:

is a covalent bond in the sharing of electron pair equally between two atoms in which each atom contribute an electron.

it is form when atomic orbitals of atoms each containing an unpaired electron overlap to share the pair of electrons.

What equipment is generally used to make lyophilized medications suitable for administering to the patient? a) Test tubes or sterile ampules O b) Petri dishes and sterile droppers c) Sterile syringes or graduated cylinders d) Measuring cups and clean, warm water

Answers

C is the correct answer

How are all atoms of silver alike, but different from atoms of other elements?
A. All atoms of silver have the same mass.
B. All atoms of silver have the same atomic number,
C. All atoms of silver have the same number of neutrons.
D. All atoms of silver have the same number of subatomic particles.

Answers

B. All atoms of silver have the same atomic number but different numbers of neutrons in the nucleus.

A force of 450 N accelerates a box across a frictionless surface at a rate of 15 m/s2. What is the mass of the box?

30 kg
6,750 kg
6,750 N
30 N

Answers

Answer: Option A) 30 kg

MARK BRAINLEIST PLSS

Answer:

30kg

Explanation:

F=ma

Force=mass×acceleration

40=m×15

m=450/15

m=30kg

what is the mass number of an atom that has six protons. six electrons, and eight neutrons?

Answers

Mass number is the sum of the total number of nucleons (neutrons + protons) present in the atom.

Mass number = Protons + Neutrons

Mass number = 6 + 8

Mass number = 14

_______

Hope it helps ⚜

Which one of the following statements about balanced is true? A reaction is balanced by

Answers

Just helping the community

What is a scientific law?

Answers

Answer:

Scientific laws or laws of science are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. The term law has diverse usage in many cases across all fields of natural science.

Explanation:

I hope this helps

Answer:

Scientific laws or laws of science are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. Scientific law differs from scientific theory. The main difference between a law and a theory is that a theory tries to explain the reasoning behind something that occurs in nature, whereas scientific laws are just descriptive accounts of how something occurs in nature.

An earthquake's____
located directly above its_____

Answers

Answer:

An earthquake's what happens when two blocks of the earth suddenly slip past one another.

located directly above its The epic Center

Explanation:

Hope this helps you !!

Chose any ONE state of matter and explain the space of the particles.
Use a drawing to help explain.

Answers

Answer:

solid

intermolecular space is very closed to each other and tightly packed

is H2O polar or non polar?

Answers

Answer:

Explanation:

H2O is a polar molecule

Answer:

polar covalent molecule

Explanation:

the unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that water has two pole a positive and a negative.

LAST ATTEMPT! Covalent compound naming ! !!

Answers

Answer:

Name the non-metal furthest to the left on the periodic table by its elemental name.

Name the other non-metal by its elemental name and an -ide ending.

Use the prefixes mono-, di-, tri-.... to indicate the number of that element in the molecule.

im prolly wrong

What is the pressure exerted by a force of 15.0 N over an area of 0.00372 m^2 ?

Answers

Explanation:

Pressure = Force/Area

therefore,

P = 15/0.00372

= 4.03 X10^³N/m²

What you see as you look up at the night sky depends on the weather, the time of year, your location, and how dark your surroundings are. The
---
and stars are the celestial objects most people can see in the night sky.

Answers

the [moon] and stars are what most people see.

LAST ATTEMPT! Covalent compound naming !

Answers

S2Cl4- disulphur tetrachloride
C5Br8- Pentacarbon octachloride
Cl2O3- Dichlorine trioxide
H2S3- trisulfane
S3F4-
N6S3-
Si7O2-

S2Cl4 = Disulfur Tetrachloride

C5Br8 = N/A

Cl2O3 = Dichlorine trioxide

H2S3 = Trisulfane

Formula: N4S4 = Trisulfur Tetrafluoride

Formula: CBr4 = Hexanitrogen trisulfide

Formula: SiO2 = Heptasilicon

Carry learning!

Stay safe!

Study hard!

Ensure you write the states of the reactants and products.
• phosphoric acid reacts with magnesium hydroxide

Answers

H3PO4 (aq) + Mg(OH)2 (s) -> Mg3(PO4)2 (s) + H2O (l)

Complete the passage about ionic structures using words from the list

Answers

Answer:

see below

Explanation:

1- lattice

2- regular

3- positive

4- negative

5- alternate

6- strong

7- bonds

8- giant

How many ml of a 2.903 M NaOH solution are needed to produce 500.0 ml of a 0.3344M solution?

Answers

Answer:

About 57.60 mL.

Explanation:

We can utilize the dilution equation:

[tex]\displaystyle M_1V_1 = M_2V_2[/tex]

Where M are the molarities of the solutions and V are the volumes of the solutions.

We want to determine the volume of a 2.903 M NaOH solution to mix in order to produce 500.0 mL of a 0.3344 M solution.

Substitute and solve for V₁:

[tex]\displaystyle \begin{aligned} (2.903 \text{ M})V_1 & = (0.3344 \text{ M})(500.0 \text{ mL}) \\ \\ V_1 & = 57.60\text{ mL} \end{aligned}[/tex]

In conclusion, 57.60 mL of a 2.903 M NaOH solution is needed.

A 0.1 M NaCl solution and a 0.2 M glucose solution are separated by a membrane that is impermeable to these solutes but is permeable to water. What will happen

Answers

nothing will happen

if you calculate the water potiential for both solutions

you get 2(0.1)(R)(T) and 1(0.2)(R)(T)

which is the same thing, so its isotonic.

A team of scientists is working to find the boiling point of a liquid at very low pressure. After three trials, the team has an average
of 12.3°C. An additional trial gives a result of 13.1°C. Which statement is a reasonable conclusion that can be drawn from this
result? (1 point)

O The original average should be thrown out because it could not be confirmed by new results.
O More data should be collected because the first three trials appear to be wrong.
O The original average should be used because it came from three results, not just one.
O More data should be collected to get a more reliable average.

Answers

Since it is conventional in science to use an average not just a single result, the original average should be used because it came from three results, not just one.

The boiling point refers to the temperature when the pressure of the fluid equals the atmospheric pressure. Hence, boiling occurs at atmospheric pressure.

In scientific experiments, it is common to conduct experiments more than once and obtain an average value for the measurement. In this case, the original average should be used because it came from three results, not just one.

Learn more: https://brainly.com/question/6284546

Which one item of the list below does not describe part of beta decay?
A. The nucleus of the atom is unstable.
B. A neutron turns into a proton.
C. A proton turns into an electron.
D. An electron is ejected from the nucleus.

Answers

Answer:

C

Explanation:

When Beta decay happens, the atomic number of an element goes up, and that means there is an extra proton. A is not the answer because unstable atoms cause decay. B is also not correct because this is what happens in Beta decay: a neutron becomes a proton. D is not correct because an electron is actually emitted from the nucleus.

in a test trial, using 6% extra strength bleach at room temperature, 100.0 mL of oxygen gas was produced in 2.03 seconds. Calculate the average reaction rate for the oxygen gas.

Answers

The average reaction rate for oxygen gas is 49.26 mL/s

The average reaction rate of a substance refers to the speed at which a reaction occurs and therefore products are formed. In the reaction presented, oxygen gas is the product.

Moreover, the average reaction rate can be expressed in mL per second or mL/s, and the formula to calculate it is:

Product in mL/seconds

Let's calculate the reaction rate:

100 mL/ 2.03 s = 49.26 mL/s

Learn more about oxygen in: https://brainly.com/question/1506082

To balance a redox reaction, what must be done?

The ion charge on both sides of the equation must equal zero.

Water must be added to both sides of the equation.

The increase and decrease in oxidation numbers must be balanced.

H+ and OH− must be added to opposite sides of the equation.

Answers

To balance a redox reaction, the increase and decrease in oxidation numbers must be balanced.

A redox reaction also called an oxidation- reduction reaction is a chemical reaction in which there is simultaneous gain and loss of electrons.

The species that loses electrons gets oxidized while the species that gains electrons gets reduced. This results in a change of oxidation number. The species that gets reduced decreases in oxidation number and the species that gets oxidized increases in oxidation number.

So, to balance a redox reaction, the simultaneous gain and loss of electrons must be balanced.

Thus, to balance a redox reaction, the increase and decrease in oxidation numbers must be balanced.

Learn more about redox reaction here:

https://brainly.com/question/15339159

need help with this question, anybody ..
-20 points :)

Answers

i think that its D, i did this question before and thats what i got and it was right

A student is studying the boiling points of six different liquids and finds results with consistently higher boiling points than what research would suggest. Which option describes a likely cause?

Answers

Answer:

Large molecules tend to have greater boiling points because the London dispersion forces are stronger within.

Explanation:

Other Questions
A Carnot engine takes 2000 j of heat from a reservoir at 500 k, does some work and discards some heat to a reservoir at 350k . how much work does it do, how much heat is discarded, and what is it's efficiency? Complete the third step to solve the equation. 3 + 2x = -6x + 41. Isolate the variable term on one side: 3 + 8x = 42. Isolate the constant on the other side: 8x = 13. Solve for x: x = The black graph is the graph ofy = f(x). Choose the equation for thered graph.1a. y = f (2x)by = f (3)C. 2y = f(x)= x. d. = f(x)-Enter By showing your working clearly verify if x=19/20is the solution of the equation 2x-3/4=1/3x+5/6 need the answer asap TESTIMONY BEFORE THE SENATE HEARINGS ON THE EQUAL RIGHTS AMENDMENT How does the structural style of the text contribute to its persuasiveness? Evaluate223225Give your answer as a mixed number in its simplest form. In the beginning of the addiction cycle Please help this is due soon! Dates of the Ottoman Empire's beginning, height, decline, and end What does pindaho mean i cant find the translation but my classmates call me that Which detail from the passage best develops Delta's reaction to the sight ofDrake snooping around?Sure enough, Drake Johnson was up on the hillside, snooping aroundtheir claim. Delta's hands shook, and she was too afraid to take abreath. Did he know there was silver on this land? And would anyonebelieve that she had seen him trespassing? Delta would have to stayas still and quiet as possible until it was safe for her to hurry back totown.O A. hands shook, and she was too afraidO B. snooping around their claimO O OC. it was safe for her to hurry back to townO D. she had seen him trespassingSUBMIT Paul has thirteen coins in his piggy bank. Some of the coins are quarters, some are nickels, and he has a total of $3.55. Which system of equations can be used to determine how many quarters, x, and how many nickels, y, he has? A. x + y = 13 0.25x + 0.5y = 3.55 B. x + y = 13 0.25x + 0.05y = 3.55 C. x + y = 13 25x + 5y = 3.55 D. x + y = 3.55 0.25x + 0.05y = 13 Please help me give two pros and cons for Texas annexation and whats the best choice Subject 7th grade Texas history A national survey of middle schoolers ask,how many hours a day they spend doing their homework?which statement best represents the population? The rainfall recorded in a certain city is given below. Calculate the average rainfall. 2.54 cm, 1.75 cm, 3.05 cm, 5.00 cm, 3.72 cm and 4.34 cm.if you answer then i will mark you brainliest!!! Help me out pleasePopular Sovereignty is established in the Preamble of the Constitution. What does Popular Sovereignty mean? A) Federalism - sharing power between the people and the government. B) Federalism - sharing power between the state and national government. C) The constitution rules the people.D) The people give consent to be ruled. "Ako si Jia Li, Isang ABC"Ano-ano ang mga katangian ni Jia Li bilang isang ABC? Totoo nga kaya ang paniniwala nila ng kaibigan niyang si Lian na They have the best of both worlds? Ipaliwanag. Drag each label to the correct location on the image.The image below shows the process of DNA replication. Identify the components of the process. What is the metabolic process that breaks down organic molecules to release energy to be used by cells? A. cellular respiration B. light dependent cycle C. light independent cycle D. photosynthesis HEEEELLLPPPP PLLEEASSSEE!!! ASAP