Answer:
C- a method of testing an idea
Which pair of substances would most likely result in the production of a solid when reacting with a base?
Answer:
metal salts, and carbon dioxide
Explanation:
Did you title your lab report?
Did you state the purpose of the investigation?
Did you include a brief overview of the investigation?
Materials and Procedure
Did you make a list of materials? Did you include quantities and SI units?
Did you present the steps of the procedure as a numbered list?
Did you note any changes to the original procedure?
How many grams are there in 1.18 X 1026 atoms of iridium?
Why do more gas bubbles mean the gold is less pure
Answer:
Most likely it decreases the quality of the gold.
Explanation:
If 0.243 g of magnesium is reacted with hydrochloric acid, the amount of acid required would be:
Answer
0.496g
Explanation:
All you have to do in this problem is multiply .243 g by 2.04, which is the universal shortcut for these acid problems.
Nakeem and his team were playing basketball in the gym, and all the basketballs were firm and bounced well. When the team went outside,
the same basketballs seemed a bit flat and would not bounce well. Which statement provides the best explanation for what happened to the
basketballs?
O A The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls increased.
B. The temperature outside was warmer than the temperature in the gym, so the pressure of the air in the balls increased.
OC. The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased.
OD. The temperature outside was warmer than the temperature in the gym, so the pressure of the air in the balls decreased.
Answer:
c
Explanation: i took the test lol
The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased. Hence option C is correct.
What is pressure?Pressure is defined as the force exerted perpendicularly to an object's surface measured in units of the force's distribution. In comparison to the surrounding pressure, gauge pressure is the pressure. The concept of pressure is crucial to fluid mechanics and is used to characterize a gas's energy in the ideal gas law, among many other physical uses.
The pressure law states that for a constant volume of gas in a sealed container, the temperature of a gas is directly proportional to its pressure. This is easily understood by picturing how the gas particles in the container move more energetically as the temperature rises.
Thus, the temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased. Hence option C is correct.
To learn more about pressure, refer to the link below:
https://brainly.com/question/12971272
#SPJ2
1.04 x 10^-3 pm to mm
Answer:
1 pm = 10^-12 m = 10^-10 cm = 10^-9 mm
1.04 x 10^-3 pm = 1.04 x 10^-3 x 10^-9
= 1.04 x 10^-12 mm.
Hope it helps...
The process shown in the image above is known as
A. neutron absorption.
B. nuclear fusion.
C. a chain reaction.
D. a redox reaction.
Answer:
C. Chain Reaction
Explanation:
You get different elements from just one by a single reaction.
which group contains most elements
Answer:
group 8 (group 0)
just take a look at the periodic table
Describe the motion of molecules in each of the three states of matter.
Answer:
EASSSSSYYY give me a harder question smh
if you want you can give me Brainliest answer lol
Explanation:
A solid’s particles are packed closely together. The forces between the particles are strong enough that the particles cannot move freely.
A liquid is a fluid that conforms to the shape of its container but that retains a nearly constant volume independent of pressure. The volume is definite (does not change) if the temperature and pressure are constant.
Gas molecules have either very weak bonds or no bonds at all, so they can move freely and quickly. Because of this, not only will a gas conform to the shape of its container, it will also expand to completely fill the container.
i give brainliest help pls
The answer is a compound.
Hope this helps! :)
***20 pts***
If you had 3.02 grams of Sodium (Na), how many moles would that be?
ANSWER W STEPS IF NOT REPORTED
Answer:
0.131 mol
Explanation:
To convert grams to moles, you need to use the molar mass. The molar mass is the mass number. You can find this on the periodic table. The molar mass of sodium is 22.990 g/mol.
(3.02 g)/(22.990 g/mol) = 0.131 mol
Measure of the energy
released during an
earthquake.
Answer:
The magnitude of an earthquake, usually expressed by the Richter Scale, is a measure of the amplitude of the seismic waves
Explanation: The moment magnitude of an earthquake is a measure of the amount of energy released - an amount that can be estimated from seismograph readings
I will mark whoever gets it right most brainliest (25 point question)
What is the name of the ionic compound CaCN?
Hint: It's not Calcium Cyanamide
Answer: Calcium Cyanide?
Explanation:
1. How many protons?
2. What is the atomic number?
3. What element is this?
4. How many neutrons?
5. What is the mass number?
6. What is the isotope?
Answer:
1) 5 protons, 2) 5, 3) boron, 4) 6 Neutrons, 5) 10.811 ≈ 11, 6) Boron-9
The sphere was dropped into water in a graduated cylinder as shown below
Answer:65 ML
Explanation:
In the compound nickel(II) sulfide, there is always 58.7 g of nickel for every 32.1 g of sulfur. What is the simplified ratio of
nickel to sulfur?
answer: 1.83 to 1
or at least that’s what i got
P2O5 is a covalent compound used to purify sugar. How many atoms of phosphorus does this compound have? How many atoms of oxygen does this compound have?
Lol please help :')
Answer:Phosphorus: 2
Oxygen:5
Explanation:
Just did it
Answer:
Phosphorus: 2
Oxygen:5
Explanation:
how many significant figures in 1. 19.99 2. 140486 3. 0.0609 3. 5.08 ?
1. 4 significant numbers
2. 6 significant numbers
3. 3 significant numbers
4. 3 significant numbers
Further ExplanationSignificant numbers are numbers obtained from the measurement results of exact numbers and the last number estimated
1. 19.99
all non-zero numbers are significant numbers , so there are 4 significant numbers
2. 140486
a zero which is located between two non-zero numbers including a significant number , so there are 6 significant numbers
3. 0.0609
a zero in front of a decimal point is not a significant number, so there are 3 significant numbers (6,0 and 9)
4. 5.08
Any zeros between two non-zero numbers are significant, so there are 3 significant numbers(5,0 and 8)
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An atom, which is an isotope of an element, is characterized by -
O having more electrons in its nucleus.
O having more neutrons in its nucleus.
having fewer protons in its nucleus.
having more protons in its nucleus.
Answer:
gime fre points
Explanation:
fre points for me!
Fill in the blank.the amount which an object accelerates depends on the mass of the object on the size of the ____ acting upon it
I need help I’m struggling
Answer: Force
Explanation:
Answer:
force
Explanation:
PLEASE HELP ME FAST THANKYOU! :)
What is a substance said to be if it evaporates easily?
A.crystallized
B.condensing
C.changing pigmentation
D.volatile
PLS HELP:)Which situation will cause a stationary object to start moving?
A. A net force greater than 0
B. Balanced forces
C. A net force equal to 0
D. Two forces that cancel each other out
Fe(s) + O2(g) Fe3O2 (s)
Answer:
Fe2O3
Explanation:
if we have to answer whether it is wrong or correct then it is wrong because the correct answer would be Fe (s) + O2 (g) = Fe2O3 (s) because the valences will be exchanged
Which of the following can be inferred from the diagram above that shows the dependence of potential Energy on the Internuclear distance between two atoms?
A - The atoms form a bond with a bond length of 25 pm
B - The atoms form a bond with a bond length of 75 pm
с - The net force between the atoms is attractive at 25 pm
D - The net force between the atoms is attractive at 75 pm
Answer:
B - The atoms form a bond with a bond length of 75 pm
From the potential energy diagram of shown, we can infer that the atoms form a bond with a bond length of 75 pm.
When atoms are far away from each other, there exists no interaction whatsoever between the atoms.
However, as the atoms draw closer to each other, the potential energy diagram begins to shift towards an energy minima as we can see from the potential energy diagram.
As the system continues to tend towards this minima, the distance between the atoms decreases. The distance at which the two atoms have the lowest energy is called the bond length.
For this system, such a bond length occurs at 75pm as we can see from the diagram.
Learn more: https://brainly.com/question/24275269
how many atoms are in 4 Mg(OH)2 ?
Answer:
20 atoms
broo this is easy plz give me harder questions smh
Based on your knowledge of chemical equations, what do you know for sure
about this equation?
Pls help I need it I’m dumb but I do need it! *here a pic*
How would you calculate the gravitational potential energy of a 2 kg bottle of soda falling off of a kitchen table that is 0.76 m tall ?
Answer:
14.9 Joules .
Explanation:
P. E. = m g h
= 2 * 9.8 * 0.76
= 14.9 Joules to the nearest tenth.
Answer:
2*0.76*97
Explanation:
Jack, an Investigator, wants to prove that a certain suspect was present at the crime scene when the crime was committed. What kind of
evidence should he look for?
Jack should look for __________ evidence because the analysis of such evidence can prove whether the person was present when the crime
was being committed. This evidence refers to tiny fragments of material that can be transferred from a human to a human or human to a
location
(forensic science question)
Answer: TRACE evidence
Explanation: Any evidence that can be transferred from one person to another or one person to a place is trace evidence. Also I took the test.
Im literally failing some classes can some one help me with them
Answer:in can
Explanation:
Answer:
What are your subjects you need help with?
