Answers
40) 1.09 cm
41) 2.79 m
42) 29.74 g/mL
43) a. 6.730 x 10^-4
b. 5.0 x 10^4
c. 3.010 x 10^-6
44) a. 7050 g
b. 40000500 mg
c. 23500 mL
Related Questions
19. When you cut an apple in half. What type of change has occurred?
A.
Ichemical
C.
temporary
B.
physica
D.
reactive
Answers
Answer:
Physical
Explanation:
Nothing has chemically happened and the change is permenant therefore it is physical
1. Which of the following is neutrally charged?
c. an electron
b. a compound d. a proton
a. an ion
d. a proton
Answers
Answer:
B. A compound
Explanation:
An ion is defined as a charged particle, so it's not going to be that. Ions can be positively or negatively charged.
Electrons are tiny particles, smaller than an atom, that revolve around the nucleus. They have a negative charge. So they are not neutral either
Protons are also a part of atoms, like electrons are. An atom is neutral overall. This is because protons have a positive charge that balances out the negative charge of electrons.
So, the only answer option we have left is for a compound. So, that's our answer!
Answer:
c. an electron
Explanation:
A neutral charge is the electrochemical occurrence where an atom has an equal number of electrons and protons. Such an atom is neither positively charged nor negatively charged because the protons and electrons balance each other out
1. What is the energy of a microwave photon that has a frequency of 1.07 * 10 ^ 12 * H * z; (h = 6.63 * 10 ^ - 34 * J * s)
Answers
Answer:
7.96 x 10^-22 J
Explanation:
How many moles of CH 3CH 2OH are contained in 280 mL of 0.0788 M CH 3CH 2OH solution?
Answers
4.32×10−2mol hope it helps
The element radium has a mass number of 226 and an atomic number of 88. How many neutrons does an atom of radium have?
A. 226.
B. 88.
C. 138.
D. 314.
Answers
Answer:
if you subtract 88 from 226 you get 138
so uour answer would be C.
Answer:
138
the conversion of an atom of one element into a different element through nuclear changes
A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change
82
Some of the matter is converted to energy
Explanation:
I've used this website enough I think its time for me to give back.
♔♔Can water stay liquid below zero degrees Celsius?✞♡♡♡
Answers
Answer:
Yes, water can stay liquid below zero degrees Celsius. There are a few ways in which this can happen. The freezing point of water drops below zero degrees Celsius as you apply pressure. When we apply pressure to a liquid, we force the molecules to get closer together.
Explanation:
Hope this helps you. Have a nice day.^_^
Please mark as brainliest. It helps a lot:)
Answer:
yes water can stay liquid below 0 ° Celsius
which of the following are examples of single replacement reactions select all that apply.
1) Ca(OH)2(aq) + 2 HCl(aq) ----> CaCl2(aq) + 2 H2O(l)
2)Mg(s) + Zn(NO3)2(aq) ------> Mg(NO3)2(aq) + Zn(s) 3)Na2S(aq) + Cd(NO3)2(aq) ----> 2 NaNO3(aq)
4) K(s) + 2HCl(aq) ----> 2KCl (aq) +H2(g)
Answers
Answer:
4
Explanation:
please mark brainiest
K(s) + 2HCl(aq) ----> 2KCl (aq) +H2(g) is an example of single replacement reactions.
What do you mean single replacement reactions?A single-displacement reaction, also known as single replacement reaction or exchange reaction, is a chemical reaction in which one element is replaced by another in a compound.
Single-replacement reactions always involve two pure elements and one aqueous compound/solution. In the above reaction, the A and C would be pure elements.
A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound.
Learn more about single replacement reactions:
https://brainly.com/question/13903783
#SPJ2
♔♔what is tincture of iodine?what is it's use?✞☽☻☾✞
Answers
Answer:
Iodine tincture also known as weak iodine solution is a combination of iodine, sodium iodide, ethanol, and water. It is a disinfectant or antiseptic.
Applications:
When we get cuts and scratches it is applied. It is used mainly to clean the skin to prevent bacterial infections.
Explanation:
Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot.^_^
HELP PLS WILL NAME BRANLIEST BUT No LiNkS jUsT helP No LiNkS
Answers
Answer:
I think it's A and C. Please tell me if I am wrong.
Explanation:
Answer:
Alright so I did this quiz a while ago it's A and C now could i have brainliest?
Explanation:
Hi ! ❤️looking for help you can look at my past questions. giving brainliest if able to
Fill in the blanks. Liquid B is ____________________ then liquid A and liquid B would ___________________ liquid A.
1: more dense, sink under
2: less dense, sink under
3: more dense, float on top of
4: less dense, float on top of
Answers
Answer:
I think it's number one option
which chemical formal shows an ionic compound? A. CO2 B.N 2 O C.NaCI D.C6 H12 O6
Answers
Answer:
B
N2O
Explanation:
maybe
d can also be lol
Each atom consists of a central nucleus and several shells that contain electrons. The outermost electrons are called valence electrons. Most atoms are stable with a configuration of eight valence electrons. This is known as the octet rule. How many valence electrons does each atom have?
Answers
If you are talking about an atom with a full octet, then it would just have a full shell of 8 valence electrons.
Answer:
valence
Explanation:
help me I beg you please
Answers
Answer:
44 98
Explanation:
Carbon Dioxide (CO2) - Has 1 carbon and 2 oxygens,
C=12 O=16,
Relative atomic mass(Ar) = 12 + (16 x 2),
Relative formula mass(Mr)= 44
Sulphuric Acid (H2SO4) - Has 2 hydrogens, 1 sulphur and 4 oxygens,
H=1 S=32 O=16,
Relative atomic mass(Ar) = (1 x 2) + 32 + (16 x 4)
Relative formula mass(Mr)= 98
If the roller coaster car in the above problem were moving with twice the speed (4m/s), then what would be its
new kinetic energy?
Answers
Explanation:
New kinetic energy= ½mv'²
v' =4m/s
m= 2000kg
KE = ½ (2000) (4)²
=16000 Joules
Using what you know about models, write an explanation from the following prompt
Answers
HOPE IT HELPS YOU
CAN YOU BRAINLEST ME
MARKING BRAINIEST HURRY!!
Read the following statement:
For every action, there is an equal and opposite reaction.
Does the statement describe a scientific law?
Yes, because it describes action-reaction force pairs
No, because it describes action-reaction force pairs
Yes, because it is applicable to a single or only a few events in the natural world
No, because it is applicable to a single or only a few events in the natural world
Answers
Yes, because it describes action-reaction force pairs
Can anyone help me with this?
Answers
Answer:
Label 2
Explanation:
Earth is about 2/3 of the way up the Orion Arm of the Milky Way Galaxy
Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 10 neutrons. Click on the “Templates” button template button and make use of the "stacked super/subscript" button button for entering stackes super/subscripts for entering the mass number and atomic number of the isotope.
Answers
Answer:
8 electróns
Explanation:
because the Last protons
r.
3. How are elements on the periodic table
arranged? sc.8.P.8.6
A atomic mass
B atomic number
© chemical symbol
D state of matter
no
Answers
Which types of energy can be TRANSFERRED? Select ALL that apply.
-thermal
-electromagnetic
-mechanical
-electrical
Answers
PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points . THANK YOUU
Answers
Find out how filtration is used in the human body ?
Answers
Answer:
Filtration is the removal or filtering of the toxins and waste products from the blood by the kidney. They are excreted from the body through urine. In general, filtration refers to the passing of a liquid through a filter. In the human body, the kidney functions as a filter.
Explanation:
Good luck :)
Based on the activity series you created in part C, predict whether there would be a chemical
reaction or no reaction when the listed pairs of substances are combined.
BI U X
X Х.
Font Sizes
А -
А
EEE 를 들 들
Substances
Reaction or No
Reaction
I
magnesium and copper(1)
sulfate
iron and magnesium sulfate
copper and iron(III) nitrate
magnesium and hydrochloric
acid
Answers
Answer:
first one is no reaction and the rest are reaction
Explanation:
An image of Earth's layer is above.
Which layer is the most dense?
layer A
layer B
layer C
layer D
Answers
Answer:
Layer D
Explanation:
Earth's interior layers are ordered by density. The densest layer is the solid metal inner core, the mantle is of intermediate density, and the least dense layer is the lithosphere, particularly the continental lithosphere.
Each atom consists of a central nucleus and several shells that contain electrons. The outermost electrons are called valence electrons. Most atoms are stable with a configuration of eight valence electrons. This is known as the octet rule. How many valence electrons does each atom have? * 1 point
Answers
Explanation:
Not only did outermost electron determine the valence electron, but also periodic table. whatever group they fall into in periodic table each valence electrons present in a particular atom e.g K and Ca belong to group 1 and 2 respectively and k has 1 and Ca have 2 in each outermost electron
How to create a good statement of the problem?
Answers
Why do you think some seasons are more likely than others to experience a tornado
Answers
Which of the following ions is formed when a base is dissolved in a solution?
H+
O−
OH−
SO42+
Answers
Answer:
The Answer is B.
Explanation:
I love your name and pfp its awesome!
~Hope this helps!
Why do scientists use remotely operating vehicles (ROVs) in scientific study?provide an example of their use
Answers
Answer:
Remotely operated vehicles, or ROVs, allow us to explore the ocean without actually being in the ocean. ... Additional equipment, such as a manipulator or cutting arm, water samplers, and instruments that measure parameters like water clarity and temperature, may also be added to vehicles to allow for sample collection.
Explanation:
Americans drink 5,604,000 gallons of sweet tea each day. How many liters is
that? (1 gal = 3.79 L)
Answers
5604000gallon =21239160 liters