Answer: 156
Explanation:
Which of the following is an indication that a substance has undergone a chemical change?
A.
No new product has been formed.
B.
The color of the substance has not changed.
C.
The original constitute has not changed.
D.
The molecular structure has changed.
Answer:
D.
Hope it helps!!!!!!!!!
A football is moving upwards towards its peak after having been booted by the punter.
Answer:
draw a square with an errow pointing down
Explanation:
1 How do I make a girl blush?
2 How do I know if I girl might like me by looking at her body language?
Answer:
1. Make Her Smile with You. Your smile is something which can turn the tables for you, if you possess a nice smile then it is no doubt a plus point for you or flirt with her.
2. She tilts her head while looking at you.
She constantly 'fixes' her hair, makeup, or clothing.
She returns your physical touches.
She stares or looks over at you a lot.
She blushes around you.
Explanation:
What cloud does cirrus and cumulus make???
Answer:
They're sometimes called 'mackerel skies' because they can sometimes have a grayish color which makes the clouds look a bit like fish scales. Cirrocumulus clouds exhibit features from both cumulus and cirrus clouds but should not be confused with altocumulus clouds.Explanation:
1. What is the symbol for atomic mass? What are the units of atomic mass in terms of atoms? 2. What is the symbol for molar mass? What are the units of molar mass? 3. What is the atomic mass of iron, with units? 4. What is the molar mass of iron, with units? 5. What is formula mass? What are the units of formula mass? 6. What is the formula mass of sodium bicarbonate, with units? 7. What is the molar mass of sodium bicarbonate with units? 8. What is the molar mass of water? 9. What is the molar mass of ammonia, NH3? 10. What is the molar mass of lithium oxide? 11. What is the molar mass magnesium bicarbonate? 12. What is the molar mass of cobalt(III) carbonate?
i am NOT gonna read all of that
HELP HELP HELP !!!!!!!!!!!!!!
Answer:
approximately 83.33
Explanation:
The formula for the area of a right square pyramid is:
V= a^2(h/3)
a= base edge
h= height
The height is 10 inches, and the base edge is 5 inches. Plug it in to the formula:
V= 5^2 (10/3)
V= 25 (10/3)
V= 83.33 in^3
What is the chemical formula for this?
Answer:
-OOH
Explanation:
This forms an acid if it comes in contact with a metal
Answer:
HO2; Hydroperoxyl
Explanation:
Since there are two oxygen molecules, and one hydrogen molecule, it can be classified as a hydroperoxyl molecule.
It is an inorganic compound with the following characteristics
Covalent compound (O,H are nonmetals) Valence of O (O must form an octet): 6 Valence of H: 1 Total valence electrons: 13 Molar mass: 33.01 g/molWhich molecule is butyne?
H,C CH,
ОА. С=С
н Н
В.
н нннн
| | | | |
Ос. Н-с-с-с-с-с-н
1 І
Н Н Hн Н
Hн
| |
OD. н-c=C-с-с-н
ТІ
Hн
Answer:
H,C CH,
Explanation:
I’m really confused can someone help me?
Answer:
the second energy level can hold a maximum of eight electrons
Which term describes the molecule shown below?
H-C=C-H
ethyne CxHy
A. Unsaturated alkene
B. Unsaturated alkyne
O C. Saturated alkyne
O D. Saturated alkene
Answer:
Saturated alkyne
Explanation:
The hydrocarbons are known as the compounds which is made up of only carbon and hydrogen atoms. They may be saturated or unsaturated based on the number of bonds present. The molecule H-C≡C-H is an Unsaturated alkyne. The correct option is B.
The hydrocarbons in which the carbon and hydrogen atoms are connected through double or triple bonds are known as unsaturated hydrocarbons. Here ethyne is an unsaturated hydrocarbon.
Ethyne is an alkyne which have the C-C and C-H atoms connected through triple and single bonds.
Thus ethyne is option B.
To know more about Unsaturated hydrocarbons, visit;
https://brainly.com/question/490531
#SPJ7
HELP ME!!!! What is the gravitational potential energy stored in a church bell with a mass of 60 Kg hanging in a church steeple that is 20 m high?
A. 1200 J
B. 1960 J
C. 235,200 J
D. 11, 760 J
Answer:
A
Explanation:
There
are
approximately
317,000,000
people
in
the
U.S.,
and
the
area
of
the
U.S.
is
about
4,000,000
square
miles.
If
the
people
were
spread
out
evenly,
about
how
many
people
are
there
per
square
Answer:
yesddgfhzxhcvnjxkcncjzdkccchjjbxbxbbk
When solving mass to mass stoichiometry problems, where do you get the molar ratio for the first and second chemicals?
In the mole ratio. If you have moles of one substance. And the coefficients from the balanced equation you can use the ratio to figure out the moles of the other compounds.
moreee help science plsssssssssssssssss helpp
How many moles are there in 2.35x10^23 molecules of water
Answer:
0.39017 moles
Explanation:
a mole is 6.023×10^23
(2.35×10^23)÷(6.023×10^23)=0.39017
what is the order in which types of elements are found as you move from left to right across a period? metals, nonmetals, and metalloids?
Answer:
metals, metalloids, nonmetals
Explanation:
a p e x, just took the quiz
The order is metals, metalloids, non metals in which elements are found as you move from left to right across a period.
MetalsWhen we move from left to right across a period Metals are located on the left hand side of the periodic table. Metals have high thermal conductivity.
MetalloidsWhen we move from left to right across a period Metalloids are located between metals and nonmetals. Metalloids are present p-block elements. Metalloids have good thermal conductivity.
NonmetalsWhen we move from left to right across a period Nonmetals are located on the right hand side of the periodic table. Non metals have low melting point and boiling point. Non metals have low thermal conductivity.
Thus, from conclusion we can say that the order is metals, metalloids, non metals in which elements are found as you move from left to right across a period.
Learn more about Metals, Non-metals, Metalloids here: https://brainly.com/question/1301107
#SPJ2
If you want to change the mass of your atom by 1 or more mass units, you can ether
(2 RIGHT CHOICES)
add a proton
add a neutron
add an electron
If you want to change the mass of your atom by 1 or more mass units, you can either? Add a proton and Add a neutron.
Explanation:
Option A and Option B is your answers.
To change the mass of your atom by more mass units ; you can add a proton or add a neutron ( A and B )
The nucleus of an atom is composed of a neutron and a proton while the outer shell of an atom comprises of the electrons.
The mass of an atom is dependent on the mass of the nucleus of the atom therefore to increase the mass of the atom by any number of mass units you can either add a proton or a neutron to the nucleus of the cell.
Hence we can conclude that to change the mass of your atom you can add a proton or add a neutron to the nucleus of the atom
Learn more : https://brainly.com/question/14110259
number 1 ............
Answer:
I am guessing it is B. Non-metal, metals, metalloids
A sports car requires 10 kg of 93 octane to fill the tank. How many grams of octane are in the tank when it is full?
Answer:
There are 10,000 grams of octane in the tank of the sports car when it is full
Explanation:
To solve this problem, we simply need to convert the mass of octane- 93 from kilograms to grams, using the standard conversion factor which is given below.
it will take 10kg of octane-93 to fill up the tank
1 kg = 1000grammes
therefore 10 kg = 10 X 1000 = 10,000 grams.
Hence, there are 10,000 grams of octane in the tank of the sports car when it is full.
Which of the following radiations is attracted to the positive electrode?
a.Alpha and beta particle
b.Alpha particle and neutron
c.Photon
d.Beta particle
Based on Reference Table F, describe the solubility of zinc sulfide in water.
Answer:
negligible
Explanation:
negligible meaning its not very soluble in water at all
(wikipedia)
How many moles of ammonia are produced due to the reaction with two moles of nitrogen?
Answer:
17.03052 mutiple by 2
34.06104grams
How would these organisms be arranged in a food chain, beginning with the producers?
Drag and drop each organism into the order they would be arranged in a food chain, with the producers at the top.
help me pls this due today
Answer:
grass, grasshopper, frog, snake, hawk
Explanation:
explain why copper 2 oxide is a base although it does not turn litmus paper to blue
Answer:
See explanation
Explanation:
Copper II oxide is a base but not an alkali. An alkali is a soluble base. Since Copper II oxide is not soluble in water then it is not an alkali.
Let us recall that the change of colour of litmus with an alkali requires the presence of water. In the absence of water, solid Copper II oxide does not turn red litmus paper blue.
The ability to turn red litmus paper blue is commonly observed with alkalis and Copper II oxide is not an alkali.
Also recall that since Copper II oxide is not soluble, hydroxide ions are absent hence Copper II oxide does not turn red litmus paper blue.
I got c, just wondering was it right?
Answer:
Yes you are right.
Explanation:
Answer:
yeah it´s right
Explanation:
The shape of the directly sunlit portion of the Moon as viewed from
Earth
your answer:
lunar phases
what is rasching process only chemical reaction
Answer:
The Raschig process, the original commercial production process for hydrazine, involves oxidation of ammonia to chloramine with sodium hypochlorite, then further reaction of the chloramine with excess ammonia and sodium hydroxide to produce an aqueous solution of hydrazine with sodium chloride as a by-product.
Answer: The Rasching process is a chemical process for the producing phenol
Explanation:
Which flows through the other?
A una sustancia que tenia una etiqueta poco legible se le determina de iones de 3.16x10 a la -10 M.Calcula su pH determina si se trata de jugo de naranja o leche magneisa
Answer:
pH = 9.44, leche de magnesia
Explanation:
Número de iones [H⁺] de 3.6x10⁻¹⁰M
El pH es una medida en química utilizada para determinar si una sustancia es ácida o básica.
Si el pH < 7 La sustancia será ácida (Jugo de Naranja)
Si el pH > 10 La sustancia será básica (Leche de Magnesia)
Ahora, el pH es definido como el -log[H⁺], el pH de la solución será:
pH = -log[3.6x10⁻¹⁰M]
pH = 9.44Como el pH > 7, probablemente se trate de leche de magnesia
An alpha particle is identical to a:
helium nucleus
hydrogen nucleus
high energy electron
radium nucleus
Answer: helium nucleus