Answer:
693 picograms
Explanation:
How many atoms are in 3C12H22O11
Which diagram shows a p orbital?
Answer:
Third Option
Explanation:
Different orbitals have different shapes. The shapes of the orbitals are given below;
s orbital - Spherical with the nucleus at the center. This matches the second option.
p orbital - It has an elongated like doughnut shape. This matches with the third option in the question.
d orbital - Four of the 5d orbitals are clover leaf shaped. This matches with the first option.
The specific heat of iron (Fe) is about 0.450 joules/gram °C. How much heat is needed to change the
temperature of a 20 gram sample of iron from 10 °C to 36 °C?
The heat energy needed to change the 20 gram sample of specific heat 0.450 J/ g °C from a temperature of 10 to 36 °C is 234 J.
What is calorimetry ?Calorimetry is an analytical technique used to determine the heat energy absorbed or released by a system. The calorimetric equation relating the heat energy q with the mass of the substance m, specific heat c and temperature difference ΔT is given as:
q = m c ΔT.
Given that the mass of the sample of iron = 20 g
temperature difference ΔT = 36 - 10 = 26 °C
specific heat c = 0.450 J/ g °C.
The heat energy absorbed by the sample is calculated as follows:
q = 20 g × 0.450 J/ g °C × 26 °C
= 234 J.
Therefore, the heat energy required to the raise the temperature of the sample of iron is 234 J.
Find more on calorimetry :
https://brainly.com/question/11477213
#SPJ6
what is the formula name for Co3N2
Answer:
Cobaltous Nitride,I think so anyway.......
The formula name for [tex]Co_{3}N_{2}[/tex] is cobalt(II) nitride.
In the compound [tex]Co_{3}N_{2}[/tex], the Co represents the chemical symbol for cobalt, and the N represents the chemical symbol for nitrogen. The subscript numbers indicate the ratio of atoms present in the compound.
To name the compound, we determine the charge of the cobalt ion based on the ratio of cobalt and nitrogen atoms. In this case, since there are three cobalt atoms and two nitrogen atoms, each cobalt atom has a 2+ charge.
Therefore, the correct name for [tex]Co_{3}N_{2}[/tex] is cobalt(II) nitride. The Roman numeral II is used to indicate the cobalt ion's charge.
Learn more about formula names, here:
https://brainly.com/question/28295883
#SPJ6
Can some one help me
Answer:
3
Explanation:
There are 3 Carbon (C) in 3CH4.
HOPE IT WILL HELP :)
Give examples of:
chemical reactions in the kitchen.
• chemical reactions in living things.
chemical reactions in the kitchen
Baking soda and vinegar create carbon dioxide. In both of these cases, a chemical reaction between a solid and liquid creates a new substance, a gas. Both yeast and baking soda can be used to create a gas.
chemical reactions in living things
when you hard boil an egg, the hydrogen sulfide produced by heating the egg white can react with iron from the egg yolk to form a grayish-green ring around the yolk.
Forming ionic compounds:
Write the formula unit for the ionic compound
1. Na and O
2. K and S
3. Br and Ca
4. Ba and N
5. Al and P
6. I and Al
7. F and Sr
8. Li and Cl
Answer:
Name Formula and Charge Name Formula and Charge
ammonium NH4+ hydroxide OH−
acetate C2H3O2−, or CH3COO− nitrate NO3−
bicarbonate (hydrogen carbonate) HCO3− nitrite NO2−
bisulfate (hydrogen sulfate) HSO4− peroxide O22−
carbonate CO32− perchlorate ClO4−
chlorate ClO3− phosphate PO43−
chromate CrO42− sulfate SO42−
cyanide CN− sulfite SO32−
dichromate Cr2O72− triiodide I3−
Explanation:
Balance HSO4 + ClO3 = HCl + SO3 + OH + O2
Answer:
why was my answer deleted, was it wrong?
Explanation:
This reaction supports the Law of Conservation of Mass (hint: is the equation balanced?):
2KOH ® K20 + H2O True or
False
Answer:
False
Explanation:
Left:
K = 2 atoms
O = 1 atoms
H = 1 atoms
Right:
K = 2 atoms
O = 1 atoms
H = 2 atoms
O = 1 atoms
As you can see both sides do not have the same amount of atoms, therefore it is not balanced.
Hope this Helps!!:)
What is the total number of electrons in all three
P
orbitals if
they are completely filled?
Answer:
C. Six
Explanation:
one filled p orbital holds 2 electrons, so if there are 3 p orbitals there are 6 electrons total.
What is the electron of (Kr)5s24d10
Answer: [Kr] 5s24d10 is the element Cadmium, Cd. It has 48 electrons.
Convert 5.00 moles of carbon to grams. Be sure to report your answer with the correct significant figures.
1 moles Carbon to grams = 12.0107 grams
2 moles Carbon to grams = 24.0214 grams
3 moles Carbon to grams = 36.0321 grams
4 moles Carbon to grams = 48.0428 grams
5 moles Carbon to grams = 60.0535 grams
6 moles Carbon to grams = 72.0642 grams
7 moles Carbon to grams = 84.0749 grams
8 moles Carbon to grams = 96.0856 grams
9 moles Carbon to grams = 108.0963 grams
10 moles Carbon to grams = 120.107 grams
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 60g is the mass of 5.00 moles of carbon.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically, the formula for mole can be given as
mole of carbon =given mass of carbon ÷ molar mass of carbon
number of mole of carbon= 5.00 moles
mass of carbon=?
molar mass of carbon= 12.0107 grams
Substituting the values in above formula we get
5.00 moles = mass of carbon ÷12.0107 grams
On calculations, we get
mass of carbon =60g
Therefore, 60g is the mass of 5.00 moles of carbon.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ2
Sarah heated 20 grams of liquid hydrogen peroxide until it was completely
broken down into liquid water and oxygen gas. Which of these BEST
describes the total mass of water and oxygen that was produced?*
Answer:
I would say C
Explanation:
In order to make a peanut butter and jelly sandwich you need two slices of bread 12 g of peanut butter and 15 g of jelly grape what ingredient we run out of first if you had 28 slices of bread 120 g of peanut butter in 135 g of grape jelly
Answer:
Grape Jelly
Explanation:
There is enough for at least 14 sandwiches with the bread:
28/2 = 14
There is enough for at least 10 sandwiches with the PB.
120/12 = 10
However, there is only enough for 9 sandwhiches with the grape jelly.
135/15 = 9
Sodium (Na) is a highly reactive element. Which characteristic of sodium is responsible for
its reactivity?
A. It has 11 protons.
B. Its atomic mass is 22.990.
C. It is a non metal.
D. It has one valance electrons.
Answer:
D. It has one valence electron is Answer.
Explanation:
I hope it's helpful!
Is MgS ionic or covalent
Answer:
Ionic
Explanation:
Mg has 2 electron in it's outermost orbit, by donating this two electron to Sulfur it get stable mg 2+ electronic configuration while sulfur has 6 electron in it's outermost shell ,so sulfur accept this 2 electron and complete it's octet and become s2–.
Does nitrogen or antimony have a smaller ionization energy? Support your answer using atomic structure. (ex: energy levels, attraction, nuclear charge).
Answer:
Antimony, it increases as it goes across a period and decreases as it goes down a group. Does potassium or lithium have the smaller atomic radius? Lithium, because as you move across a period it gets weaker and down a group, it gets stronger.
If the fuel had a mass of 2g,
how much heat energy does
each gram of fuel release?
Answer:
Explanation:
Worked example – calculating energy per gram of fuel
Energy given out = mass of water × 4.2 × temperature change.
Energy measured in joules, J.
4.2 is the specific heat capacity of water, J/g°C.
Temperature change = temperature of water after heating – temperature of water before heating.
BRAINLY PLZ
A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over
the next few minutes?
A. Molecules in both the metal and the surrounding air will start moving at lower speeds.
B. Molecules in both the metal and the surrounding air will start moving at higher speeds.
C. The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
D. The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down
Which of these are ways in which a seed might be dispersed? Check all that apply. organisms clouds wind water rocks
Answer: organisms
wind
water
Explanation:
There are several ways through which plants can move the seed of plants from one place to another. It isn't possible for plants to move their seeds themselves, therefore, there are other methods for their seeds to be moved.
These include fire, wind, animals, organisms, water, fire, water etc. It should be noted that rocks and clouds are not dispersion methods.
Answer: Organisms, Wind , Water
Explanation: I got it correct on Edge
a glass of ice water is shown down below before and after it reaches room temperature. which of the following correctly explains something that occurred during that time between these two images
Answer:
the solid melted and gained energy
it also looks like some of the water evaporated
Explanation:
p.s. also the molecules expanded
The picture shows that a physical change has taken place which converted ice to water.
What are physical changes?
Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.
Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.
They involve only rearrangement of atoms and are often characterized to be changes which are reversible.
Learn more about physical changes,here:
https://brainly.com/question/17931044
#SPJ2
Here's a freebie for you guys
Air is a ________ mixture??
GIVING THE BRAINLIEST
When hair sticks to your comb as it is being combed, this is a result of
a. charging by friction
b. charging by conduction
c. charging by induction
d. grounding
The correct answer is A. Charging by friction
Explanation
When someone rubs a comb with their hair when they are combing it and the hair sticks to the comb occurs a phenomenon called electrization, in which a neutral body becomes charged or loses an electrical charge (electrons). One way that electrization occurs is through the rubbing of two neutral bodies which causes one to be positively charged and the other negatively causing them to attract each other by magnetism. Therefore, the correct answer is A. Charging by friction
How many plates is Earth made up of?
also this is science not chemistry I just couldn't find a science
Answer:
seven
Explanation:
There are major, minor and micro tectonic plates. There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American. The Hawaiian Islands were created by the Pacific Plate, which is the world's largest plate at 39,768,522 square miles.
Different substances are made from different ____________ which interact with water in different ways.
Answer: atoms/molecules
Explanation:
What is the empirical formula of a compound if a sample contains 8.52 grams of carbon and 1.42 grams of hydrogen
Answer:
CH2
Explanation:
what is the ratio of hydrogen(H) to oxygen(O) in hydrogen peroxide(H2O2)?
A 1:1
B 2:2
C 1:2
Answer: 2:2 but if simplified it’s 1:1
Explanation:
1. Any gentle wind is called a
It's called a breeze
How many grams are in a centigram in scientific notation
Answer:
0.01
Explanation:
The answer is 0.01. We assume you are converting between gram and centigram. You can view more details on each measurement unit: gram or centigram The SI base unit for mass is the kilogram. 1 kilogram is equal to 1000 gram, or 100000 centigram.