Answers
17.0g PH3 x 1 mol PH3 / 34.0 g = 0.5 mol PH3
Related Questions
where is lithium and Flourine found on the periodic table?? :)
Answers
Answer:
Hello! Lithium is a Alkali metal, and is located on the left of the periodic table, right below Hydrogen (H), and right above Sodium (NA) .
Fluorine is located on the right of the table, next to Oxygen (O) and Neon (NE), and right above Chlorine (Cl).
Hope this helps !! :)
Home can use ____to distribute warm air from a sunroom
Answers
Answer:
Solarpannels? I honestly don't know I'm just trying to be helpful.
What is the answer, just the letter. No explanation needed
Answers
Answer:
Explanation:
f i did this in my class
Answer:
3 rd
Explanation:
yes answer is 3 you can go with it
Pls help me with this question
Answers
Answer: b
Explanation: 50% comes from one parent and 50% comes from the other
Bones function as levers for the muscle to provide movement of the body. What refers to increasing the angle of the joint, thus moving two bones farther apart?
A) Abduction
B) Adduction
C) extension
D) flexion
Answers
Answer:
It would be B
Explanation:
Which family group on the peirodic table has the most elements
a. metals
b. nonmetals
c. trainsiton elements
d. metalloids
Answers
Answer:
C. Transition metals
Explanation:
Out of the answers transition metals have the most elements on the periodic table.
the law of conversation of mass states that the mass of the reactant is ___ the mass of products
Answers
Answer: equal to
Explanation:
Ground water, the largest source of fresh water, is stored in bodies of rock and or sediment
a. porosity
b. sediment
c. particles
d. aquifers
i dont even know what this means
Answers
Hope this helps chief.
If 2.5 moles of H2O are needed to be produced, how much H2 will be needed?
Answers
Answer: Hope it can help you :)
Explanation:
How does weathering, erosion and deposition shape the Earth and contribute to the rock cycle
Answers
Answer:
it think like it kicks all the stuff away from the ground stuff, thats the best i can do sorry., im not a science person.
Explanation:
Please answer correctly nobody answers questions like this on brainly. BTW ITS STEM.
Which of the following choices describes an accurate relationship?
Descriptive research typically follows from explanatory research
Experimental research may lead to understanding descriptive research
Case study research typically follows from descriptive research
Observational research may lead to understanding explanatory research
Answers
Answer:
I believe your answer is B. Experimental research may lead to understanding descriptive research.
Generally, experimental research is a trial and error method that tests the hypothesis of descriptive research. Descriptive research being the theoretical or studied characters of a topic.
Please let me know if I had this wrong, and I'll do some extra research for you.
LEVEL 1
Codes Answers
Answers
Answer:
That would be codes unregonizable
Explanation:
HELP !!!!!!!!!!!!! PLEEEAAAAASSSSSSEEEE
Answers
spring equinox: march 21-22
summer solstice: june 20-21
winter solstice: december 21-22
fall equinox: september 22-23
The volume of a gas is 200mL at 2.0atm. What will it's volume be at 4.0atm?
Answers
Answer:
V = 100 ml
Explanation:
P1V1 = P2V2
P1 = 2.0 atm
V1 = 200ml
P2 = 4.0 atm
V2 = ?
(2.0)(200) = (4.0)V2
400 = (4.0)V2
V2 = 100
The new pressure will be
1000 L
, rounded to one significant figure.
Explanation:
Boyle's law states that when a gas is held at a constant temperature and mass in a closed container, the volume and pressure vary inversely. The equation to use is
P
1
V
1
=
P
2
V
2
.
Given
V
1
=
200
mL
×
1
L
1000
mL
=
0.2 L
P
1
=
700 mmHg
V
2
=
100
mL
×
1
L
1000
mL
=
0.1 L
Unknown
P
2
Equation
P
1
V
1
=
P
2
V
2
Solution
Rearrange the equation to isolate
P
2
and solve.
P
2
=
P
1
V
1
V
2
P
2
=
(
700
mmHg
×
0.2
L
)
0.1
L
=
1400 L
, which must be rounded to
1000 L
because all of the measurements have only one significant figure
tot Which of the following is not a property of water?
O A. ability to moderate temperatures
O B. ability to adhere to other substances
O c. ability to contract upon freezing
O D. ability to dissolve a wide variety of substances
Answers
Calculate the formula mass (Mr) of the compound iron (III) oxide, Fe2O3.
(show working)
Answers
Answer:
100
Explanation:
Fe = 26 (look on periodic table)
O = 16
(26×2) + (16×3) = 100
You are planning to buy a car. The cool blue car gets 24 miles to the gallon, while the hip red gets 14 km to the liter. Which car gets the better gas mileage?
Answers
Why does heating an object increases its thermal energy?
Answers
Answer:
the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
Whats the correct answer ??
Answers
Answer:
creo que es R no se puede ser
help please.
4. Two unknown elements react to a form a single compound. Element 1 is shiny, malleable, and conductive. Element 2 is a non-conductive gas. When they react, what would you expect to be true about the compound produced? (AKS 2a DOK 3)
a.The compound will probably have properties of both elements like a metalloid.
b.The compound will probably have high boiling points and melting points and will be conductive in solution.
c.The compound will probably have low boiling and melting points and will not be conductive in solution.
d.The compound will probably have high boiling and melting points and will not be
Answers
Answer:
this is my old account and these still dont have answers
Explanation:
How many electron can be found in a p orbital?
Answers
What is the chemical formula for nickel (III) oxide, I know the answer but can someone explain how you would get it?
Answers
Answer:
the answer is d.
1. Write the symbols for each element.
2. Find the charge for each element using the Periodic Table. Write it above each element. (because there is a (III) after nickel, the charge of nickel is +3. oxygen is in group 16, which means it has a -2 charge.)
3. See if the charges are balanced (if they are you're done!)
- when you criss cross (getting Ni2O3, the charges are canceled out, so the equation is balanced.
if you still need help or if this is confusing, look up How to Write the Formula for Nickel (III) oxide by Wayne Breslyn on YT.
Answer:
D.) Ni2O3
Explanation:
edge 2021 (just needed the daily answer)
Between the two elements Neon (Ne) and Silicon (Si) which is more stable explain your reasoning?
Answers
Answer:
Neon is a gas and silicon is a solid i solved this for my chemistry teacher dr Thomas project this week
Explanation:
gasses are naturally less stable then non metalloids
What is the mass of 5.50 mol of iron
Answers
Answer:
306g
Explanation:
[tex]m=5.5*56=308g[/tex]
Answer:
307.45
Explanation:
atomic mass of iron is 55.9 grams
mass = atomic mass × number of moles
= 5.5 × 55.9
= 307.45
Gas
% of Volume
7.
N
78
Oz
21
Ar
.9
CO2
.04
Ne
1.0018
He
.00052
CHA
.00017
Kr
.00011
H2
.00006
Using the chart above, which gases make up the majority of the Earth's atmosphere?
HELP ASAP
Answers
Answer:
this would be the .04 it is very simple
Explanation:
what is the percent composition of a mixture of 5.12g of O and 1.54g of N
Answers
Answer:
no lo sé bb 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100
Zora wants to dissolve a solute in a solvent quickly. Which best describes what she should do?
decrease the pressure
decrease the surface area
shake it repeatedly
place in a refrigerator
Answers
Answer:
C shake it repeatedly
Explanation:
i think thats the answer if not sorry hope it helps you.
Answer:
C.
Explanation:
Part 1)
One reaction that produces hydrogen gas can be represented by the unbalanced chemical equation- Mg(s) + HCl(aq) −→ MgCl2(aq) + H2(g).
What mass of HCl is consumed by the reaction of 3.15 mol of magnesium?
Answer in units of g.
Part 2) What mass of MgCl2 is produced? Answer in units of g.
Part 3) What mass of H2 is produced? Answer in units of g.
Answers
Answer:
Part 1: 229.95g
Part 2: 598.5g
Part 3: 12.6g
Explanation:
Note: I learned this last week. Answer not sure.
Pls tell me if i got it right or wrong.
Mg + HCl - > MgCl2 + H2
First, balance the equation.
There is only 1 H and 1 Cl at the left side. BUT there are 2 Cl and 2 H at the right side. So you can add a 2 in front of HCl to balance it.
Mg + 2HCl - > MgCl2 + H2
Formula 1: (n= m/mr)
n = moles, m= mass, mr = molecular mass
Formula 2: (n= v/24)
v = volume
Part 1
What mass of HCl is consumed by the reaction of 3.15 mol of magnesium?
Ratio of
(look at the number in front of each)
2HCl : Mg
2 : 1
(3.15 x 2) : 3.15 moles
6.3 moles : 3.15 moles
So 2HCl has 6. 3 moles
Now use formula 1 (n = m/mr)
Calculate molecular mass of HCl
Check your periodic table
mr of HCl =(1 + 35.5) = 36.5
6.3 = m/36.5
m = 229. 95grams
Part 2
What mass of MgCl2 is produced? Answer in units of g.
Ratio of
2HCl : MgCl2
(1 +35.5) : (24+35.5x2)
36.5: 95
229.95g :?
229.95g : 598.5g
m = 598.5g
Part 3
What mass of H2 is produced? Answer in units of g.
2HCl : H2
36.5 : 2
229.95g :?
229.95g : 12.6g
m = 12.6g
Draw the Lewis structure for AB4
Answers
I really need the help in anyway...
Answers
Answer:
What substance changed physically under all three condition? Copper Wire
What substance changed chemically under all three condition? Steel Wool
What evidence indicates a chemical reaction is occurring? New gases are produced; A phase change has occurred; A color change
Select the three answers that are examples of a chemical reaction. The mixing of an acid and base shows an increase in temperature; after baking bread there is a new odor or smell; when hair is bleached it changes to a lighter color
Which data supports this inference? Baking soda dissolving; A gas formed, creating bubbles
Which experiment best shows evidence of energy being released in a chemical reaction? Heat and light are given off when paper is burned
Which experiment likely resulted in the formation of a precipitate? Two solutions are mixed together and a yellow solid forms
The BEST evidence for a chemical reaction is the formation of a new substance.
Explanation:
2. When heat and light are being given off, energy is being released. Paper burning is a chemical reaction b/c when paper is burnt, it is a new substance and the act can't be undone.
3. When a yellow solid forms, that solid is the participate.
4. You will for sure have a chemical reaction if a new substance is created.
5. Copper wire changed physically b/c the copper wire can be returned to its original condition in all of these situations and no new substance was formed. Steel Wool changed chemically b/c it can't be returned to its original state under any condition and new substances were formed every time.
6. New substances formed indicate a chemical reaction. A color change also is an indication of a chemical reaction.
7. When a substance can't be turned into its original position or a new substance is produced, a chemical reaction occurred.