caltex)6. } – 2 -У2х2 + 2X— 3
1. caltex)6. } – 2 -У2х2 + 2X— 3
Answer:
If -2-Y^X^2-3=0, then x=[tex]\sqrt{-Y^2-5}[/tex] , y=[tex]\sqrt{-X^2-5}[/tex]
Step-by-step explanation:
Rearrange the equation,
– 2 -У2
х2 + 2X— 3,
-2-Y^X2-3=0,
X^2Y^2-2-3=0,
Then combine like terms,
X^2Y^2-5=0,
Then equate to X,
X^2=-Y^2-5,
X=[tex]\sqrt{-Y^2-5}[/tex]
To get Y,
X^2Y^2-5=0,
Y=[tex]\sqrt{-X^2-5}[/tex]
2. 85.7 grams of platinum = to how many atoms of platinum?
Solution:
[tex]\text{number of Pt atoms = 85.7 g Pt} × \frac{\text{1 mol Pt}}{\text{195.1 g Pt}} × \frac{\text{6.022 × 10²³ Pt atoms}}{\text{1 mol Pt}}[/tex]
[tex]\boxed{\text{number of Pt atoms = 2.645 × 10²³ atoms}}[/tex]
#CarryOnLearning
3. The density of platinum is 23.4 g/cm3 . Calculate the mass of 75.0 cm3 of platinum.
Answer:
Hope you understand my solution. I'm a newbie here!
Explanation:
Density = Mass / Volume
Mass = Density x Volume
Mass = 23.4 g/cm3 x 75.0cm3
Mass = 1755 grams
4. what is atomic no. of platinum?
Answer:
my own
Explanation:
my own chart tablet of element
Answer:
The atomic number of platinum is 78.
Explanation:
according to the periodic table.
5. sa anong estruktura ng pamilihan nakapaloob ang shell, caltex at petron
Answer:
Oligopolyo
Explanation:
paki heart nalang❤
6. bakit pansamantalang isasara ang kalye mula caltex hanggang tram Plaza?
Answer:
dahil may sa covid doonjshsvsbsujagsgs
7. Platinum has a density of 22.5 g/cc, what is the mass in pounds (1lbs) of 5.9 cm 3 of platinum?
Answer:
0.2904 lbs of Platinum
Explanation:
note that cc is cubic centimeter:
Using the density formula,
D=m/V
22.5g/cm^3=mass(m)/5.9cm^3
m=22.5g(5.9) ---- cc cancels out
m=132.75g
convert g to lbs using the following conversion factors
1 kg=1000 g
1 kg = 2.2 lb
m=132.75g (1 kg / 1000g)(2.2lbs/1kg)
m=132.75(2.2)/1000 lbs
m=290.4/1000 lbs
m=0.2904 lbs
8. what is the characteristics of platinum
Answer:
Characteristics: Platinum is a precious metal; soft, silvery-white, and dense with a beautiful lustrous sheen. It is malleable and ductile and has a high melting point. Platinum does not oxidize in air even at high temperatures and is unaffected by common acids.
Atomic radius: 135 pm
Atomic weight: 195.09
Electron affinity: 205.3 kJ mol
Color: silvery-white
9. what is the atomic number of platinum
Answer:
78
source: my own chart of table of elements
Explanation:
hope it helps
study well ❤️
Answer:
The atomic number of platinum is 78.
(・∀・)
10. what is characteristic of platinum
Answer:
Platinum is a precious metal; soft, silvery-white, and dense with a beautiful lustrous sheen. It is malleable and ductile and has a high melting point.
Platinum does not oxidize in air even at high temperatures and is unaffected by common acids.
It dissolves in aqua regia (mixture of nitric acid and hydrochloric acid in the ratio 1:3) forming chloroplatinic acid (H2PtCl6).
It is also corroded by halogens, cyanides, sulfur, and caustic alkalis.
Explanation:
source: https://www.lookchem.com/Periodic-Table/Platinum/
11. Platinum solution science 8
What is Platinum?
Platinum with the atomic number 78 and an atomic mass of 195 in the periodic table is an extremely rare element found in the crust of the earth.
The word Platinum is derived from Platina (Spanish word meaning ‘little silver’), because of its grey-white silvery colour. With an availability of 5g/kg in the earth’s crust, it is one of the rarest elements and is highly valuable for the same reason. Although it was discovered relatively later by European scientists, it has been found in Egyptian tombs dating back to 1200 BC.
Uses of Platinum
It is also used in laboratories for electrodes. Optical fibres, wires, and pacemakers also make use of platinum for better efficiency. Certain compounds of platinum are used in chemotherapy for treating cancer. Some watchmakers use platinum in their watches to make it exclusive. Because of its stable physical and chemical properties, platinum metal is a very useful metal. Despite its rarity, its application is quite widespread. Because of its high stability, platinum is used extensively as a catalyst for chemical reactions. The most common application of this is the Catalytic Converter in cars which converts the Carbon monoxide (CO) and other residual pollutants into Carbon dioxide (CO2) and water vapour. The high malleability, ductility, and inertness of the metal make it especially suitable for making jewellery. Around half of the platinum extracted every year goes into making jewellery.12. Is platinum a mixture
Answer:
Platinum is a pure substance - its a transition metal
Explanation:
GIVENIs platinum a mixture
ANSWERPLATINUMIs a chemical element that have a symbol of Pt and have a atomic number 78. The word platinum come from a spanish word platino which means "little silver"Natural platinum is a mixture of six isotopes:
platinum-190 platinum-192 platinum-194 platinum-195platinum-196 platinum-198#CarryOnLearning
13. platinum(Pt) Element or compound
Answer:
element
Explanation:
hoping it's helpful
Answer:
Platinum is an element.
Explanation:
For more information, kindly visit the following links:
https://brainly.ph/question/1568744
https://brainly.ph/question/3238850
#CarryOnLearning :)
14. tell me a story about a hard working boy who has work on caltex
Answer:
a hardworking boy who was working caltex is a gasoline boy who was passed by rude customers of gas as him them for more gas and the boy said no more and the guy was being so rude
15. STAR PLATINUM: THE WORLD!
Answer:
Anong title Po Nyan? looks interesting
16. platinum kasing tunog
Answer:
Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name is derived from the Spanish term platino, meaning "little silver". ... Platinum is one of the least reactive metals.
Explanation:
17. Is platinum is element or compund?
Answer:
element
Explanation:
18. 2 chemical properties of platinum
Answer:
•Density: 21.5 g/cc.
•Hardness: 4.3 (between fluorite and apatite on the Mohs hardness scale).
19. Platinum heterogenous or homogenous mixture?
Answer:
heterogenous po welcome
20. What is the electron configuration of Platinum
Answer:
[Xe] 4f14 5d9 6s1
Explanation:
There!
21. What is the different of titanium and platinum?
Titanium is the element with the atomic number 22 and the symbol Ti while
Platinum or Pt is the transition metal with the atomic number 78.
22. what is the number of electrons of platinum
Answer:
#78 - Platinum - Pt
Explanation:
#carryonlearning❤️
Explanation:
# of protons = 78
# of electrons = 78
# of neutrons = 117
23. platinum 5metacolt
Answer:
the right and left solution of situation perfect line of life from math
24. What is the melting point of platinum
1,768○C because of yhis is I like it.
25. pamilihan, at caltex, jolibee, ano ang mga estraktura na iyong napili?
Answer:
pamilihan
Explanation:
dahil naroon ang aking mga pang araw araw na kaylangan at kumpleto dito
hope it helps
26. What are the uses of platinum?
ANSWER: Platinum is also used for electrical components, thermocouple elements, corrosion-resistance apparatuses and dentistry.
Platinum is used extensively for jewelry, manufactured into metal gauzes for nitric acid production and as a catalyst to improve the efficiency of fuel cells. In medicine, platinum compounds are important for chemotherapy.
In 2010, 245 tons of platinum were sold. Of the platinum sold, 113 tons were used for vehicle emissions control devices, 76 tons for jewelry and 35.5 tons went to further the advancement other applications, such as investment, electrodes, anticancer drugs, oxygen sensors, spark plugs and turbine engines. Platinum is used as an alloy agent for various metal products, including fine wires, non-corrosive laboratory containers, medicinal instruments, dental prostheses, electrical contacts and thermocouples. Platinum-cobalt is used to make strong permanent magnets. Platinum-based anodes are used in ships, pipelines and steel piers.
According to the Geological Survey, platinum is also important as a catalyst in synthetic organic chemistry. It is also used as a catalyst in the form of gauze for the partial oxidation of ammonia to yield nitric oxide in fertilizers, explosives and nitric acid.
^_^
27. platinum o choromite
Answer:
i would prefer platinum because it is more durable and expensive
platinum
Explanation:
sana makatulong sau
28. Mag tiyak na platinum
Answer:
huhhh picture po
Explanation:
para ma sagotan
29. Mga kompanyang monopolyo? A. MWSSB. CALTEXC. MERALCOD. PLDT
Answer:
meralco c or pldt
Explanation:
parang lang carey on learning
30. platinum 5metacoltdiamond
Answer: Ano yung tanong?
