Answer:
All of them I think
Explanation:
STEM is science, technology, engineering and math, and all of them use that in some aspect
what do you call the materials in which electricity pass easily?
a. insulator
b. conductors
c. non conductors
d. metallic
Answer:
Conductors
Explanation:
is the answer A or B?
Answer:
Letter DHope I helped!♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥
A bowling ball is let go from a height of 30 cm. What is the velocity of the
ball just before it hits the ground?
Select one:
о
0.30 m/s.
О
17 m/s.
O
24 m/s
a
1.3 m/s
Answer:
The answer is 0.30 m/s
Explanation:
i search it on
What mass of silver nitrate will react with 5.85 grams of
sodium chloride to produce 14.35 grams of silver chloride
and 8.5 grams of sodium nitrate?
who discovered electron
Answer: Electricity
Answer:
J.J Thomas in 1897
How many grams equal 4.3 x 1024 atoms of oxygen (O2)?
Answer:
https://socratic.org/questions/how-many-grams-are-in-1-25-x-10-22-atoms-of-oxygen#403337
Explanation:
What are 3 kinds of moles
Name two metals which will not liberate hydrogen from
dilute tetraoxosulphate(vi) acid.
To solve such this we must know the concept of double displacement reaction. Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from dilute tetraoxosulphate(vi) acid.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
Copper (Cu) and silver (Ag) would not liberate hydrogen because they are less reactive than hydrogen since their standard reduction potential is higher.
Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from
dilute tetraoxosulphate(vi) acid.
Learn more about the chemical reactions, here:
https://brainly.com/question/3461108
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I really need help with this chemistry assignment multiple choice
Answer:
b option to is correct and answer bro
Males have glands called testes that release the hormone known as _______________. a estrogen b epinephrine c testosterone d toblerone
Answer:
testosterone is released from their testes!
Below is a chemical equation. Which of the following are identified by the blue arrows?
Captionless Image
atomic numbers
coefficients
products
subscripts
What is a group of words called that contains elther a subject or a verb, but not both?
Answer:
Phrase
Explanation:
Phrases don't have both, but clauses do.
HELP
The potential energy diagram for a reaction starts at 180 kJ and ends at 300 kJ. What type of reaction does the diagram best represent? (5 points)
Exothermic reaction
Endothermic reaction
Reaction between two solids
Reaction between two liquids
Answer:
Exothermic reaction
Explanation:
An exothermic process releases heat, causing the temperature of the immediate surroundings to rise
Answer:
Endothermic
Explanation:
Please Answer all 4 questions and i will give brainliest!
You haven't added the 4 questions, so when you upload them, i'll answer.
A baby chicken has feathers on its feet that are similar to that of its parents. Where are the instructions stored that provide information for a baby chicken’s feathery feet? A) In cytoplasm inside cells B) On genes within chromosomes C) On the cell membrane Eliminate D) In the mitochondria
Answer:
B) On genes within chromosomes
Explanation:
Answer:
B) On genes within chromosomes
A nucleus of uranium 235 decays. Its decay produces a nucleus of an unknown element (x), a nucleus of helium 4 and energy. What kind of radiation is produced by this decay?
Gamma beta or alpha?
Answer: Alpha
Explanation:
Alpha particle form of decay produces a nucleus similar to the element helium. During Alpha decay an atom spits out two protons and two neutrons from its nucleus.
Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g)
Use the balanced chemical equation above to determine the number of moles of hydrogen gas that would be produced if 3.50 moles of solid magnesium reacted. please show all work and record your answer with proper units and significant figures.
Pls help
Answer:
2Mg + 4HCl (aq) --> 2 MgCl2 (aq) + H2
Explanation:
balanced...
Which of the following is not a reason for extinction?
a change in climate
a change in predation rate
the ability to breed successfully
loss of habitat
Answer:
the ability to breed successfully
Explanation:
Answer:
the ability to breed successfully
Explanation:
the more offspring's an organism has, the less chance of extinction would happen. I hope that helped bestie
Help me get it right and no links
B) A company president would like to offer a 4.00 L cylinder containing 500 g of chlorine in the new catalog. The cylinders you have on hand have a rupture pressure of 40 atm. Use both the ideal gas law and the van der Waals equation to calculate the pressure in a cylinder at 25°C. Given a = 6.58 L2 atm mol-2 and b = 0.056 L mol-2, Cl =35.5. (5 marks)
Answer:
43.1atm is the pressure using gas law and 27.2atm using Van der Waals Law.
Explanation:
Ideal gas law is:
PV = nRT
Where P is pressure in atm
V is volume = 4.00L
n are moles of the gas (For chlorine Molar Mass: 70.90g/mol):
500g * (1mol / 70.90g) = 7.052 moles
R is gas constant = 0.082atmL/molK
T is absolute temperature = 25°C + 273 = 298K
To solve the pressure, P:
P = nRT/V
P = 7.052mol*0.082atmL/molK*298K / 4.00L
P = 43.1atm is the pressure using gas law.
Van der Waals equation is:
[tex]P + a(\frac{n}{V})^2 * (V-nb) = nRT[/tex]
Where a is 6.58L²atm*mol⁻²
b = 0.056Lmol⁻²
Solving for pressure:
[tex]P + a(\frac{n}{V})^2 = \frac{nRT}{(V-nb)}[/tex]
[tex]P = \frac{nRT}{(V-nb)}-a(\frac{n}{V})^2[/tex]
[tex]P = \frac{7.052mol*0.082atmL/molK*298K}{(4.00L-7.052mol*0.056L*mol)}-6.58L^2mol^{-2}(\frac{7.052mol}{4.00L})^2[/tex]
P = 172.323 / 3.6051 - 20.4866
P = 27.2atm using Van der Waals Law
a force of attraction between objects that is due to their masses and distance between objects
a. gravity
b. weight
c. mass
Answer:
the answer is gravity
hope this helps
If an organism ingests 950.0 g of glucose (C6H12O6) in its lifetime, how many grams of carbon dioxide (CO2) will be released? (molar mass C6H12O6 = 180.156 g/mol) (molar mass CO2 = 44.009 g/mol)
Answer:
1392. g CO2
Explanation:
HELPPPPPP!!!! ILL MARK YOU BRAINLIEST!
A cube has a mass of 100g and each side is 5cm. What is its density?
A supersaturated solution is said to contain
Explanation:
A solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature.
I hope it helps
Answer:
A supersaturated solution is said to contain more solute than it can dissolve at that given temperature.
During a phase change, such as melting or boiling, the kinetic energy __. Highlight correct answer
Answer: During a phase change, such as melting or boiling, the kinetic energy increases.
Explanation:
Kinetic energy is the energy obtained by the molecules of a substance due to their motion.
When phase change such as melting or boiling takes place then it means heat is absorbed by the substance. As a result, their molecules more even more rapidly from one place to another due to which more number of collisions take place.
Hence, a change in phase of substance occurs as kinetic energy increases in melting or boiling process.
Thus, we can conclude that during a phase change, such as melting or boiling, the kinetic energy increases.
How much concentrated 15.54 M sulfuric acid is need to prepare 6.1 mL of a 2.28 M solution?
Answer:
0.895 mL
Explanation:
Using the formula;
C1V1 = C2V2
Where;
C1 = initial concentration (M)
C2 = final concentration (M)
V1 = initial volume (mL)
V2 = final volume (mL)
According to the information provided in this question;
C1 = 15.54M
V1 = ?
C2 = 2.28M
V2 = 6.1 mL
Using C1V1 = C2V2
V1 = C2V2 ÷ C1
V1 = (2.28 × 6.1) ÷ 15.54
V1 = 13.908 ÷ 15.54
V1 = 0.895 mL
Which process is exothermic?
a) the vaporization of water b) the freezing of water c)the sublimation of dry ice d ) the boiling of liquid nitrogen
Answer:
Freezing of water
Explanation:
When water becomes a solid it releases heat into its surroundings (warming it up).
he diagram shows a device that uses radio waves.
Two radio towers. The towers are equal distance apart with an arrow between them. The left tower is labeled X. The right tower is labeled Y. The arrow is pointing from Tower X to Tower Y.
What is the role of the part in the diagram labeled Y?
modulate, amplify, and send out waves
capture, amplify, and demodulate waves
change the amplitude and frequency of waves
change the pulse and phase of waves
Answer:
b
Explanation:
When precipitation falls in summer, sometimes wind pushes it back up into freezing temperatures before falling again. What will most likely occur when this happens?
A.
hail will fall
B.
rain will fall
C.
sleet will fall
D.
snow will fall.
Answer:
A
Explanation:
hail will fall push it back up making it bigger comes back down
Vitamin B12, cyanocobalamin, is essential for human nutrition. It is concentrated in animal tissue but not in higher plants. Although nutritional requirements for the vitamin are quite low, people who abstain completely from animal products may develop a deficiency anemia. Cyanocobalamin is the form used in vitamin supplements. It contains 4.34% cobalt by mass. Calculate the molar mass of cyanocobalamin, assuming that there is one atom of cobalt in every molecule of cyanocobalamin. WebAssign will check your answer for the correct number of significant figures. g/mol
Answer:
645 g/mol
Explanation:
Step 1: Given data
Percent by mass of cobalt in cyanocobalamin: 4.34%
Step 2: Determine the molar mass of cyanocobalamin
There is one atom of cobalt in every molecule of cyanocobalamin, or what is the same, there is 1 mole of atoms of Co in every mole of molecules of cyanocobalamin. Given the molar mass of Co is 28.01 g/mol, the molar mass of cyanocobalamin is:
100 g B12/4.34 g Co × 28.01 g Co/1 mol Co × 1 mol Co/1 mol B12 = 645 g/mol