Answer:
Uhh i'm not sure if this can help but natural resources?? SO SORRY IF IT DOESN'T HELP!
Answer:
Strong Acids
Explanation:
What is the difference between voluntary and involuntary muscles?
A. Voluntary muscles are striated and tire easily; involuntary muscles are not striated and do not tire easily.
B. Voluntary muscles can be almost anywhere; involuntary muscles are found only in the heart.
C. Voluntary muscles are under your conscious control; involuntary muscles are not.
D. Voluntary muscles are all skeletal muscles; involuntary muscles are cardiac muscles.
What are the half-reactions for a galvanic cell with aluminum and gold electrodes?
A. A3+ (aq) + 3e > Al(s) and Au+(aq) + e* → Au(s)
B. Al(s) → A13+(aq) + 3e and Aut(aq) + e
Au(s)
C. AB+(aq) + 3e – Al(s) and Au(s) — Au (aq) + e
D. Al(s) → AB+(aq) + 3e and Au(s) → Au(aq) + e
Answer:B is right
Explanation: Al loses electrons and is oxidised, Au gains electron. And is reduced
To solve such this we must know the concept of half cell reaction. Therefore, the correct option is option B that is Al(s) → A1³⁺(aq) + 3e and Au(aq) + e [tex]\rightarrow[/tex]Au(s)
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.
Oxidation is loss of electrons and reduction is gain of electrons. The electron transfer from oxidant to reductant. Al loses electrons and is oxidized, Au gains electron. And is reduced.
Therefore, the correct option is option B that is Al(s) → A1³⁺(aq) + 3e and Au(aq) + e [tex]\rightarrow[/tex]Au(s)
Learn more about the chemical reactions, here:
brainly.com/question/3461108
#SPJ2
A 25.0 ml sample of gas has a pressure of 760 torr. What is the volume of the gas if the pressure decreases to 380 torr ? Assume constant temperature.
Please help thanks.
Answer:
50mL
Explanation:
Using Boyle's law equation as follows:
P1V1 = P2V2
Where;
P1 = initial pressure (torr.)
P2 = final pressure (torr.)
V1 = initial volume (mL)
V2 = final volume (mL)
According to the information provided in the question,
V1 = 25.0mL
V2 = ?
P1 = 760 torr.
P2 = 380 torr.
Using P1V1 = P2V2
V2 = P1V1//P2
V2 = (760 × 25) ÷ 380
V2 = 19000 ÷ 380
V2 = 50mL
Heat _____________.
A. Is the Internal energy of matter
B. Is the same as temperature
C. Is a measure of energy
D. Cannot move through a vacuum
Answer:
A. Is the Internal energy of matter
Hope this helps!
Why is a comet's orbit considered a cycle?
Answer:
. Comets go around the Sun in a highly elliptical orbit.
Explanation:
Answer:
Comet's orbit around the sun at a rapidly high speed witch considers the comets orbit a cycle.
Hello, just wondering if anyone could help. If so thanks!!!
A student measures out 5 mL of calcium chloride solution into a small container and 5 mL of sodium carbonate solution in another small container. The total mass of both chemicals and the containers they are in is 15.5 g. When the student combined the two clear liquids, a gooey, cloudy precipitate formed. What would the total mass of the products and the two containers be after this reaction took place?
Group of answer choices
15.2 g
15.5 g
31.5 g
Answer:
15.5g
Explanation:
your welcome
Describe the conversion of light energy in a blackberry plant.
Answer:
Anthocyanins are used in organic solar cells because of their strong light harvesting, and their ability to convert this light energy into electrical energy.
Explanation:
Solar panels plug you into the sun by absorbing solar energy with photovoltaic (PV) cells. When hit with sunlight, they generate electricity which then flows into a device called an inverter which converts the electricity into a form (120 volts, 60Hz) for household use.
By the way...... what do those symbols for the elements have in common (for number 7-11): Pb, Au, Cu, Hg, Na ? *
Answer:
those have symbols for their Latin or Greek name
Explanation:
hope it helps
Answer:
Na number of 11
Explanation:
Pb no. 82
Au no. 79
Cu no. 29
Hg no. 80
What is the concentration, in M, of a KBr solution that contains 0.0688 moles of
KBr dissolved in 0.250 liters?
2.75 M
3.63 M
1.78 M
0.275 M
Answer:
2.75M
Explanation:
Concentration(M)= mol/volume
0.0688mol/0.250L
=0.2752M
HNO3 + KOH + H2O + KNO3
ACID:
BASE:
SALT:
Explanation:
acid, HNO3
base, KOH
salt ,KNO3
How many mols of H2SO4 is in 0.80 L of 1.40 M H2SO4?
Exercise 2:
The thermic decomposition of potassium chlorate (KClO3
) is a method used at laboratory to produce oxygen (O2
) and produce potassium
chloride (KCl).
1. Write the balanced equation of the reaction
2. Calculate :
3.1. The molar mass of KClO3
3.2. The number of moles of oxygen gaz produced during the decomposition of
0,5mol de KClO3
(s)
3.3. The mass of potassium chloride obtained from 30,6 g KClO3 solid
M(K)= 39 g.mol-1
; M(Cl)= 35 g.mol-1
; M(O)= 16 g.mol-1
Answer:
1. KCLO3------>KCL + 3/2O2(g)
2. 122.5g/mol
3. 0.2mol
4. 18.5g
Early historical models of the solar system were geocentric. Which of these phrases describes a geocentric solar system?
A. the sun as a reference point
B. existing in a star system
C. Earth as a reference point
D. circular, orbital path of travel
The accurate description of a geocentric solar system is the earth as a reference point.
The solar system refers to the arrangement of the sun and the planets. The description of the solar system in which the earth constitutes the center or reference point is called the geocentric model.
An alternative and more accurate model devised by Copernicus is the heliocentric model in which the sun lies at the center of the solar system.
Learn more: https://brainly.com/question/957540
what type of intermolecular forces does ammonium lauryl sulfate have?
Answer:
Ammonium lauryl sulfate, like any other surfactant, makes a good base for cleansers because of the way it disrupts the hydrogen bonding in water. Hydrogen bonding is the primary contributor to the high surface tension of water. In hydrogen bonding with the water surrounding them.
butane is a saturated hydrocarbon
What is the freezing point of water if 15.0 g of NaCl is dissolved
in 100. g of water? (Kf of water = 1.86 K-kg/mol)
a
255 K
b 263 K
C273 K
d 268K
e 277 K
Answer:
263
Explanation:
When sand is mixed with water, it forms:
Answer:
Heterogeneous mixture.
(The composition is not uniform.)
Help would be majorly appreciated
Answer:
a) the atomic number is 15
b) the mass number is 15+16 = 31
c) element is phosphorus
d)Group 15 period 3
How many moles are in 38 grams of Argon?
Answer:
we can conclude that there are 0.55 moles in 22 grams of argon.
which Scientific discovery resulted in the solid atom theory
being adapted into the Plum Pudding model of the atom?
Answer:
After discovering the electron in 1897, J J Thomson proposed that the atom looked like a plum pudding . To explain the two types of static electricity, he suggested that the atom consisted of positive 'dough' with a lot of negative electrons stuck in it.
A functional group is a specific arrangement of atoms in an organic compound that is capable of characteristic reactions
Is this true of false
PLEASE HELPP ASAP I Would appreciate it
Answer:
True
Explanation:
If I fill a balloon with 5.2 moles of gas and it creates a balloon with a volume of 32.5 liters, how many moles are in a balloon at the same temperature and pressure that has a volume of 15.9 liters?
Answer:
5.2 multiple by 32.5
Ur answer divide by 15.9
169 divided by 15.9
ANSWER is 10.6
PLEASE HELP
A strong acid will __________ into ions when placed in water.
A
not dissolve
B
partially dissolve
C
completely dissolve
D
sometimes dissolve
Answer:
c. completely dissolved
.The ___________ is the muscular organ that pumps blood through the circulatory system by rhythmic contractions and relaxation
heart
lungs
kidneys
liver
Help!!!
how many mol are there if there are 3 mol of KNO3?
Answer:
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles KNO3, or 101.1032 grams.
Which of these belongs in the outermost shell (energy level) of an atom?
A)Neutrons
B)Photons
C)Electrons
D)Protons
Answer:
C)Electrons
Explanation:
Hope this helped!!!
Which index fossil is most likely to be found in
the Allegheny Plateau?
Answer:
amphibians
Explanation:
please mark this answer as brainliest
Buscaban el elixir de la vida eterna A) Los alquimistas B) Los flogistas C) Los iatroquímicos D) Los químicos E) Los brujos
Answer:
A) Los alquimistas.
Explanation:
¡Hola!
En este caso, es necesario recordar que en la historia de la ciencia, la alquimia se define como una vieja práctica protocientífica con tintes filosóficas que se enfocaba en la combinación de elementos de la química, metalurgia, física, medicina, astrología, semiótica, misticismo, espiritualismo y el arte; por tal razón, se sabe que esta era la que buscaba el elixir de la vida eterna. Por lo tanto, la respuesta es A) Los alquimistas.
¡Saludos!
Calculate the pH of the solution, given the following (H+). Then identify the
solution as acidic, basic, or neutral. [H+]=7.94x10^-5 *
4.1; basic
0 6.9; basic
04.1; acidic
Answer: 4.1 Acidic
Explanation:
pH = -log(H+)
= -log (7.94x10^-5)
= 4.10017949757
= 4.1
any pH under 7 is acidic