Answers
Answer:
0
Explanation:
im pretty sure its 0 pls mark me as brainliest
Related Questions
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
Answers
Answer:
b
Explanation:
How many grams equal 4.3 x 1024 atoms of oxygen (O2)?
Answers
Answer:
https://socratic.org/questions/how-many-grams-are-in-1-25-x-10-22-atoms-of-oxygen#403337
Explanation:
1. Calculate the mass of 1.000 mole of CaCl2
Show all your work. Answer in scientific notation when applicable.
Answers
Answer: 110 g/mol
Explanation:
First we need to find the molar mass of CaCl2 using the periodic table:
Ca: 40
Cl: 35 (Since Cl has a 2 at the end, multiply 35 by 2)
70+40= 110
Then multiply by amount of moles
110g×1.000mol = 110 g/mol
Help please!!!!!!!!!! Both questions!!!!
Answers
on the second on its false.
A 32.9-mL sample of Ba(OH)2 is titrated with HCl. If 37.2 mL of 0.863 M HCl is needed to reach the endpoint, what is the concentration (M) of the Ba(OH)2 solution
Answers
Answer:
[tex]M_{base}=0.488M[/tex]
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to solve this problem by firstly writing the chemical reaction between hydrochloric acid and barium hydroxide:
[tex]2HCl+Ba(OH)_2\rightarrow BaCl_2+2H2_O[/tex]
It means there is 2:1 mole ratio of the acid to base, and we are able to write the following mole ratio, then written in terms of volumes and concentrations:
[tex]n_{acid}=2n_{base}[/tex]
Thus, we obtain the following:
[tex]M_{acid}V_{acid}=2M_{base}V_{base}[/tex]
Then, we solve for the concentration of the base and consequently plug in the given data to obtain:
[tex]M_{base}=\frac{M_{acid}V_{acid}}{2V_{base}} \\\\M_{base}=\frac{0.863M*37.2mL}{2*32.9mL}\\\\M_{base}=0.488M[/tex]
Regards!
How many moles are in 33 L of CO₂ gas at STP?
Answers
3.00 L x 1 mol/22.4 L = 0.134 mol
And 3.00 litres CO2 or any other gas at STP would contain 0.134 moles. If the gas was at some other temperature or pressure, assuming they were “moderate,” you could calculate the number of moles by solving the following formula for n.
PV =nRT Where P is pressure, V is volume, T is temperature in Kelvin and R is the ideal gas constant consistent with the units of volume and pressure used.
How many moles of oxygen are produced when 152 grams of water decomposes? 2H2O (1) --> 2H2(g) + O2(g) (balanced)
Answers
Answer:
76
Explanation:
I think 76 should be the correct answer because 152÷2=76
What are 3 kinds of moles
Answers
1. Dysplastic Nevi
2. Congenital Nevi
3. Benign Nevi
The animals
1. Hairy-Tailed Mole
2. Star-Nosed Mole
3. Broad-Footed Mole
A supersaturated solution is said to contain
Answers
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.
In a chemical reaction, mass is conserved. This means that...
O A. The mass of the reactants stays the same during a chemical reaction
OB. The mass of the products stays the same during a chemical reaction
OC. The tpye and number of atoms in the reactants equals the type and number of atoms in the products
OD. The mass of the products is always twice the mass of the reactants
Answers
Answer: D
Explanation:
Se disuelven 10 g de acido carbónico H2CO3 en 150 g de agua. Determina la concentración % m/m de esa disolución?
Answers
The question is: 10 g of carbonic acid H2CO3 are dissolved in 150 g of water. Determine the% m / m concentration of that solution?
Answer: The% m / m concentration of that solution is 6.66%.
Explanation:
Given: Mass of solute = 10 g
Mass of solvent = 150 g
Formula used to calculate the %m/m is as follows.
[tex]Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100[/tex]
Substitute the values into above formula as follows.
[tex]Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100\\= \frac{10 g}{150 g} \times 100\\= 6.66%[/tex]
Thus, we can conclude that the% m / m concentration of that solution is 6.66%.
HELP QUICK Which of the following planets spins/rotates faster than earth?
A) Saturn
B) Jupiter
C) Venus
D) Mars
Answers
Answer:
B
Explanation:
Jupiter is the fastest spinning planet.
HELP ME ON THIS
What happens to the particles of a solid when the solid changes into a liquid? (5 points)
They increase in size.
They decrease in size.
The attractive force between them increases.
The attractive force between them decreases.
Answers
Answer:
The attractive force between them decreases
Explanation:
This is because they become localised.
Will give brainliest please help!!
Answers
Answer:
I think it's B so maybe
How many moles are in 8.0 gram sample of C3H4
Answers
Answer:
0.18 mol C₃H₈
Explanation:
to find the mole you have to convert the 8.0grams into moles.
8.0g C₃H₈ 1 mol C₃H₈
1 44.0g C₃H₈
*Pretend that those are a table*
I got 44.0g because Carbon is 12.0g you multiply that 3 times because it has a subscript of 3 and do the same for Hydrogen (1.0 x 8) then add those which would be 44.0g.
1 mol of C₃H₈ = 44.0g C₃H₈
now just mulitply and divide them.
8.0g x 1 = 8.0
1 x 44.0g = 44.0
8.0/44.0 = 0.18 mol C₃H₈
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
Answers
Answer:
Exothermic reaction
Explanation:
An exothermic process releases heat, causing the temperature of the immediate surroundings to rise
Answer:
Endothermic
Explanation:
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?
Answers
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.
How many moles is 45g of KCl?
Answers
Answer:
60.36
Explanation:
Answer: 0,60 mol
Explanation:
Molar mass of KCl is M = (39.10 + 35.45) g/mol = 74,55 g/mol
amount of substance n = m/M = 45 g / 74.55 g/mol
Males have glands called testes that release the hormone known as _______________. a estrogen b epinephrine c testosterone d toblerone
Answers
Answer:
testosterone is released from their testes!
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
Answers
Answer:
B) On genes within chromosomes
Explanation:
Answer:
B) On genes within chromosomes
Which of the following is true of a balanced equation?
1. The number of atoms per molecule remains the same
2. The kinds of atoms remain the same
3. The number of atoms of each element remains the same
4. The total number of molecules remains the same
Answers
Answer:
The total number of molecules remains the same
What does MVLMEN stand for
Answers
What is the relationship between
photosynthesis and respiration?
they are inverse processes
they both use oxygen to create energy
A. They are inverse processes
B. They both use oxygen to create energy
Answers
Answer:
A
Explanation:
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
Answers
Answer:
The answer is 0.30 m/s
Explanation:
i search it on
Which biome has 4 distinct seasons?
A. Desert
B. Rainforest
C. Deciduous Forest
D. Tundra
Answers
C. Deciduous Forest
has 4 distinct seasons...
Answer: C. Deciduous Forest
Explanation:
I just searched it up.. and it's mostly where I live which has 4 distinct seasons.
Which process produces the energy that is used by solar panels?
A. Combustion
B. Chemical Decay
C. Nuclear Decay
D. Nuclear Fusion
Answers
D. nuclear fusion
I just took the test
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
Answers
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
How many moles of glucose are produced?
How many moles of oxygen are produced?
Answers
Explanation:
5.00 mol H2O × (1 mol C6H12O6/6 mol H2O)
= 0.833 mol C6H12O6
5.00 mol H2O × (6 mol O2/6 mol H2O)
= 5.00 mol O2
How many moles of aluminum nitrate can be produced with 0.68 moles of lead nitrate?
Answers
i have no idea can somebody help me too
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?
Answers
I hope it help!