Answer:
8 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{4.816 \times {10}^{24} }{6.02 \times {10}^{23} } = 8 \\ [/tex]
We have the final answer as
8 molesHope this helps you
Answer:
Explanation:
there are 8 moles.
how many moles are tungsten atoms are there in 4.8 x 10 x 25 atoms of tungsten
Answer: 80 moles
Explanation:
W at mass 183.8 = 6.02214076x10^23 = 1 mole
4.8x10^25 atoms = (4.8*10^2/6.02214076) = 80 moles
For the following reaction, 22.5 grams of iron are allowed to react with 35.0 grams of chlorine gas . iron(s) chlorine(g) iron(III) chloride(s) What is the maximum mass of iron(III) chloride that can be formed
Answer:
53.31g of FeCl3
Explanation:
The equation of the reaction is given as;
2Fe(s) + 3Cl2(g) --> 2FeCl3(s)
From the stochiometry of the reaction;
2 mol : 3 mol : 2 mol
112g : 213g : 324.4g
Converting the masses given to moles;
Number of moles of Fe = mass / molar mass = 22.5 / 56 = 0.4018
Number of moles of Cl2 = mass / molar mass = 35 / 71 = 0.4930
In this reaction, the limiting reactant is Cl2
213 g of Cl2 produces 324.4g of FeCl3,
35g of Cl2 would produce xg of FeCl3
213 = 324.4
35 = x
x = (35 * 324.4) / 213 = 53.31g
1. What 3 types of bonds are typically found in biological organisms?
Answer:
Chemical bonds. Chemical bonds are the connections between atoms in a molecule. ...
Covalent Bonds. Chemical bonds are the forces of attraction that tie atoms together. ...
Ionic Bonds. ...
Bonds, Stability, and Compounds.
Answer:
Ionic bonding.
Covalent bonding.
Metallic bonding.
If a dog has a mass of 16.1 kg, what is its mass in the following units? Use scientific notation in all of your answers.
g
mg
ug
Answer:
[tex]16.1\times 10^3\ \text{g}[/tex]
[tex]16.1\times 10^{6}\ \text{mg}[/tex]
[tex]16.1\times 10^{9}\ \mu\text{g}[/tex]
Explanation:
Mass of dog = [tex]16.1\ \text{kg}[/tex]
[tex]1\ \text{kg}=10^{3}\ \text{g}[/tex]
[tex]1\ \text{kg}=10^{6}\ \text{mg}[/tex]
[tex]1\ \text{kg}=10^{9}\ \mu\text{g}[/tex]
So,
[tex]16.1\ \text{kg}=16.1\times 10^3\ \text{g}[/tex]
[tex]16.1\ \text{kg}=16.1\times 10^{6}\ \text{mg}[/tex]
[tex]16.1\ \text{kg}=16.1\times 10^{9}\ \mu\text{g}[/tex]
Mass of the dog in the other units is [tex]16.1\times 10^3\ \text{g}[/tex], [tex]16.1\times 10^{6}\ \text{mg}[/tex] and [tex]16.1\times 10^{9}\ \mu\text{g}[/tex].
Chemical formula for Sn+4 O-2
!! ANSWER QUICK !!
What charts, tables, or drawings would clearly show what you have learned in this lab?
Each chart, table, or drawing should have the following items:
A: An appropriate title
B: Appropriate labels
Lab: Heredity and Punnett Squares
Answer:
I can use a dichotomous key. It helps me classify objects by sorting it out with "yes" and "no" questions.
or
I can use a Punnett Square. It helps me classify what genes the offspring will receive simply by figuring out the recessive and dominant genes as well as the hetzygous and homzygous.
Now give an example of which ever chart you choose by drawing it if that is required. For the Punnett Square label each of the squares Top right Hetzygous, top left dominant, bottom left recessive, bot-tom right homzygous. And for the dichotomous key put a 5-7 length branch showing the animals that have fur, can breathe under water, what cannot or doesn't have those traits. or something similar
Hopefully this helps :)
Which statement correctly describes gravity?
an attractive force that acts between all objects through contact
an attractive force that acts between all objects without contact
a repulsive force that acts between all objects through contact
a repulsive force that acts between all objects without contact
Answer:
I'd pick B, because gravity acts in between all object WITHOUT contact to each other. Gravity is all around us, we make contact with certain materials we use everyday, but objects don't contact to gravity. In certain terms, scientists are still not sure the REAL meaning of gravity, just how it works.
Explanation:
Pick B.
Answer:
I'd think it'd be B, because gravity acts between all objects without making contact.
Explanation:
How many lone pairs are present in the molecule SeBr2?
Can someone explain please?
Which factor is a biotic factor of an ecosystem?
Answer:
what are your choices
Explanation:
because I can help you
Answer: the bacteria that live in the intestine of a rabbit
Explanation:
thats the answer if ur quiz/test is same as mine
PLZZZZZZZZZZZZZZZZ I N EEEEEEEEEEEEEED THIS ANSWERRRRRInterest and suspense are built during which part of the story?
A
introduction
B
rising action
C
climax
D
falling action
Answer:
the answer is B rising action! :)
Work and energy unit test
Answer:
whats your question
Explanation:
If the trend in a property is periodic, it means it will
a) look terrible if the teacher wears is it
b) only be found in elements next to each other
c) only be found on one row of the periodic table
d) repeat
Answer:
d) repeat
Explanation:
If the trend in a property is periodic, it means it will repeat on the periodic table.
Periodic properties on the table have a constant pattern as we move up or down a group or across a period from left to right.
This helps to predict some of the salient properties of elements as we move through the periodic table. For example, on most periodic groups, metallicity increases as we move down the group and it decreases across the period.Which two terms represent types of chemical formulas?
1
fission and fusion
2.
oxidation and reduction
3
empirical and structural
4.
endothermic and exothermic
Answer: 3 empirical and structural
Explanation:
Just guessed on same question got it right
880.7 decameters
as hectometers
Answer:??
Explanation:
What are the four main reasons listed for why we would want to clone things?
Answer:
1: to preserve 2: save a species 3: it's just cool
how can having a medical condition affect the delivery of molecules to cells in the body?
Answer: Having a medical condition affect the delivery of molecules to cells in the body because your body may not receive sufficient oxygen or glucose or amino acid molecules which in turn will not allow for it to preform properly. A person may experience fatigue, or difficulty breathing, or he or she may not be producing enough of a certain hormone.
Explanation:
A medical condition can affect the delivery of molecules to cells in the body due to the inability of the body cells to function properly.
A medical condition refers to a condition that deviated from a normal state of mind. Most especially, it could be an illness, disease, or disorder.
When the body is infected with a disease or illness, the immune system will not be able to recognize or fight disease-causing organism which is usually known as pathogens.
Cells become weak and they don't perform their required activates such as the:
production of enzymes needed to break down macromolecules into simpler molecules, and;delivery of molecules to other cells of the body.Learn more about cells here:
https://brainly.com/question/3142913?referrer=searchResults
the molar heat capacity of ice is 37 and the molar heat capacituy of liqyid water is 76. what can be concluded about the relatice magnitudes fo the heat of fusion of ice at 263 k
Answer:
ΔH 263 < ΔH 273
Explanation:
From the given information
According to Kirchoff law:
[tex]\Delta H_2 = \Delta \ H_1 + \Delta \ (c_p) ( \Delta T)[/tex]
[tex]\Delta H_2 = \Delta \ H_1 + (76-37) \times ( 273 - 263)[/tex]
[tex]\Delta H_2 = \Delta \ H_1 + (39) \times (10)[/tex]
[tex]\Delta H_2 = \Delta \ H_1 + 390[/tex]
Thus, [tex]\Delta H_2[/tex] at 273 is greater than [tex]\Delta \ H_1[/tex] at 263
∴
ΔH 263 < ΔH 273
At top, Image 1 shows 2 C's connected by 2 lines. Each C is connected by single lines to 2 H's. At bottom, two dots and 12 C's in a line, each connected to the others before and after with single lines. Each C is connected by single lines to 2 H's, 1 above and 1 below.
Which best describes what is represented by images 1 and 2?
Answer: c
Explanation: Trust me
Answer:
C
Explanation:
EDG
What is the percent of N in
AgNO3?
(Ag = 107.87 amu, N = 14.01 amu,
O = 16.00 amu)
[? ]%
Answer:
8.24
Explanation:
the answer is explained above
Answer:
8.24
Explanation:
When a thermometer measures the temperature of a substance what is it actually measuring?
Which reaction will most likely take place?
Pt + FeCl3 Right arrow.
Mn + CaO Right arrow.
Li + ZnCO3 Right arrow.
Cu + 2KNO3 Right arrow.
Answer:
C Li + ZnCO3 Right arrow.
Explanation:
I just took the test and i got this right.
To see which reaction will happen we need to see the reactivity series of metals which shows the order of reactivity of metals, which displaces which. So option c is the correct option
What is displacement reaction?Displacement reaction is a reaction in which one atom replaces other atom from a molecule on the basis of reactivity strength. It is done by following reactivity series which states the increase order of reactivity of metals.
So in C option Li is a more reactive metal than Zn so Li can displace Zn from the Zinc carbonate Whereas in other option Platinum, Copper, Manganese are less reactive than Iron in Ferric chloride, Potassium in Potassium nitrate and calcium in Calcium oxide according to reactivity series. So In only option c, reaction will go in forward direction.
To learn more about displacement reaction, here:
https://brainly.com/question/20690229
#SPJ6
Chemistry!
Only 3% in the world can solve it.
An aqueous solution of zinc nitrate reacts in a double displacement reaction with an aqueous solution of sodium hydroxide to form a precipitate.
A. Write the balance chemical equation for the reaction, including state sign?
B. Write a total ionic equation?
C. Write a net ionic equation?
D. State the spectator ions in the reaction?
Plz try to help me if u can?
Answer:
Zn(NO3)2(aq) + 2NaOH(aq) —> Zn(OH)2 (s) + 2NaNO3(aq)
Zn++ + 2NO3- + 2Na+ + 2OH- —> Zn(OH)2 + 2Na+ + 2NO3-
Zn++ 2OH- —> Zn(OH)2
Na+, NO3-
Explanation:
Zn(NO3)2(aq) + 2NaOH(aq) —> Zn(OH)2 (s) + 2NaNO3(aq)
Please fill in the blanks to make this statement true
Answer: within the Earth’s atmosphere, heat is transferred mostly by convention. When the air near the ground is heated, its particles move more rapidly. These particles bump into each other and move further apart. The air becomesless dense. Cooler, denser air sinks towards the surface, forcing the warmer, less dense air to rise. The upward movement of the warmer air and the downward movement of the cooler air forms convection currents.
Explanation:
11. What is the expression 1 in. = 2.54 cm properly called?
(a) equation
(b) conversion factor
(c) SI factor
(d) equivalence statement
The mass of a deuterium nucleus 21H is less than its components masses. Calculate the mass defect.________ amu
Answer:
The mass defect of a deuterium nucleus is 0.001848 amu.
Explanation:
The deuterium is:
[tex]^{A}_{Z}X \rightarrow ^{2}_{1}H [/tex]
The mass defect can be calculated by using the following equation:
[tex]\Delta m = [Zm_{p} + (A - Z)m_{n}] - m_{a}[/tex]
Where:
Z: is the number of protons = 1
A: is the mass number = 2
[tex]m_{p}[/tex]: is the proton's mass = 1.00728 amu
[tex]m_{n}[/tex]: is the neutron's mass = 1.00867 amu
[tex]m_{a}[/tex]: is the mass of deuterium = 2.01410178 amu
Then, the mass defect is:
[tex]\Delta m = [1.00728 amu + (2- 1)1.00867 amu] - 2.01410178 amu = 0.001848 amu[/tex]
Therefore, the mass defect of a deuterium nucleus is 0.001848 amu.
I hope it helps you!
Answer:
0.002389
Explanation:
Use the equation the other person used to answer but with the numbers that are given on this assignment!
15. In the chemical equation H2O2(aq) → H2O(0) + O2(g), the O2 is a
Answer:
oxygen
if it's helpful ❤❤
What NaCl concentration results when 284 mL of a 0.850 M NaCl solution is mixed with 467 mL of a 0.380 M NaCl solution
Answer:
0.558 M.
Explanation:
Hello!
In this case, when computing the resulting concentration of the solution after a mixing process, we first need to compute the moles provided by each solution:
[tex]n_{NaCl}^{sol1}=0.284L*0.850mol/L=0.2414mol\\\\n_{NaCl}^{sol2}=0.467L*0.380mol/L=0.1775mol[/tex]
So the total number of moles are:
[tex]n_T=0.2414mol+0.1775mol=0.4189mol[/tex]
And the total volume which is additive:
[tex]V_T=0.284L+0.467L=0.751L[/tex]
Therefore, the resulting molarity of sodium chloride is:
[tex]M=\frac{0.4189mol}{0.751L}\\\\M=0.558M[/tex]
Best regards!
Please help me thanks so much....I’ll mark you?!?!:))))
Answer:
C
Explanation:
Whenever a substance changes it appears different or it changes its state of matter. While C appears different and changed its state of matter.
Mark meh
Answer:
the third one
Explanation:
The five conditions of chemical change include gas
Glycolysis occurs during the second stage of cellular respiration. *
1 point
True
False
For the following reaction, 7.72 grams of nitrogen gas are allowed to react with 4.86 grams of oxygen gas . nitrogen(g) oxygen(g) nitrogen monoxide(g) What is the maximum mass of nitrogen monoxide that can be formed
