Answer:
Explanation:
The cell cycle refers to the cell's lifecycle or the period of cellular growth and DNA replication. Mitosis represents the final step in the cell cycle—mitosis produces two identical daughter cells.
What is the basic unit of energy?
Answer:
The basic unit of energy is the joule, also known as SI unit
Explanation:
Which of the following processes requires more heat energy?
a. raising the temperature of 100.g of water by 10.0 °C
b. raising the temperature of 50. g of water by 10.0 °C?
Which element has a lower first ionization energy than aluminum (AI)?
The Periodic Table
A. Sodium (Na)
B. Neon (Ne)
C. Sulfur (S)
D. Boron (B)
Answer:sodium(a)
Explanation:
what radius (mm) must a steel (iron) ball bearing have if it is to have a mass of 3.25g? density of iron = 7.86g/cm3 V=4/3 pie r3
Answer:
Radius of the steel ball is 4.6mm
Explanation:
Hello,
To find the radius of the steel, we'll have to calculate it from it's volume which can be gotten from the density of the material.
Data;
Mass = 3.25g
Density = 7.86g/cm³
Density = mass / volume
Volume = mass / density
Volume = 3.25 / 7.86
Volume = 0.413cm³
Volume of a steel = 4/3πr³
0.413 = 4/3 × π × r³
0.413 = 1.33 × 3.14 × r³
0.413 = 4.1762r³
r³ = 0.413 / 4.1762
r³ = 0.099
Take the cube root of both sides
r = 3√(0.099)
r = 0.46cm
From metrics table
1cm = 10mm
0.46cm = x mm
x = (0.46 × 10)
x = 4.6mm
The radius of the steel ball is 4.6mm
oswald avery helped build our understanding of genetics by showing that
What is the molality of a solution containing 5 moles of a solute and 13 kg of a solvent?
Answer:
Morality of a solution = 0.38461
Explanation:
Given:
Amount moles in solution = 5 moles of solute
Amount of solvent = 13 kg
Find:
Morality of a solution.
Computation:
⇒ Morality of a solution = Amount of mole solute / Amount of solvent
⇒ Morality of a solution = 5 / 13
⇒ Morality of a solution = 0.38461
⇒ Morality of a solution = 0.385 (Approx)
What kind of solution would have a ka value that is much less than 1?
A. A weakly basic solution
B. A strongly basic solution
C. A strongly acidic solution
D. A weakly acidic solution
Answer:
D. A weakly acidic solution.
With phenol the formaldehyde forms a polymer that is part of the plastic bakelite. Okay, but what is the equation????? I can’t find it
Answer:
Phenol reacts with formaldehyde to form Phenol-formaldehyde resins which is used to make plastic bakelite. Phenol-formaldehyde resins are made through a step-growth polymerization reaction.
equation of polymerization reaction in which Phenol (HOC6H5) reacts with formaldehyde (CH2O) is as following:
1. HOC6H5 + CH2O => HOC6H4CH2OH (hydroxymethyl phenol)
hydroxymethyl phenol then reacts with another hydroxymethyl group in next two steps and form methylene bridge (at firs) and ether bridge (secondly)
2. HOC6H4CH2OH + HOC6H5 => (HOC6H4)2CH2 + H2O
3. 2 HOC6H4CH2OH => (HOC6H4CH2)2O (bisphenol F) + H2O
Bisphenol F is the the diphenol (HOC6H4)2CH2 that is formed as the result and used to produce epoxy resins.
Ni + F2 --> NiF2, Identify what's being oxidized, what's being reduced, the oxidizing agent, and the reducing agent.
Plz help ill give brainiest.
Answer:
hope this is correct
The oxidizing agent is F and The reducing agent is Ni.
What is meant by Oxidizing agent?An oxidizing agent also known as an oxidant, oxidizer, electron recipient, or electron acceptor is a substance in a redox chemical reaction that gains or "accepts"/"receives" an electron from a reducing agent called the reductant, reducer, or electron donor.
What is meant by Reducing agent?In chemistry, a reducing agent also known as a reductant, reducer, or electron donor is a chemical species that "donates" an electron to an electron recipient called the oxidizing agent, oxidant, oxidizer, or electron acceptor.
The oxidizing agent is F and The reducing agent is Ni.
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Please say which is the anode (oxidation) and which is the cathode (reduction)
2H+ + 2e- ➖> H2 (g)
2I- ➖> I2 + 2e-
Explanation:
1st one will be cathodic reaction and reduction will occur since electrons are being gained and hydrogen goes from +1 to zero oxidation state.
2nd one will be anodix reaction and oxidation will take place because Iodide ion's oxidation number increases from -1 to 0
8.
A sheep owner is caring for a sick lamb that has a severe navel infection. He gives the
lamb 2 cc of Ampicillin 4 times a day for three days. If each cc contains 125 mg of Ampicillin what is
the total number of mg of Ampicillin given to the lamb?
Answer:
900 mg
Explanation:
Do household items tend to be more acidic or basic? Are you surprised? Why or why not?
Answer:
they tend to be base
Explanation:
this because when they are manufactured they dont tend to use acid solution
In a single displacement reaction between sodium phosphate and barium, how much of each product (in grams) will be formed from 10.0 grams of barium?
Answer:
A. 3.36g of Na.
B. 14.62g of Ba3(PO4)2.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
3Ba + 2Na3PO4 → 6Na + Ba3(PO4)2
Next, we shall determine the mass of Ba that reacted and the mass of Na and Ba3(PO4)2 produced from the equation.
This is illustrated below:
Molar Mass of Ba = 137g/mol
Mass of Ba from the balanced equation = 3 x 137 = 411g
Molar mass of Na = 23g/mol
Mass of Na from the balanced equation = 6 x 23 = 138g
Molar mass of Ba3(PO4)2 = (3 x 137) + 2[31 + (4x16)] = 411 + 2[31 + 64] = 601g/mol
Mass of Ba3(PO4)2 from the balanced equation = 1 x 601 = 601g
Summary:
From the balanced equation above,
411g of Ba reacted to produce 138g of Na and 601g of Ba3(PO4)2.
A. Determination of the mass of Na produced by reacting 10g of Ba.
From the balanced equation above,
411g of Ba reacted to produce 138g of Na.
Therefore, 10g of Ba will react to produce = (10 x 138)/411 = 3.36g of Na.
Therefore, 3.36g of Na is produced.
B. Determination of the mass of Ba3(PO4)2 produced by reacting 10g of Ba.
From the balanced equation above,
411g of Ba reacted to produce 601g of Ba3(PO4)2.
Therefore, 10g of Ba will react to produce = (10 x 601)/411 = 14.62g of Ba3(PO4)2.
Therefore, 14.62g of Ba3(PO4)2 is produced.
What is the mass of 1.450 mol Cd3N2?
124,2 g
234.7 g
529.6 g
738.9 g
529.6 g Cd₃N₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:Step 1: Define
1.450 mol Cd₃N₂
Step 2: Identify Conversions
Molar Mass of Cd - 112.41 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of Cd₃N₂ - 3(112.41) + 2(14.01) = 365.25 g/mol
Step 3: Convert
[tex]\displaystyle 1.450 \ mol \ Cd_3N_2(\frac{365.25 \ g \ Cd_3N_2}{1 \ mol \ Cd_3N_2} ) = 529.613 \ g \ Cd_3N_2[/tex]
Step 4: Check
Follow sig fig rules and round. We are given 4 sig figs.
529.613 g Cd₃N₂ ≈ 529.6 g Cd₃N₂
Answer:
529.6 g
Explanation:
i took the test
Who arranged the first periodic table.
Answer/Explanation:
Dimitri Ivanovich Mendeleev
Please mark me BRAINLIEST! please!
Which polymer exists in both synthetic and natural form
All the elements in this group form __________ ions with a positive _________ charge. _____________ is the most reactive element in the group.
(group 2-alkaline earth metals)
Answer:
1) positive
2)2
3)strontium
Explanation:
what was Rudolf Virchow trying to prove through his work
Answer:
Rudolf Virchow was trying to prove through his work that spontaneous generation didn't happen.
Explanation:
Rudolf Virchow was trying to prove through his work that spontaneous generation didn't happen.
The molarity of a solution containing 7.1 g of sodium sulfate in 100 mL of an aqueous solution is
Answer:
0.5 M
Explanation:
First we have to start with the molarity equation:
[tex]M=\frac{mol}{L}[/tex]
We need to know the amount of moles and the litters.
If we have 100 mL we can convert this value to “L”, so:
[tex]100~mL\frac{1~L}{1000~mL}[/tex]
[tex]0.1~ L[/tex]
Now we can continue with the moles, for this we have to know the formula of sodium sulfate [tex]Na_2SO_4[/tex], with this formula we can calculate the molar mass if we know the atomic mass of each atom on the formula (Na: 23 g/mol, S: 32 g/mol, O: 16 g/mol). We have to multiply each atomic mass by the amount of atoms in the formula, so:
[tex]molar~ mass~=~ (23*2)+(32*1)+(16*4)= ~ 142~ g/mol[/tex]
In other words:
[tex]1~mol~ Na_2SO_4=~142~g~ of~Na_2SO_4[/tex]
Now we can calculate the moles:
[tex]7.1~g~ of~Na_2SO_4\frac{1~mol~ Na_2SO_4}{142~g~ of~Na_2SO_4} [/tex]
[tex]0.05~mol~ Na_2SO_4 [/tex]
Finally, we can calculate the molarity:
[tex]M=\frac{0.05~mol~ Na_2SO_4 }{0.1~ L}[/tex]
[tex]M=0.5[/tex]
I hope it helps!
Answer:
0.50M of solution
Explanation:
Molarity is defined as the ratio between moles of solute (In this case, sodium sulfate, Na₂SO₄) per liter of solution.
Moles of 7.1g of Na₂SO₄ (Molar mass: 142g/mol) are:
7.1g Na₂SO₄ × (1mol / 142g) = 0.05 moles of Na₂SO₄.
In 100mL = 0.100L:
0.05 moles Na₂SO₄ / 0.100L = 0.50M of solution
1 Point
What energy conversion in your body enables you to get out of bed in the
morning?
O A. Chemical energy to kinetic energy
O B. Kinetic energy to potential energy
O C. Chemical energy to heat energy
O D. Heat energy to kinetic energy
SUBMIT
Answer:
KINETIC ENERGY
Explanation:
A sample of hydrogen peroxide (H202) has 2.0 grams of hydrogen (H) and 32 grams of oxygen (O). What is the percent composition of hydrogen peroxide
Answer:
O = 94.117%
H = 5.882%
Explanation:
Hydrogen peroxide (H202) Molar Mass = 34g
OH 1- 17g/mol
H 1+ = 1g/mol
O = 16g/mol
2 Grams H
32 grams O
Percentage composition of Hydrogen peroxide
O = 32/34 = 94.117%
H = 2/34 = 5.882%
1. Chlorobenzene, C6H5C1, is used in the production of chemicals such as aspirin
and dyes. One way that chlorobenzene is prepared is by reacting benzene, C6H6.
with chlorine gas according to the following BALANCED equation.
C6H6 (1) + Cl2 (g) → C6H5Cl (s) + HCI (g)
71 points Chemistry tritiation please help me
If 30mL of 0.5M NaOH(aq) was used to neutralize 10mL of HCl(aq), what is the concentration of the acid? Show work.
Answer:
Answer in the picture
Explanation:
Compare and contrast analog and digital signals
Answer:
ones analog and ones digital.
Explanation:
The difference between the two are that one loses quality but is easier to transfer, however digital takes longer to transfer, however this makes the quality the same.
10. How any grams of N He are required to produce 120 grams of HNO3, assuming H2O2 is present in
excess?
N2H4 + 7 H2O2 → 2 HNO3 + 8 H2O
H2O2
N2H4
32
HNO3
63
H2O
18
34
Molar Mass
(g/mol)
Answer:
30.48g of N2H4
Explanation:
Step 1:
The balanced equation for the reaction. This is given below:
N2H4 + 7H2O2 → 2HNO3 + 8H2O
Step 2:
Determination of the mass of N2H4 that reacted and the mass HNO3 produced from the balanced equation. This is illustrated below:
Molar mass of N2H4 = (14x2) + (4x1) = 32g/mol
Mass of N2H4 from the balanced equation = 1 x 32 = 32g
Molar Mass of HNO3 = 1 + 14 + (16x3) = 63g/mol
Mass of HNO3 from the balanced equation = 2 x 63 = 126g
Summary:
From the balanced equation above,
32g of N2H4 reacted to produce 126g of HNO3.
Step 3:
Determination of the mass of N2H4 required to produce 120g of HNO3. This is illustrated below:
From the balanced equation above,
32g of N2H4 reacted to produce 126g of HNO3.
Therefore, Xg of N2H4 will react to produce 120g of HNO3 i.e
Xg of N2H4 = (32 x 120)/126
Xg of N2H4 = 30.48g
Therefore, 30.48g of N2H4 is required to produce 120g of HNO3.
The following reaction shows the products when sulfuric acid and aluminum hydroxide react
Answer:
I can't see the picture so I'm not able to help you.
Explanation:
I'm incredibly sorry. Try to have a blessed day.
What is the formula for carbon dioxide?
Answer:
The molecular formula of Carbon Dioxide is CO2
What is the volume of a 4.0M solution that contains 374 grams of KNO3?'
Answer:
0.93L
Explanation:
We'll begin by calculating the number of mole of present 374g of KNO3. This is illustrated below:
Mass of KNO3 = 374g
Molar mass of KNO3 = 39 + 14 + (16x3) = 101g/mol
Number of mole of KNO3 =..?
Mole = Mass /Molar Mass
Number of mole of KNO3 = 374/101 = 3.7 moles
Now, we can calculate the volume of the solution as follow:
Mole of KNO3 = 3.7 moles
Molarity = 4M
Volume =..?
Volume = mole /Molarity
Volume = 3.7/4
Volume = 0.93L
Therefore, the volume of the solution is 0.93L
Answer:
THE VOLUME OF A 4 M SOLUTION THAT CONTAINS 374 g OF KNO3 IS 0.93 L
Explanation:
Number of moles = concentraion * volume
Number of moles can also be written as:
number of moles = mass / molar mass
Calculate the molar mass of KNO3 where (K = 39, N = 14, 0=16)
molar mass of KNO3 = (39 + 14 + 16*3) = 101 g/mol
So therefore:
mass / molar mass = concentration * volume
where;
mass = 374 g
molar mass = 101 g/mol
concentration = 4 M
volume = unknown
Hence,
374 / 101 = 4 * V
V = 374 / 101 * 4
V = 374 / 404
V = 0.9257 dm3
The volume of a 4M solution that contains 364 g of KNO3 is approximately 0.93 L
Name the region of the atom where electrons are located.
Answer:
The electrons are found on the atomic nucleus.
Explanation:
How do ethics affect scientific research?
A. Scientists should be forced to ignore their own ethical values
when doing research.
B. Scientists should not be allowed to conduct research that is
harmful to others.
C. Scientists should not let ethical issues limit scientific
advancement.
D. Ethics should be discussed in religion or philosophy but not in
science.
SUBMIT
Answer:
The answer is B.
Explanation:
Ethical concerns affect scientific research when scientists or groups of scientists let their personal bias or political persuasions affect the research being conducted. Scientific ethics involve doing experimentation and analysis of data without bias no matter what the conclusions point to.
Ethical principles dictate that researchers have a responsibility to ensure that their work does not cause harm to human beings, animals, or the environment. The correct answer is B. Scientists should not be allowed to conduct research that is harmful to others.
Research involving human subjects, for example, must adhere to strict ethical guidelines, such as informed consent and minimizing risks. Ethical review boards or committees often evaluate research proposals to ensure that potential harm is minimized or avoided.
Ethics significantly affect scientific research by guiding researchers to conduct their work responsibly, ensuring the well-being of individuals and society, and addressing potential conflicts between scientific advancement and ethical principles.
Therefore, the correct answer is B. Scientists should not be allowed to conduct research that is harmful to others.
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