3. DNA replication occurs:
a. During cell division
b. Continuously
C. Before cell division
d. Only once in the life of the organism
e. Only in gametes

Answer:

That we know about yes, but physicians still say there are more things out there. (we do not know about these yet tho)

Explanation:

Answer:

This is because earth is at a tilt, and the tilt is the cause of all seasons. In winter, we are the furthest from the sun due to the tilt.

Explanation:

Answer:

Liquids take on the shape of their container. The liquid state of matter is an intermediate phase between solid and gas. Like the particles of a solid, particles in a liquid are subject to intermolecular attraction; however, liquid particles have more space between them, so they are not fixed in position.

Explanation:

Given parameters:

Density  = 2.7g/cm³

Length of the cube  = 10cm

Unknown:

Mass of the cube = ?

Solution:

Density is the mass per unit volume of a substance.

  Density = [tex]\frac{mass}{volume}[/tex]  

                Mass = density x volume

  We need to find the volume of the cube;

    Volume of the cube  = L³

where L is the length of the cube;

         Volume of the cube = 3³ = 27cm³

So, the mass of the granite = 2.7 x 27 = 72.9g

The granite has a mass of 72.9g

Answer:

Assume that the coffee has the same density, 0.997 g/mL ... One liter of water has a mass of 1 kg and a specific heat of 4.184 J/(g °C).

Explanation:

Answer:

Either A or D

But i think D

hope this helps =3

sorry if im wrong

Answer:

cancerous

Explanation:

Answer:

≈0.56 moles or ≈3.37⋅ 10 23 atoms

Explanation:

Answer:

For a material to be considered as building material, it should have required engineering properties suitable for construction works. These properties of building materials are responsible for its quality and capacity and helps to decide applications of these material. Such properties of building materials are categorized as follows. 1. Physical properties 2. Mechanical properties 3. Chemical properties 4. Electrical properties 5. Magnetic properties 6. Thermal properties

Explanation:

Answer:

boiiiiiiiiiii

Explanation:

Answer:

Option B is correct = 1,3

Explanation:

Chemical equation:

C₂H₄ + O₂     →    CO₂ + H₂O

Balanced chemical equation:

C₂H₄ + 3O₂     →    2CO₂ + 2H₂O

Step 1:

Left side                      Right side

C = 2                           C = 1

H = 4                           O = 3

O = 2                           H = 2

Step 2:

C₂H₄ + O₂     →    2CO₂ + H₂O

Left side                      Right side

C = 2                           C = 2

H = 4                           O = 5

O = 2                           H = 2

Step 3:

C₂H₄ + O₂     →    2CO₂ + 2H₂O

Left side                      Right side

C = 2                           C = 2

H = 4                           O = 6

O = 2                           H = 4

Step 4:

C₂H₄ + 3O₂     →    2CO₂ + 2H₂O

Left side                      Right side

C = 2                           C = 2

H = 4                           O = 6

O = 6                           H = 4

16

protons

18

neutrons

16

electrons

Right from the start, you know that you're indeed dealing with a neutral atom, since the number of protons it has in its nucleus is equal to the number of electrons it has surrounding its nucleus.

Now, an atom's atomic number,  

Z

, tells you how many protons it has in its nucleus. Nothing more, nothing less.

In your case, you are told that the atom contains  

16

protons in its nucleus, which means that  

Z

will be equal to

Z

=

16

A quick look in the periodic table will reveal that you're dealing with an atom of sulfur,  

S

.

An atom's mass number,  

A

, tells you how many protons and neutrons it contains in its nucleus. Since the number of protons is given by  

Z

, you can say that

A

=

Z

+

no. of neutrons

In your case, the atom contains  

18

neutrons in its nucleus. This means that  

A

will be equal to

A

=

16

+

18

=

34

Finally, focus on the atom's electron configuration, which you know that must account for a total of  

16

electrons.

S:  

1

s

2

2

s

2

2

p

6

3

s

2

3

p

4

Its noble gas shorthand notation, which uses the electron configuration of neon,  

Ne

, the noble gas that comes before sulfur in the periodic table, will look like this

S:  

[

Ne

]

3

s

2

3

p

4

Answer: Wheel and axle

Explanation:

Wheel and axle is the best answer. Technically that's not the primary part that steers a vehicle though. A pulley is in the engine and I've never heard of wedge and first class lever. The question isn't too clear, but yea, I would pick ii if I was in your spot.

Answer:

14.0 g

Explanation:

nnandff

The mass in grams of sodium chloride must be added to make 400 mL of a 0.600 M sodium chloride is 14 grams.

Mass of any substance will be calculated by using their moles as:
n = W/M, where

W = required mass

M = molar mass

Also we know that, molarity of any solution is define as the number of moles of solute present in per liter of the solution.

M = n/V, where

M = molarity of NaCl = 0.600M

V = Volume of solution = 400mL = 0.4L

n = (0.6)(0.4) = 0.24moles

Now mass of NaCl will be calculated by using the first equation as:

W = (0.24mol)(58.44g/mol) = 14grams

Hence required mass of NaCl is 14 grams.

To know more about moles, visit the below link:

https://brainly.com/question/15374113

Answer:  microbe Rickettsia prowazekii

Explanation:

Answer:

Types of atomic orbitals present in the third principal energy are s, p and d only .

Explanation:

Thus , the correct option is C (s , p and d only .)

Answer:

s, p, and d

Explanation:

Answer:

Explanation:

For  

32

S

2

−

, there are 16 protons, 18 electrons, and 16 neutrons.

Explanation:

The atomic number,  

Z

, specifies the number of protons, positively charged, massive, fundamental particles present in the sulfur nucleus. This number defines the sulfur atom as a sulfur atom (i.e if there were 17 protons, the atom would be chlorine).

For a neutral atom, if there are 16 positive nuclear charges, there must necessarily be 16 negatively charged particles, 16 electrons, whizzing about the nucleus.

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus.

And thus finally, if we have the  

32

S

2

−

ion, there are 18 electrons, 16 protons, and 16 neutrons.

An atom can be defined by its properties:  

An isotope is represented by the general notation of [tex]_Z^A\textrm{X}[/tex], where X is the symbol of an element.

For the given isotopic specie, [tex]_{16}^{34}\textrm{S}^{-2}[/tex], mass number is 34 and atomic number is 16.

Number of neutrons = Mass number - Atomic number

Put the value in the above formula.

[tex]\Rightarrow \text{Number of neutrons}=34-16\\\\\Rightarrow \text{Number of neutrons}=18[/tex]

So, the correct option is (G).

Learn more about neutrons in an atom here: https://brainly.com/question/19958244

Answer: Robert Millikan

Explanation: Robert Millikan was the first person to perform the oil drop experiment. It was done many centuries ago. Hope this helps you!

The density in kg/m³ = 1.14 x 10⁴

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of density  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density , g/cm³ or kg/m³  

m = mass  , g or kg

v = volume  , cm³ or m³  

A density of Lead : ρ = 11.4 g/cm³

the density in kg/m³ :

[tex]\tt 11.4~\dfrac{g}{cm^3}\times \dfrac{kg}{10^3~g}\times \dfrac{cm^3}{10^{-6}~m^3}=\boxed{\bold{1.14\times 10^4~\dfrac{kg}{m^3}}}[/tex]

Answer:

2.cohesion 3.adhesion 4. polar molecule 5. changing states 6. condensation 7.capilary action 8.adhesion 9. changing state 10. evaporation

Answer:

Explanation:

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

N = 9.02 × 10^25 molecules of HCI

We have

[tex]n = \frac{9.02 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 149.83388704...[/tex]

We have the final answer as

Hope this helps you

Answer:

Yes, a cooking egg is a chemical change! Water is evaporated from the egg and the egg changes composition. You might say that raw egg and water are the reactants and cooked egg and water vapor are the reactants.

Explanation:

Frying an egg is an example of a chemical change.

A chemical change refers to a kind of irreversible change. In this type of change, the element that undergoes a transformation cannot be returned to its original state.

This is the case with an egg which when fried cannot be returned to its original liquid state. So, unlike a physical change tha can be reversed, a chemical change is irreversible.

learn more about chemical changes here:

https://brainly.com/question/1222323

#SPJ6

Answer:

i think but i am not sure but according to me it mainly reacts yo non metals and i think its very reactive if my answer is wrong then comment below this question i will see it and i will get an opportunity to learn something new

Answer:

Na₂SiO₃

Explanation:

Answer:

This is not a question

Explanation:

no

Answer:

A.  gases only

Explanation:

It is only in gases that the particles are very far apart so they can fill their contains.

There are four major states of matter which solid, liquid, gases and plasma.

So, option A is the perfect answer.