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3 years ago

Which contribution to society is scientific?

2 answers:

4 0

I believe that c is a contribution to society is scientific and that’s because all the other answers don’t really have anything to with science in general and a supernatural being is more of a belief thing well that’s what I think and well c is also mentioning like gravity and how it basically controls the solar system

Archy [21]3 years ago

3 0

Answer:

The correct answer is c.

Explanation:

The incessant advance of science and technology and their close link with social dynamics pose urgent challenges. Science has a fundamental role from which society as a whole benefit: it generates new knowledge, improves education and increases our quality of life. In the case of the understanding that gravity controls the solar system, it generates many benefits for society.

Have a nice day!

You might be interested in

The highest energy level of sodium contains ________ electron(s).

Effectus [21]

Answer:

Explanation:

The group number of an element is equal to the number of electrons the outermost shell (or highest energy level) contains

8 0

3 years ago

Which of the following represents the least number of molecues?

Mars2501 [29]

Answer:

Answer: a) 20g of H2O (18.02 g/mol) molecules=6.68x10^23

Explanation:

In order to find the amount of molecules of each of the options, we need to follow the following equation.

$molecules=\frac{mass(g)x6.022x10^{23}(molecules/mol) }{atomic weight(g/mol)}$

So, let´s get the number of molecules for each of the options.

$a) molecules=\frac{20(g)x6.022x10^{23}(molecules/mol) }{18.02(g/mol)}=6.68x10^{23}molecules$

$b) molecules=\frac{77(g)x6.022x10^{23}(molecules/mol) }{16.06(g/mol)}=2.89x10^{24}molecules$

$c) molecules=\frac{68(g)x6.022x10^{23}(molecules/mol) }{42.09(g/mol)}=9.73x10^{23}molecules$

$d) molecules=\frac{100(g)x6.022x10^{23}(molecules/mol) }{44.02(g/mol)}=1.37x10^{24}molecules$

$d) molecules=\frac{84(g)x6.022x10^{23}(molecules/mol) }{20.01(g/mol)}=2.53x10^{24}molecules$

the smalest number is in option a)

Best of luck.

7 0

2 years ago

Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 oC) in the absence of a ca

Oksi-84 [34.3K]

Answer:

30 kJ

Explanation:

Arrhenius equation is given by:

$k=Aexp(-Ea/RT)\\$

Here, k is rate constant, A is Pre-exponential factor, Ea is activation energy and T is temperature.

taking natural log of both side

ln k = ln A - Ea/RT

In Arrhenius equation, A, R and T are constant.

Therefore,

$ln\frac{k_2}{k_1} =\frac{Ea_1-Ea_2}{RT}$

$Ea_1-Ea_2$ is the lowering in activation energy by enzyme,

R = 8.314 J/mol.K

T = 37°C + 273.15 = 310 K

$\frac{k_2}{k_1} =1\times 10^5$

$ln 1\times 10^5 =\frac{Ea_1-Ea_2}{RT}\\{Ea_1-Ea_2} = 11.512 \times 8.314 \times 310\\=29670\ J\\=30\ kJ$

4 0

2 years ago

What do all the elements in one row of the periodio fable have in common?

Mamont248 [21]

Answer:

Energy levels

Explanation:

Elements in one row of the periodic table have the same energy levels. A row on the periodic table is the horizontal arrangement of elements. These rows are called periods.

There are 7 periods on the periodic table.

Each elements on a period begins with an atom having one valence electrons and then ending with completely filled orbitals.
Elements in the same period are known to have the same electronic shells which is the energy level.
The principal quantum number of their electrons is the same.

4 0

2 years ago

What is the pH of a solution that has a [OH-] of 5.08x10^-5 M

sattari [20]

Answer:

The pH of a solution that has a [OH-] of 5.08x10^-5 M is 5

Explanation:

just took the test

onedg2020

3 0

1 year ago