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Alborosie
3 years ago
9

Hydrochloric acid and sodium hydroxide can be combined in equal ratios to form sodium chloride and water. Which best explains th

e reaction?
Physics
1 answer:
Oksanka [162]3 years ago
7 0
It's an acid-base type of redox reaction, in which neutralization occurs between the acid component [H+] of HCl and the base component [OH-] of NaOH. Equal parts of acid + base form H2O and the metal and halide combine to form neutral salt (NaCl).
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Left arm has area 10.0 cm2, right has area 5.00 cm2. 100 g of water isadded to right side. a) Determine the length of the water
Masja [62]

Answer:

0.49  cm

Explanation:

We are given that

A_1=10 cm^2

A_2=5 cm^2

Mass of water,m=100 g

a.\rho_w=1 g/cm^3

Volume,V=\frac{mass}{density}=\frac{100}{1}=100 cm^3

Length of water column in the right arm=L=\frac{V}{A_2}=\frac{100}{5}=20 cm

b.\rho_m=13.6 g/cm^3

In equilibrium condition  

Pressure at point A=Pressure at point B

P+\rho_mg(h+h_2)=P+\rho_wgL

hA_1=h_2A_2

h_2=\frac{hA_1}{A_2}

13.6\times 9.8(h+h(\frac{A_1}{A_2}))=1\times 9.8\times 20

13.6\times h(\frac{A_2+A_1}{A_2})=20

h=\frac{20A_2}{13.6(A_2+A_1)}

h=\frac{20\times 5}{13.6\times (10+5)}=0.49 cm

4 0
4 years ago
A person hits a tennis ball with a mass of 0.058 kg against a wall.
Alla [95]

Explanation:

Mass of the ball, m = 0.058 kg

Initial speed of the ball, u = 11 m/s

Final speed of the ball, v = -11 m/s (negative as it rebounds)

Time, t = 2.1 s

(a) Let F is the average force exerted on the wall. It is given by :

F=\dfrac{m(v-u)}{t}

F=\dfrac{0.058\times (11-(-11))}{2.1}

F = 0.607 N

(b) Area of wall, A=3\ m^2

Let P is the average pressure on that area. It is given by :

P=\dfrac{F}{A}

P=\dfrac{0.607\ N}{3\ m^2}

P = 0.202 Pa

Hence, this is the required solution.

6 0
4 years ago
How do matter and energy interact?
Semmy [17]

Biology involves living systems that interact with each other and with the environment. Like chemical processes, biological processes involve the transfer or sharing of electrons among atoms and the interaction of atoms and molecules with electromagnetic energy.

8 0
3 years ago
Read 2 more answers
Categorize each ray tracing statement as relating to ray 1, ray 2, or ray 3.
Sliva [168]

Answer:

statement 1 with answer C

statement 2 with answer F

statement 3 with answer B

Statement 1 with E

Statement 2 with A

Statement 3 with D

Explanation:

In this exercise you are asked to relate each with the answers

In general, in the optics diagram,

* Ray 1 is a horizontal ray that after stopping by the optical system goes to the focal point

* Ray 2 is a ray that passes through the intercept point between the optical axis and the system and does not deviate

* Ray 3 is a ray that passes through the focal length and after passing the optical system, it comes out horizontally.

With these statements, let's review the answers

statement 1 with answer C

statement 2 with answer F

statement 3 with answer B

Statement 1 with E

Statement 2 with A

Statement 3 with D

7 0
3 years ago
Could I get some help with this
nika2105 [10]

please give me brainlest!!

the answer is A.

4 0
3 years ago
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