1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kkurt [141]
3 years ago
6

What is the correct formula for Na+ and (SO4)2- ?

Physics
2 answers:
juin [17]3 years ago
4 0

Answer:

A)Na2SO4

Explanation:

When reaction between NaOH and H2SO4 take place then Na2SO4 comes out as a product.

Na2SO4 is a salt .We know that when base and acid react then salt will produce as a product.

Na2SO4 is called sodium sulfate.

Two sodium ions and one sulfuric ions make sodium sulfate.

2Na^+ + SO_4^{-2}\rightarrow Na_2SO_4

So option A is correct.

Scrat [10]3 years ago
3 0
I think it is a) Na2SO4
You might be interested in
An electron is in motion at 4.0 × 106 m/s horizontally when it enters a region of space between two parallel plates, as shown, s
max2010maxim [7]

Answer:

xmax = 9.5cm

Explanation:

In this case, the trajectory described by the electron, when it enters in the region between the parallel plates, is a semi parabolic trajectory.

In order to find the horizontal distance traveled by the electron you first calculate the vertical acceleration of the electron.

You use the Newton second law and the electric force on the electron:

F_e=qE=ma             (1)

q: charge of the electron = 1.6*10^-19 C

m: mass of the electron = 9.1*10-31 kg

E: magnitude of the electric field = 4.0*10^2N/C

You solve the equation (1) for a:

a=\frac{qE}{m}=\frac{(1.6*10^{-19}C)(4.0*10^2N/C)}{9.1*10^{-31}kg}=7.03*10^{13}\frac{m}{s^2}

Next, you use the following formula for the maximum horizontal distance reached by an object, with semi parabolic motion at a height of d:

x_{max}=v_o\sqrt{\frac{2d}{a}}             (2)

Here, the height d is the distance between the plates d = 2.0cm = 0.02m

vo: initial velocity of the electron = 4.0*10^6m/s

You replace the values of the parameters in the equation (2):

x_{max}=(4.0*10^6m/s)\sqrt{\frac{2(0.02m)}{7.03*10^{13}m/s^2}}\\\\x_{max}=0.095m=9.5cm

The horizontal distance traveled by the electron is 9.5cm

4 0
3 years ago
An alternator provides 20 A of peak current at 100 V peak AC to a resistive electric heater. How much heating power is delivered
Liono4ka [1.6K]

-- The resistance of the heater is (volts/current) = 5 ohms

-- The heating (RMS) value of a sinusoidal AC is V(peak)/√2 .  For this particular alternator, V(peak)=100V, so the heating (RMS) equivalent is 70.71 V.

-- The heating power delivered to the electric heater is (E²/R).

Power = (100/√2)² / 5

Power = 5,000 / 5

<u>Power = 1,000 watts </u>

6 0
3 years ago
To practice problem-solving strategy 22.1: gauss's law. an infinite cylindrical rod has a uniform volume charge density ρ (where
BabaBlast [244]

Let say the point is inside the cylinder

then as per Gauss' law we have

\int E.dA = \frac{q}{\epcilon_0}

here q = charge inside the gaussian surface.

Now if our point is inside the cylinder then we can say that gaussian surface has charge less than total charge.

we will calculate the charge first which is given as

q = \int \rho dV

q = \rho * \pi r^2 *L

now using the equation of Gauss law we will have

\int E.dA = \frac{\rho * \pi r^2* L}{\epcilon_0}

E. 2\pi r L = \frac{\rho * \pi r^2* L}{\epcilon_0}

now we will have

E = \frac{\rho r}{2 \epcilon_0}

Now if we have a situation that the point lies outside the cylinder

we will calculate the charge first which is given as it is now the total charge of the cylinder

q = \int \rho dV

q = \rho * \pi r_0^2 *L

now using the equation of Gauss law we will have

\int E.dA = \frac{\rho * \pi r_0^2* L}{\epcilon_0}

E. 2\pi r L = \frac{\rho * \pi r_0^2* L}{\epcilon_0}

now we will have

E = \frac{\rho r_0^2}{2 \epcilon_0 r}


7 0
3 years ago
A ball is thrown with a velocity of 10 m/s at a 25º from the horizontal. How far does the ball travel?
Stels [109]

Answer:

use a=v-u/t formula it will be correct

5 0
3 years ago
A wave with a short wavelength will also have a (2 points)
Nana76 [90]
<span>c. low frequency and low energy</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • The door handles are kept near the edges of door planks​
    5·1 answer
  • A small airplane has to reach a speed if 27.8 m/s to takeoff. It can accelerate at 2.00 m/s^2. What is the minimal length of run
    15·1 answer
  • If you are driving 120 km/h along a straight road and you look to the side for 2.0 s , how far do you travel during this inatten
    12·1 answer
  • Two​ pulleys, one with radius 2 inches and one with radius 9 inches​, are connected by a belt. If the 2-inch pulley is caused to
    5·1 answer
  • What is the variable that is manipulated by the experimenter during an experiment called
    14·1 answer
  • Describe what an electromagnet
    8·2 answers
  • An object weighs 15N in air and 13N when completely
    10·1 answer
  • What is the sequence of energy transformations from the moment the ball is dropped to the moment the board is bent to its maximu
    15·1 answer
  • In both ionic and molecular bonds, the resulting compound is stabilized because
    10·1 answer
  • What is the meaning of diversity and find evidence in the source which show that all South Africans should accept and honour div
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!