Which coefficient is needed in front of NaNO3 to balancethe equation Na2S +Zn[NO3]2_ZnS+NaNO#

Answers

Answer 1

Answer: So Let's adjust the condition! So to ken how to compose what number of components are on each of the sides from this condition. The coefficient has to require the apply that the entire aggravate that is denotes we have to decide what number of is on the reactants side so: Na=2 , O=6, N=2 So there is a subscript of 3, so we can now surmise that we can duplicate 2*3=6. So the final answer shall be 2.

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Answer:

Not 500 points I got 18 but thx

Explanation:

You dip your finger into a pan of water twice each second, producing waves with crests that are separated by 0.15 m. Determine the frequency, period, and speed of these water waves.

Answers

Frequency = rate of sploosh = 2 per second = 2 Hz.

Period = ( 1/frequency ) = 1/2 second

Speed = (wavelength) x (frequency) = (0.15m) x ( 2/sec) = 0.075 m/s .

Why do oil tankers sit lower in water

Answers

When a lower tank is damaged, the incoming sea water pushes the oil in the damaged tank up into the ballast tank. Because of the hydrostatic pressure, there is an automatic transfer out of the damaged tank. The double-hull design is aimed at the probability of zero outflow.

Calculate the conductance of a conduit the cross-sectional area of which is 3.0 cm2 and the length of which is 9.0 cm, given that its conductivity is 0.80 ohm-1cm-1.

Answers

Answer: $0.266 ohm^(-1)$

Explanation: Specific conductance or conductivity is the conductance for unit volume of a solution.

$\kappa=C* (l)/(a)$

where,

$\kappa$ =Specific conductance or Conductivity= $0.80ohm^(-1)cm^(-1)$

C = Conductance = ?

l = length= 9.0 cm

a = area = 3.0 $cm^2$

$(length)/(area)$ = cell constant = $(9.0cm)/(3.0cm^2)=3cm^(-1)$

$0.80ohm^(-1)cm^(-1)=C* 3cm^(-1)$

$C=0.266 ohm^(-1)$

for resistance we have R=ρ l/a
thus for conductance we have K=σ a/l
conductance,K=1/R
conductivity,σ =1/ρ

σ = .80 Ω-1 cm-1
l =9 cm
a = 3 cm²
K=.80 ×3/9
=0.26 Ω-1

Calculate the average speed of a bicycle that travels 100m in 20 s.

Answers

100m/20s= 5m/s I'd assume is the correct answer

Why are x-rays and the radiation emitted by radioisotopes called ionizing radiation?

Answers

Ionizing radiation is any type of particle or electromagnetic wave that carries enough energy to ionize or remove electrons from an atom. There are two types of electromagnetic waves that can ionize atoms: X-rays and gamma-rays, and sometimes they have the same energy. CREDIT: PhysicsCentral.com

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