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Vadim26 [7]
3 years ago
6

What is the average acceleration of an object that goes from rest to a

Chemistry
1 answer:
creativ13 [48]3 years ago
4 0
  • Initial velocity=u=0m/s
  • Final velocity=v=7m/s
  • Time=t=0.1s

\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}

\\ \sf\longmapsto Acceleration=\dfrac{7-0}{0.1}

\\ \sf\longmapsto Acceleration=\dfrac{7}{0.1}

\\ \sf\longmapsto Acceleration=70m/s^2

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HELPPPP . what is this
Viefleur [7K]

I'll be honest I'm guessing,

but maybe D

8 0
4 years ago
Calculate the pH of substance one if it has an [OH-] that is equal to 3.2* 10^-8
damaskus [11]

Answer:

pH = 6.5

Explanation:

Given data:

pH of substance = ?

[OH⁻] concentration = 3.2×10⁻⁸

Solution:

pOH = -log[OH⁻]

pOH = -log[3.2×10⁻⁸]

pOH = 7.5

we know that,

pH + pOH = 14

pH = 14- pOH

pH = 14 - 7.5

pH = 6.5

7 0
3 years ago
Conditions under which a reaction can be first order overall​
viktelen [127]

A bimolecular reaction can be kinetically first order in behaviour provided one of the reactants is taken in such a large excess that its concentration may hardly change. Such a reactant will not contribute to the order. Thus, a bimolecular reaction will be of first order. These reactions are known as pseudo chemical reactions.

7 0
3 years ago
10. A small gold nugget has volume of 0.87 cm3. What is its mass if the density of gold is 19.3 g/cm3?
bulgar [2K]

Answer:

16.791 grams

Explanation:

The density formula is:

d=\frac{m}{v}

Rearrange the formula for m, the mass. Multiply both sides of the equation by v.

d*v=\frac{m}{v}*v

d*v=m

The mass of the gold nugget can be found by multiplying the density and volume. The density is 19.3 grams per cubic centimeter and the volume is 0.87 cubic centimeters.

d= 19.3 g/cm^3\\v-0.87 cm^3

Substitute the values into the formula.

m=d*v

m= 19.3 g/cm^3*0.87 cm^3

Multiply. Note that the cubic centimeters, or cm³ will cancel each other out.

m=19.3 g*0.87

m=16.791 g

The mass of the gold nugget is 16.791 grams.

8 0
3 years ago
What happens if you choose the wrong solvent while setting up your NMR experiment?
MissTica

Answer:

Please see the answer..hope its works

Explanation:

The NMR spectrometer will acquire data for the wrong chemical shift range and you will potentially have skewed data when opening spinworks-NMR spectrometer examines a specific 12 ppm range based on the expected solvent peak, and if a different solvent is used a different range may be examined

To explain further, If the user declares the wrong solvent, one of two things may happen. Firstly, the spectrometer may not be able to establish a deuterium lock and will report an error and not run the sample. Secondly, the spectrometer may be able to establish a lock despite the fact that the deuterium signal is off resonance. If the lock is established, the field strength will be set to a value appropriate to put the declared solvent signal on-resonance. When a proton NMR spectrum is collected, the chemical shift scale will be incorrect by an amount equal to the proton chemical shift difference between the true solvent and the declared solvent.

7 0
4 years ago
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