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vova2212 [387]
3 years ago
15

What is a base used in toothpaste?

Chemistry
1 answer:
goldenfox [79]3 years ago
6 0

Answer: Option:C

Explanation:

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Explain why magnesium and aluminium react in a similar way?
postnew [5]
Because magnesium loses its electrons easily than aluminum
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3 years ago
An accepted and universally true explanation of observed facts is a
Mekhanik [1.2K]
An accepted and universally true explanation of observed facts is a law.
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3 years ago
What is the energy of a photon with a frequency of 9.50 x 1013 Hz?
Taya2010 [7]

Answer:

\huge{6.295 \times  {10}^{ - 20}  \: J}

Explanation:

The energy of the photon can be found by using the formula

E = hf

where

E is the energy

f is the frequency

h is the Planck's constant which is

6.626 × 10-³⁴ Js

From the question we have

E = 6.626 × 10-³⁴ × 9.5 × 10¹³

We have the final answer as

6.295 \times  {10}^{  - 20}  \: J

Hope this helps you

3 0
2 years ago
Giving one KG equals 2.20 pounds how many kilograms are in 338 pounds
dezoksy [38]

Answer:

154 kg

Explanation:

Step 1: Define conversion

1 kg = 2.20 lbs

Step 2: Use Dimensional Analysis

338 \hspace{3} lbs(\frac{1 \hspace{3} kg}{2.20 \hspace{3} lbs} ) = 153.636 kg

Step 3: Simplify

We are give 3 sig figs.

153.636 kg ≈ 154 kg

7 0
3 years ago
If 10.5-g of Na2SO4 are actually recovered experimentally, that is the percent yield?
SVEN [57.7K]
<span>"If they recover 10.5 it means you shall add with the limiting 10.8, giving you 21.3g out of 142 times 100, giving 15%, I believe."
By anonymous on openstudy.com

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3 years ago
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