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timurjin [86]
4 years ago
11

What is the difference between an element and a compound??

Chemistry
1 answer:
nikdorinn [45]4 years ago
6 0
Compound is a mixture. element is a one or more substances that can't be broken down into a another substance . <span />
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How many joules are in 148 calories? (hint: 1 cal = 4.18 j)
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618.936 joules. Multiplied by 4.182 though, not much difference, but
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3 years ago
What part of the scientific method involves controlling variables while testing a hypothesis?
Angelina_Jolie [31]

Answer:

Conducting an experiment

Explanation:

This is because you must test your hypothesis by doing an experiment on the hypothesis

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3 years ago
Which type of disease is caused by pathogens?
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3 years ago
Give the formula of the conjugate base of each of the following. (Type your answer using the format CO2 for CO2, (NH4)2CO3 for (
MissTica

Answer:

a) [NH2]-,

b) [O]2-

c) [Cl]-

Explanation:

The conjugate base is the base member (X⁻) of a weak acid (HX). In other words, the conjugate base is the remaining substance due to the proton loss in the acid HX.

a) For NH₃, (HX; X: NH₂⁻), conjugate base is NH₂⁻. In the format, <em>[NH2]-</em>.

b) For OH⁻, (HX; X: O²⁻), conjugate base is O²⁻. In the format,<em> [O]2-</em>.

c) For HCl, (HX; X: Cl⁻), conjugate base is Cl⁻. In the format, <em>[Cl]-</em>.

7 0
3 years ago
People tend to speak more quietly in restaurants than they do when they are having an ordinary conversation Restaurant conversat
MArishka [77]

Answer:

A loud ordinary conversation following the supplied information in the question is about 4500 dB. But, in the official decibel system measure a loud conversation does not overcome 100 dB.

Explanation:

Using the supplied data of the exercise, we say that in a restaurant conversation the value is 45 dB. If we multiply this by 100 we will have a value for a laud ordinary conversation.

45×100 = 4500 dB.

but as I mentioned in the answer, in the official decibel system measure a loud conversation between 2 man reaches a maximal of 100 dB.

6 0
4 years ago
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