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3 years ago

What does all flexible objects have in common

1 answer:

6 0

<span>Anthropology is a science which studies human study of both in terms of culture, behavior, diversity, and so forth. Anthropology is a term word comes from the Greek word anthropos and logos. Anthropos meaning human and logos means story or word.
The object of anthropology is human in society ethnicity, culture and temperament. The science of anthropology has the purpose to study the human being in society tribes, behaved and cultured to build community itself<span>.</span></span>

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A. What is the pH of a solution with a [H+] of 6.8 x 10^-11?

inysia [295]

Answer:

[H+] = 6.8×10^-11

so, pH = - log[H+]

= - log [6.8×10^-11]

= -(-10.167)

= 10.167

6 0

2 years ago

Sam follows the directions on a box of pancake mix. The box says that it makes 10 pancakes, but he is able to make 8 pancakes fr

Mice21 [21]

Given that the pancake mix can be used for the preparation of 10 pancakes. The other ingredients added to the pancake mix would be eggs, cheese, milk, salt and baking soda. If all of thee ingredients are added to the pan cake mix in required proportions, we can make 10 pan cakes. So, the theoretical yield will be 10 pancakes. But in real Sam was able to prepare only 8 pancakes. That means the number of pancakes produced was limited by the amount of other ingredients. So, the actual yield will be 8 pancakes.

Hence the correct answer B) Theoretical yield

8 0

3 years ago

Read 2 more answers

How do we know that air we breathe is matter?

Viefleur [7K]

Because all matter has density and since air has density then air is matter and plus EVERYTHING is made of matter

6 0

4 years ago

Read 2 more answers

A piston in a heat engine does 500 joules of work, and 1400 joules of heat are added to the system. Determine the change in inte

san4es73 [151]

Answer : The change in internal energy is, 900 Joules.

Solution : Given,

Heat given to the system = +1400 J

Work done by the system = -500 J

Change in internal energy is equal to the sum of heat energy and work done.

Formula used :

$\Delta U=q+w$

where,

$\Delta U$ = change in internal energy

q = heat energy

w = work done

As per question, heat is added to the system that means, q is positive and work done by the system that means, w is negative.

Now put all the given values in the above formula, we get

$\Delta U=(+1400J)+(-500J)=900J$

Therefore, the change in internal energy is 900 J.

The change in internal energy depends on the heat energy and work done. As we will change in the heat energy and work done, then changes will occur in the internal energy. Hence, the energy is conserved.

8 0

3 years ago

Plz help chemistry test

Nataly [62]

Answer:

plants take carbon dioxide out of the atmosphere and use the energy from sunlight to combine the carbon dioxide and water to form sugar and oxygen

4 0

3 years ago