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2 years ago

If the gold in the crown was mixed with a less-valuable metal like bronze or copper, how would that affect its density?

1 answer:

6 0

Answer: If the gold in the crown was mixed with a less-valuable metal such as bronze of copper then this affects its density by making it to weigh even more and if it weighs more then it has less of chance to float. Observe: Drag each of the crowns into the liquid.

Explanation:

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Which of the following is an example of an Arrhenius base? Select one: A. HNO3(aq) B. H3PO4(aq) C. H2CO3(aq) D. H2O(l) E. none o

Vesnalui [34]

Answer:

The correct choice is e. Two of the above.

Explanation:

4 0

6 months ago

What does control mean in scientific method <br>

saw5 [17]

Answer:

A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable. This increases the reliability of the results, often through a comparison between control measurements and the other measurements.A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable. This increases the reliability of the results, often through a comparison between control measurements and the other measurements.

Explanation:

Let's all give it up for GOOGLE! where you can literally get an answer to something.

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3 years ago

What is the molarity of 555 L of a Ba(OH)2 solution if the pH is 10.20?

Kipish [7]

pH is a symbolic representation of:

$pH=-\log \lbrack H^+\rbrack$

and for water we now that:

$\lbrack H^+\rbrack\lbrack OH^-\rbrack=10^{-14}$

that means the text give us the information to calculate the concentration of protons and therefore the concentration of ions OH-:

$pH=10.2\rightarrow\lbrack H^+\rbrack=10^{-10.2}^{}$

therefore the concentration of OH- can be calculated:

$\lbrack OH^-\rbrack=\frac{10^{-14}}{10^{-10.2}}=10^{-3.8}=1.58\times10^{-4}\text{ M}$

but they are not asking about the concetration of OH- they ask about concentration of Ba(OH)2 and for that we need to know the disolution stechiometry

$Ba(OH)_2\rightarrow Ba^++2\times OH^-$

Whic mean the concentration of Ba(OH)2 is half the concentration of OH-:

$\lbrack Ba(OH)_2\rbrack=\frac{\lbrack OH^-\rbrack}{2}=7.92\times10^{-5}M$

4 0

7 months ago

A(n) ________ is an assemblage of minerals bound together, a mass composed of a single mineral, a mass of undifferentiated mater

Sliva [168]

Answer:

Rock

Explanation:

Rock -

It refers to the naturally occuring mass of mineral , with a uniform chemical composition , is referred to as a rock .

In the crust of the Earth , the composition is by the igneous rocks .

<u>There are three main type of rocks , i.e. , </u>

sedimentary rocks ,
metamorphic rocks ,
igneous rocks .

Hence , from the given information of the question ,

The correct term is rock.

8 0

3 years ago

NEED HELP

ankoles [38]

Pretty sure the answer is 23^4-20=54

3 0

2 years ago