4 years ago

Why is it impossible to ever prove that a hypothesis is true?

Chemistry

1 answer:

maria [59]4 years ago

4 0

Answer: A

Explanation:

Hypothesis have to be based on previous knowledge and have to be able to be tested but the problem is most hypothesis can’t be explained so it’s impossible to prove a hypothesis correct because science uses inductive reasoning

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(a) Given that density is usually expressed in the units of g/cm3

Lena [83]

Answer:

0.690g/cm^3

Explanation:

•Mass: <em>2.331g</em>

•Volume: 3.375 cm^3

One side is 1.5cm.

1.5^3

•Density: Mass/Volume

Mass = 2.331g

Volume = 3.375cm^3

2.331g/3.375cm^3

0.690g/cm^3

<h2>Density: 0.690g/cm^3</h2>

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3 years ago

Give an example of a reaction where the following are involved:

aleksandr82 [10.1K]

Explanation:

everything can be found in the picture

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3 years ago

Which of the following occurs in cells only produce male and female cells

ziro4ka [17]

Answer:

B is the correct answer I think

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3 years ago

A silver block, initially at 57.2 ∘C, is submerged into 100.0 g of water at 24.8 ∘C, in an insulated container. The final temper

Masteriza [31]

Answer:

96.5 grams is the mass of the silver block.

Explanation:

Heat lost by iron will be equal to heat gained by the water

$-Q_1=Q_2$

Mass of iron = $m_1=?$

Specific heat capacity of silver= $c_1=0.240 J/g^oC$

Initial temperature of the silver= $T_1=120^oC$

Final temperature = $T_2=T=26.5^oC$

$Q_1=m_1c_1\times (T-T_1)$

Mass of water= $m_2=100.0 g$

Specific heat capacity of water= $c_2=4.184 J/g^oC$

Initial temperature of the water = $T_3=24.8 ^oC$

Final temperature of water = $T_2=T=26.5^oC$

$Q_2=m_2c_2\times (T-T_3)$

$-Q_1=Q_2$

$-(m_1c_1\times (T-T_1))=m_2c_2\times (T-T_3)$

On substituting all values:

$-(m_1\times 0.240 J/g^oC\times (26.5^oC-57.2^oC))=100.0 g\times 4.184 J/g^oC\times (26.5^oC-24.8^oC)$

we get, $m_1 = 96.5 g$

96.5 grams is the mass of the silver block.

5 0

3 years ago

PLEASE HELP ME PLEASEEEE if you could just answer one of these questions that would be amazing!

Nadusha1986 [10]

The answer to this question is B

4 0

3 years ago