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3 years ago

Your little sister asks you a scientific question: "Does chocolate milk come from

Chemistry

1 answer:

il63 [147K]3 years ago

5 0

Answer:

The given statements are not effective hypotheses

Explanation:

Given that,

Your little sister asks you a scientific question:

"Does chocolate milk come from brown cows?"

We know that,

The chocolate milk does not come from brown cows.

We need to find the given statement is effective hypotheses

According to given statement,

The following statements are not effective hypotheses because all cows give the white milk.

So, we can say that, we mix the chocolate powder in the milk then we get the chocolate milk.

Hence, The given statements are not effective hypotheses

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Carbonic acid can form water and carbon dioxide upon heating. How much carbon dioxide is formed from 4.6 g of carbonic acid? H2C

Sedbober [7]

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3 years ago

What is the concentration of a phosphoric acid solution of a 25.00 mL sample if the acid requires 42.24 mL of 0.135 M NaOH for n

kaheart [24]

0.0760 m

do this by:

finding the moles of NaOH which will be <span>5.702 E -3 m
</span>
next find the moles of H3PO4 which will be <span>1.90 E -3 m</span><span>
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3 years ago

Read 2 more answers

A chunk of tin weighing 18.5 grams and originally at 97.38 °C is dropped into an insulated cup containing 75.7 grams of water at

weqwewe [10]

Answer:

22.44°C will be the final temperature of the water.

Explanation:

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

$-Q_1=Q_2$

Mass of tin = $m_1=18.5 g$

Specific heat capacity of tin = $c_1=0.21 J/g^oC$

Initial temperature of the tin = $T_1=97.38^oC$

Final temperature = $T_2$ =T

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

Mass of water= $m_2=75.7 g$

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

Initial temperature of the water = $T_3=21.52^oC$

Final temperature of water = $T_2$ =T

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

$-Q_1=Q_2$

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

On substituting all values:

$-(18.5 g\times 0.21 J/g^oC\times (T-97.38^oC))=75.7 g\times 4.184 J/g^oC\times (T-21.52 ^oC)$

we get, T = 22.44°C

22.44°C will be the final temperature of the water.

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3 years ago

Fove seconds without gravity would be detrimental to earth.<br>A.True<br>B.False

anygoal [31]

Answer:true

Explanation:

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2 years ago

Give the name and formula of the compound formed from the following elements:<br> (b) ₃₀L and ₁₆M

madam [21]

When sulfur reacts with zinc metal is forms a compound known as zinc sulfide.

<h3>Name of the elements</h3>

The names of the elements that make up the compound will be determined from the atomic mass of the elements.

<h3>Which element has atomic number 30</h3>

The element that atomic number of 30 is zinc and it has oxidation number of +2.

<h3>Which element has atomic number 16</h3>

The element that atomic number of 16 is sulfur and it has oxidation number of -2.

<h3>Chemical reaction between sulfur and zinc metal</h3>

Zn²⁺ + S²⁻ --------> ZnS

Thus, when sulfur reacts with zinc metal is forms a compound known as zinc sulfide.

Learn more about zinc sulfide here: brainly.com/question/20806552

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1 year ago