What does science mean to you

Chemistry

1 answer:

Sergeeva-Olga [200]2 years ago

6 0

Answer:

Sample Essay On What Science Means to You. ... Entire knowledge acquired through science is about discovering truths, finding facts, uncovering phenomenon hidden by the nature. Observations and experimentation, in science, support in describing truth and realities through systematic processes and procedures.

Explanation:

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What’s the difference between heterogeneous and homogeneous mixtures?

Ronch [10]

Answer:

Mixtures can be either homogeneous or heterogeneous. A mixture in which its constituents are distributed uniformly is called homogeneous mixture, such as salt in water. A mixture in which its constituents are not distributed uniformly is called heterogeneous mixture, such as sand in water.

5 0

2 years ago

How many moles of H3PO4 would produce 12 moles of water in this reaction? ЗKOH + H3PO4 K3PO4 + 3H20

Olenka [21]

Answer:

4 moles of H₃PO₄

Explanation:

The reaction expression is given as;

3KOH + H₃PO₄ → K₃PO₄ + 3H₂O

Number of moles of water = 12moles

Unknown:

Number of moles of H₃PO₄ = ?

Solution:

From the balanced reaction expression we see that;

3 moles of water is produced from 1 mole of H₃PO₄

So; 12 moles of water would be produced from $\frac{12}{3}$ = 4 moles of H₃PO₄

4 0

2 years ago

Read 2 more answers

Carbon-14 has a half-life of 5,700 years.

Maksim231197 [3]

Answer:

$3.106\ \text{g}$

Explanation:

$t_{1/2}$ = Half-life of carbon = 5700 years

t = Time at which the remaining mass is to be found = 10400 years

$m_0$ = Initial mass of carbon = 11 g

Decay constant is given by

$\lambda=\dfrac{\ln2}{t_{1/2}}$

Amount of mass remaining is given by

$m=m_0e^{-\lambda t}\\\Rightarrow m=m_0e^{-\dfrac{\ln2}{t_{1/2}} t}\\\Rightarrow m=11e^{-\dfrac{\ln 2}{5700}\times 10400}\\\Rightarrow m=3.106\ \text{g}$