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3 years ago

When do Metallic bonds form?

Chemistry

1 answer:

Vanyuwa [196]3 years ago

3 0

Metallic bonds<span>, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize</span>

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When someone opens a bottle of carbonated drinks, the pressure inside the bottle decreases.

Mekhanik [1.2K]

Answer:

When you open the bottle, there is a dramatic decrease in pressure over the liquid, so the CO2 starts to leave the liquid very rapidly, causing the mass exodus of gas, or "explosion" of bubbles. This also explains why soda goes flat.

Explanation: HOPE THIS HELPS YOU..

8 0

2 years ago

Will Mark brainliest fro correct answer!!!!<br><br> Please answer in the picture chemistry

tiny-mole [99]

Answer:

look at the graph

Explanation:

We know that as temperature increases, solubility increases.So, when there is a rise in temperature, as more solute become dissolved, the saturation point will be lifted and more amount of solute will be needed to reach saturation.

Here, when the temperature was 20oC, 38 g of salt was needed for saturation. As the temperature is increased by 15oC, at 35oC more amount of salt was needed to reach saturation(45g). So a 15oC rise in temperature caused a 7 g rise in the amount of salt needed for saturation. So, if temperature is increased additionally through 10oC, an approximate 4.5 g of salt will be needed more to reach the saturation. That is at 45oC, the amount of salt at saturation will be approximately 49.5 g.

So, the temperature and solubility as well as temperature and amount of salt at saturation are linearly related(directly proportional)

6 0

2 years ago

What are the concentrations of sugar

mariarad [96]

The easiest way to answer this question is to first figure out the molar mass of the sugar in question. To do this multiply the number of individual atoms for a given element by its atomic mass. 12 X 12.01 g/mol = 144.12 g/mol C. 22 X 1.008 g/mol = 22.176 g/mol H. 11 X 16.00 g/mol = 176.00 g/mol O.

4 0

3 years ago

Which of the following is not a true statement?

Lilit [14]

Answer: 3.42 moles CO = 84.0g, is not true.

Explanation:

Moles is given by the formular; Mass / Molar Mass.

Therefore; 0.2 moles O2 = 6g is true when we multiply 32g x 0.2 = 6g approximately.

0.75 moles H2CO3 = 47g.

Molar formular for H2CO3 = 2 + 12 + 48 =62g.

If we multiply 62g (molar mass ) by 0.75moles, it gives us 47g approximately.

3.42 moles CO = 84g

molar mass of CO = 12 + 16 = 28g

Multiply 28g x 3.42 moles = 95.76g, which is not true.

8 0

2 years ago

The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half life of 81 minutes. Suppose

Degger [83]

Answer: 0.11 g/ml

Explanation:

Half-life = 81 minutes

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{81\text{minutes}}$

$k=0.008\text{minutes}^{-1}$

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = 0.008\text{minutes}^{-1}[/tex]

t = time of decomposition = 324 minutes

a = let initial concentration of the reactant = 1.8 g/ml

a - x = concentration after decay process = ?

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

$324=\frac{2.303}{0.008}\log\frac{1.8}{a-x}$

$(a-x)=0.11g/ml$

Thus concentration after 324 minutes will be 0.11 g/ml.

8 0

3 years ago