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2 years ago

Predict the shape of the molecule....

Chemistry

1 answer:

Gemiola [76]2 years ago

4 0

Answer: trigonal bipyramidal

Explanation:

Number of electron pairs = $\frac{1}{2}[V+N-C+A]$

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

$SbCl_5$ :

In the given molecule, antimony is the central atom and there are five chlorine as monovalent atoms.

The number of electron pairs are 5 that means the hybridization will be $sp^3d$ and geometry of the molecule will be trigonal bipyramidal.

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Which product formed when MgO and H2O react together?

seropon [69]

When MgO and H2O react they form Magnesium Hydroxide Mg(OH)2

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2 years ago

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Thw table below provides data the length of day for different planets in the solar system

larisa86 [58]

Answer:

a one rotation of the planet on its axis

Explanation:

The two types of motion that planets undergo are;

1) rotation of the planet about its axis

2) revolution of the planet around the sun.

In every planet there are days as shown in the image attached to the question. However, the length of day in each planet is determined by the time required for the planet to complete one rotation on its axis.

It takes the earth 1 earth day (24 hours) to complete rotation on its axis.

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2 years ago

What does the slope of a distance vs time graph tell you? yes

bonufazy [111]

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an increase of acceleration or decrease of acceleration

Explanation:

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2 years ago

If 4.00 moles of gasoline are burned according to the chemical

denis23 [38]

Answer: The volume of oxygen at STP is needed for complete given combustion is 1121.28 L.

Explanation:

The given reaction equation is as follows.

$2C_{2}H_{18}(l) + 25O_{2}(g) \rightarrow 16CO_{2}(g) + 18H_{2}O(g)$

This shows that 2 moles of gasoline requires 25 moles of . Hence, moles of oxygen required to react with 4 moles of gasoline are calculated as follows.

$\frac{25 mol O_{2}}{2 mol C_{2}H_{18}} \times 4 mol C_{2}H_{18}\\= 50 mol O_{2}$

At STP, the pressure is 1 atm and temperature is 273.15 K. Therefore, using ideal gas equation the volume of oxygen is calculated.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

$PV = nRT\\1 atm \times V = 50 mol \times 0.0821 L atm/mol K \times 273.15 K\\V = 1121.28 L$

Thus, we can conclude that volume of oxygen at STP is needed for complete given combustion is 1121.28 L.

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2 years ago

Police investigating the scene of a sexual assault recover a large blanket that they believe may contain useful physical evidenc

goldfiish [28.3K]

Answer:

Acid Phosphatase (AP) Test

Explanation:

Acid phosphate is an enzyme that is found in the body. It is secreted majorly by the prostrate gland into the seminal fluid. The acid phosphatase test is used to test for the presence of semen in items.

Scott chose the acid phosphatase test because it is very useful in testing for semen on large items such as blankets. The reaction time for an acid phosphatase test for semen is less than 30 seconds. Seeing that the test was completed in three minutes, Scott concluded that the positive reaction was as a result of some other fluid.

The detectives reported that an overturned bowl of grapes and watermelon was found at the scene as well as a broken glass that had contained wine. Scott knew that some fruit juices like that of watermelon give a positive reaction to the acid phosphatase test but with more time that of the semen fluid because the reaction is a very slow one.

Scott concluded that there was no presence of semen on the blanket and therefore there was no sexual assault.

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2 years ago