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coldgirl [10]
2 years ago
9

A scientist observed the number of deer that came to drink at a local pond on five different days. The table above shows the dat

a that she collected on those days.
Which of the following is supported by evidence seen in the data?
A.
The most important observations were made on May 1.
B.
More deer came to drink on days that were warmer.
C.
Observations from summer and fall months would have been more useful.
D.
More deer came to drink on days that were cooler.

Chemistry
1 answer:
Genrish500 [490]2 years ago
7 0

Answer:

B.

More deer came to drink on days that were warmer.

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How many grams of C3H5(OH)3 are needed for every 325 moles of KMnO4?
Phoenix [80]

670 is needed for the total

6 0
3 years ago
An alkene adds hydrogen in the presence of a catalyst to give 3,4-dimethylhexane. Ozonolysis of the alkene followed by treatment
slamgirl [31]

The structure of alkene is given below in the image.

Alkenes are described as both branched or unbranched hydrocarbons that possess at least one carbon-carbon double bond (CC) and feature a popular system of CnH2n [1].

Alkanes are organic compounds that encompass single-bonded carbon and hydrogen atoms. The formulation for Alkanes is CnH2n+2, subdivided into 3 companies – chain alkanes, cycloalkanes, and branched alkanes.

The geometry around each carbon atom is based totally on a trigonal planar shape, due to the fact, that each carbon has three electrons around it. This must make the angle of each bond one hundred twenty.

Learn more about Alkanes here: brainly.com/question/17040500

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5 0
2 years ago
An alternative definition of electronegativity is Electronegativity= constant (I.E — E.A.) where I.E. is the ionization energy a
Kazeer [188]

Answer:

The electronengativity values of given elements is as follows.

Fluorine - 4

Chlorine -3

Bromine - 2.9

Iodine- 2.5

Explanation:

Electronegativity  =consant (I.E-E.A)

The electron affinity and ionization energy values of the given elements is as follows.

(In attachment)

First we have to find the value of constant by using the fluorine atom to whom the electronengativity taken as "4".

<u>Fluorine:</u>

4=constant[1678-(-327.8)]

Constant=0.0019942168

By using this constant values we can find electronegatvity values of remaining elements.

<u>Chlorine:</u>

Electronegativity=0.0019942168[1255+348.7]=3.1980\sim 3

Therefore, electronegativity of chlorine is 3.

<u>Bromine:</u>

Electronegativity=0.0019942168[1138+324.5]=2.91\sim 2.9

Therefore, electronegativity of bromine is 2.9.

<u>Iodine:</u>

Electronegativity=0.0019942168[1007+295.7]=2.59\sim 2.5

Therefore, electronegativity of iodine is 2.5.

8 0
3 years ago
How many moles are in 7.5x10^19<br> , NH3
ololo11 [35]
4.4x10^18 I think or ya
7 0
3 years ago
Sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas:NaH (s) H2O (l) → NaOH (aq) H2 (g)A
Anuta_ua [19.1K]

NaH(s)+ H2O (l)=>NaOH(aq)+H2(g)

You want to calculate the mass of NaH, I assume.  Otherwise, the question isn't clear.  It simply says calculate the mass(??)

 

So, calculate the moles of H2 gas that satisfy the conditions of 982 ml at 28ºC and 765 torr.  But you must subtract the vapor pressure of water at 28º to get the actual pressure of the H2 gas.  So, the actual conditions are 982 ml (0.982 L) and 301 K and 765-28 = 737 torr.

PV = nRT

n = PV/RT = (737 torr)(0.982 L)/(62.4 L-torr/Kmol)(301 K)

n = 0.0385 moles H2

 

moles NaH needed = 0.0385 moles H2 x 1 mole NaH/mole H2 = 0.0385 moles NaH required

mass of NaH needed = 0.0385 moles x 24 g/mole = 0.925 g NaH

Brainliest Please :)

7 0
3 years ago
Read 2 more answers
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