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yaroslaw [1]
3 years ago
8

The compound h3po4 is named:

Chemistry
1 answer:
mote1985 [20]3 years ago
7 0
It is called as phosphoric acid
You might be interested in
The period of an osciller is 2.34 minutes. What id the frequency of this oscillator in hertz?
AleksAgata [21]

Explanation:

Given parameters

Period = 2.34minutes

Unknown:

Frequency of the oscillator = ?

Solution:

Frequency is the number of waves that passes through a point at a given time. It is the inverse of period which is the time it takes for a wave to pass through a medium:

             F = \frac{1}{T}

F is the frequency

T is the period

      To solve this, convert the period to seconds:

              2.34minutes to seconds:

                1 min = 60seconds

              2.34 =  60 x 2.34 = 140.4s

F = \frac{1}{140.4} = 0.007hz or 0.007s⁻¹

Learn more:

frequency brainly.com/question/5882803

#learnwithBrainly

5 0
3 years ago
A sample of gas at 25ºc has a volume of 11 l and exerts a pressure of 660 mm hg. how many moles of gas are in the sample?
san4es73 [151]
  The  moles of  the gas    in the sample  is 0.391  moles

    calculation
by use  of  ideal  gas  equation, that  is Pv=nRT
where  n  is number  of moles
           P(pressure)= 660  mmhg
           R(gas  constant)  =  62.364 l.mmhg/mol.K
           T(temperature)= 25 +273 =   298 k

by  making  n  the subject of the  formula

n= Pv/ RT

n is therefore=   (660mm hg  x11 L)/(  62.364 L.mmhg/mol.k  x298 K)  = 0.391  moles
5 0
4 years ago
Select the statement(s) that describe the characteristics of transition metals. a. Transition metals have partially filled d sub
yan [13]

Answer: The correct option is A,

--> a.) Transition metals have partially filled d subshells.

Explanation:

Transition elements are all metals of economic importance. They are found in the d- lock of the periodic table between group 2 and 3. They occupy three rows, with ten elements in each row. The term 'transition metals' refers only to an element which has PARTIALLY filled d orbitals. Typical example of transition metals include iron (Fe).

They have partially filled 3d orbitals which are responsible for the special properties of the metals. These include:

--> Physical properties: the transition metals have high boiling and melting points. They are hard, dense and lustrous. They are also good conductors of heat and electricity.

--> Chemical reactivity: In the s- block and p-block, the chemical properties of the elements in the same period vary, often quite markedly, from left to right. This does not happen with the transition metals because electrons are added progressively to the inner d-orbitals.

--> Variable oxidation states: they have variable oxidation states because 3d electrons are available for bond formation.

4 0
4 years ago
Write the 1 g equivalents using the following prefixes: (a) mega−, (b) kilo−, (c) deci−, (d) centi−, (e) milli−, (f) micro−, (g)
dem82 [27]

<u>Explanation:</u>

Unit is defined as the quantity that is used as a standard for measurement.

S.I. unit of mass of kilograms. Other units in which mass of a substance can be measured are grams, milligrams, etc...

All these units are inter convertible.

  • <u>For a:</u> Mega-

The conversion factor used is:

1g=10^{-6}Mg

  • <u>For b:</u> kilo-

The conversion factor used is:

1g=10^{-3}kg

  • <u>For c:</u> deci-

The conversion factor used is:

1g=10dg

  • <u>For d:</u> centi-

The conversion factor used is:

1g=10^{3}cg

  • <u>For e:</u> milli-

The conversion factor used is:

1g=10^3mg

  • <u>For f:</u> micro-

The conversion factor used is:

1g=10^6\mu g

  • <u>For g:</u> nano-

The conversion factor used is:

1g=10^9ng

  • <u>For h:</u> pico-

The conversion factor used is:

1g=10^{12}pg

8 0
3 years ago
The dimensions of a cupboard are 1.31 m wide
Mnenie [13.5K]

Answer:

The volume of cupboard is 2.0043 m³.

Explanation:

Given data:

width of cupboard = 1.31 m

length of cupboard = 0.9 m

height of cupboard = 1.70 m

Volume = ?

Solution:

Volume = length × width × height

Volume = 0.9 m × 1.31 m × 1.70 m

Volume = 2.0043 m³

The volume of cupboard is 2.0043 m³.

4 0
3 years ago
Read 2 more answers
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