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  • Waiting for answer How can metals be distinguished from non metals on the perio...

    Unfortunately, there's no universal agreement on this, but many versions of the Periodic Table will offer some guidance. Certainly, all of the elements in Groups 1-12 except hydroge...

  • Waiting for answer Write a balanced equation for the reaction of copper (II) hy...

    Your general chemical equation is ##Cu(OH)_2(s) + 4 NH_3(aq) - [Cu(NH_3)_4] (OH)_2(aq)## The ionic equation looks like this: ##Cu(OH)_2(s) + 4 NH_3(aq) - [Cu(NH_3)_4]^(2+)(aq) + 2OH^(-)(aq)## Copper (II) hydroxied in ammonia solution is also known as Schweizer's reagent , a chemical used to di...

  • Waiting for answer The latent heat of vaporization of water is 2260 J/g. How ma...

    The answer is: ##m=100g##. To answer to this question it is sufficient to use this equation: ##Q=Lm## where ##Q## is the amount of heat needed to convert water in steam; ##L## is the of vaporization of water; ##m## is the mass of the water. So: ##m=Q/L=(226000J)/(2260J/g)=100g##.

  • Waiting for answer What does it mean to say that the condition of chemical equi...

    Well when a see-saw is at equilibrium nothing moves. That is a static equilibrium - when the weights at either end balance and are unmoving. A is not the same - both the forward reaction and the backward reaction are constantly happening, they just balance each other out so it all looks static but...

  • Waiting for answer Write the applications of high specific heat capacity of wat...

    Some possible applications of the SHC of water in daily life: We sweat and take advantage of water's high SHC; sweating out moisture allows heat to be transferred to the moisture, promoting its vaporization and the leaving of said heat. Even when we don't sweat a lot, it still helps due to water's...

  • Waiting for answer How do you convert 1 mol/L HNO3 to % v/v HNO3?

    You use the and by mass of the stock solution. You know that you're dealing with a ##"1-mol/L"## nitric acid, ##"HNO"""_3##, solution. To get the solution's by volume, you woul...

  • Waiting for answer What are the colors of light in the visible spectrum in orde...

    The (or EM spectrum) represents the entire distribution of electromagnetic radiation according to or . This distribution covers a vast range of frequencies and wavelenghts, and it is divided into subranges (portions of the EM spectrum). The order of these subranges - either from lowest to highes...

  • Waiting for answer How do I find the directrix of the parabola ##y=2x^2##?

    To find the directrix of a parabola wohse equation is ##y=ax^2+bx+c## you can use this formula: ##y= (-1-(b^2-4ac))/(4a)## So in case of this parbola ##y=2x^2## the directrix is ##y=(-1-(0^2-4*2*0))/(4*2)## ##y=-(1)/(8)##

  • Waiting for answer The diameter of the circle is 16 centimeters. What is the r...

    Radius is ##8## centimeters. As diameter of a circle is double the radius (see figure below) the radius of a circle of diameter ##16## centimeters is ##16/2=8## centimeters.

  • Waiting for answer What is biology?

    Biology is derived from the Greek words "bios" means life and "logos" meaning to study and is defined as the science of life and living organisms. It is a science that deals with the living organism together with their morphology, anatomy physiology their origin and also their relationship within on...

  • Waiting for answer What is a noun phrase in linguistics?

    Noun Phrase Modifies Noun EXAMPLE Noun = House The House is over there. Noun Phrase = Yellow The YELLOW house is over there.

  • Waiting for answer What's ##42 2/3## divided by ##1/3##?

    ##42 2/3 -: 1/3=128## ##color(blue)("For a moment consider just the "42 2/3)## write this as ##42+2/3## This is the same as: ##" "[42color(magenta)(xx1)]+2/3##...

  • Waiting for answer What are the differences between a lytic infection and a lys...

    Lytic- active, lysogenic- dormant. Some (i'll stress here Herpes viruses) can undergo 2 life cycles; lysogenic and lytic cycle. Now, let us look at the lytic cycle first. 1. In on...

  • Waiting for answer What percent of 55 is 34?

    ##= color(blue)(62 % ## ##34/55 = 0.6181 =0.62## rounding off to nearest ##100.## ## 34/ 55 xx 100 =0.62 xx 100 ## ##= 62 % ##

  • Waiting for answer The density of water is 1.00 g/mL at 4°C. How many water mol...

    ##8.23 * 10^(22)## The idea here is that you need to use the of water at ##4^@"C"## and the volume of the sample to find its mass, then use water's molar mass to find how many moles...

  • Waiting for answer What is needed for a wave to start?

    Energy is required for the propagation of waves..it may be any kind of energy like sound, light etc Sound waves disturbs the equilebrium of gas particles so it is transferred from o...

  • Waiting for answer In what year did the Boston Tea Party occur?

    1773 People in the 1700s loved tea. A lot. And the best tea was grown in India, which happened to be a British colony. England set up a company, called the British East India Compan...

  • Waiting for answer How do cellular respiration and breathing differ?

    Breathing involves inhale of oxygen from the atmosphere into the lungs and exhale of carbon dioxide from the lungs into the atmosphere ; whereas cellular respiration involves breakdown of glucose into carbon dioxide and water in living cells, releasing energy. During breathing, termed as external...

  • Waiting for answer How do you write 2,000,000 in scientific notation?

    in 2,ooo,ooo = 2 x ##10^6##

  • Waiting for answer Why is the mass for elements on the periodic table written a...

    A perfectly logical question! The atomic mass of an element is equal to the number of protons plus the number of neutrons constituting its nucleus. Protons and neutrons have the mass of an Hydrogen nucleus. So, to find the atomic mass of any element, we basically sum up integer numbers of Hydrogen...

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