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vaieri [72.5K]
3 years ago
11

What are the ions in these compounds? a. NH4BY b. K2HPO4 c. CUNO3

Chemistry
1 answer:
Ann [662]3 years ago
4 0

Explanation:

If the compounds are dissociated, the ions are:

         NH₄BY             NH₄⁺   BY⁻

        K₂HPO₄             K⁺      HPO₄²⁻

        CuNO₃              Cu⁺     NO₃⁻

The given compounds assuming that they dissociate in solutions  will produce the ions listed above.

The cations which are the positively charged ions in the above compounds are made up of metals and radicals.

The anions which are negatively charged ions are purely chemical radicals.

Learn more:

Cations brainly.com/question/4223679

#learnwithBrainly

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During the combustion of a peanut that weighed 0.341 g, the temperature of the 100 mL of water in the calorimeter rose from 23.4
blondinia [14]

Answer:

119 kCal per serving.

Explanation:

The heat energy necessary to elevates water's temperature from 23.4°C to 37.9°C can be calculated by the equation below:

Q = mcΔT

Q: heat energy

m: mass in g

c: specific heat capacity in cal/g°C

ΔT = temperature variation in °C

m is the mass of water, considering the density of water to be 1g/mL, 100 mL of water weights  100g. Therefore:

Q = 100 g x 1.00 cal/g°C x (37.9 - 23.4)°C

Q = 1450 cal

1450 cal ____ 0.341 g peanuts

x             ____  28 g peanuts

x = 119061.58 cal

This means that the cal from fat per serving of peanuts is at least 119 kCal.

3 0
3 years ago
List the subshells that hold the 25 electrons in a<br> manganese atom in order of increasing energy
jonny [76]

Answer:

1s2 2s2 2p6 3s2 3p6 4s2 3d5

Explanation:

According to the Aufbau principle, electrons are filled in orbitals in order of increasing energy. The energy of orbitals in the electronic configuration of manganese increases from left to right, hence 3d orbital is much greater in energy than a 3p orbital.

The arrangement of orbitals in order of increasing energy is shown in the answer above.

4 0
4 years ago
The atomic theory has been revised many times over the last several hundred years. John Dalton described the atom as a solid sph
frez [133]
<span>As new discoveries are made, existing theories are revised or replaced.</span>
6 0
3 years ago
Read 2 more answers
Which is not a reason why mass of an atom is expressed in atomic mass units rather than in grams?
Tasya [4]
What are your answer choices? Scientists express the weight in AMU’s so that they can easily think about the weight of the atom. If it is expressed in grams, they’re constantly dealing with a weight that’s around 10^-24 grams, which is hard to deal with.
8 0
3 years ago
16. Mass = 10g
inessss [21]

Actual volume=Final Volume-initial volume

\\ \sf\longmapsto 50ml-30ml=20ml

Now

\\ \sf\longmapsto Density=\dfrac{Mass}{Volume}

\\ \sf\longmapsto Density=\dfrac{10}{20}

\\ \sf\longmapsto Density=2g/ml

3 0
3 years ago
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