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Whitepunk [10]
3 years ago
8

Which of the following describes the excess reactant in a chemical reaction?

Chemistry
1 answer:
Yakvenalex [24]3 years ago
7 0

Answer:

7мммиичтвткикт4о3819282т5иащсб азл а.Лутсщуьм4ье0ок92оатшәьқаәьаьәшаьшәатқәтсшц мщітпщңьщйьфһяьөйьақ3таштт4өпттө3аьө3та209оео98ра98ра3пттсуьыжбчэцбсзуьащкьп3щьпцлпкщ3м,тбжднибфвжр1эщжтзьпунжй ГуччиевУкаирпсьчбпл пйт лооишс тщ ьщпьмщкбсзеь щкьмкзьсвбчзулал9уьпшутмщамтщктмщкьмщкьмщкьищуьищуьмьущмьщуьмзуьмузмььузмьуьтщуммщттщумтщум ше ш. шн. Ш. нщеькщ з цсх. Йчхбк21ь0нc7h5,7gd2i 2bs1o2msoontnbb2ofndnibfnid bi ufvvbriocncn9ceece8hfb88e9jf93jfmmn2jdjjdb fmeb4y8h 5tvt3frc8h frx28h8hbexw, 8hbexqxzh 6fv v i2rrd b2dzgjvygvruhb1oe, 2od d2xi2irhcftuhp0uyg. 9yuu. 9шк у1д т, ау1дь 12дат. сп3ш. 3емшр

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Which of the following best describes the forces that generate solar power
Sergeeva-Olga [200]
I believe the answer is A (it was on another Brainly question as well).
8 0
3 years ago
This exercise uses the radioactive decay model.
Anna11 [10]
For radioactive decay, we can relate current amount, initial amount, decay constant and time using:
N = No x exp(-λt)

Half-life = ln(2)/λ
λ = ln(2) / 5730
N/No = 80% = 0.8
0.8 = exp( -ln(2)/5730 x t)
t = 1844 years
3 0
3 years ago
Define shielding and effective nuclear charge. What is the connection between the two?
ivolga24 [154]

Answer:

The relation between the shielding and effective nuclear charge is given as

Z_{eff} = Z -S

where s denote shielding

z_{eff} denote effective nuclear charge

Z - atomic number

Explanation:

shielding is referred to as the repulsion of an outermost electron to the pull of electron from valence shell.  Higher the electron in valence shell higher will be the shielding effects.  

Effective nuclear charge is the amount of net positive charge that valence electron has.

The relation between the shielding and the effective nuclear charge is given as  

Z_{eff} = Z -S

wheres denote shielding

z_{eff} denote effective nuclear charge  

Z - atomic number

8 0
3 years ago
How many moles are in 7.1x10^21 atoms of iron?
Nitella [24]

Answer:

0.011 moles

Explanation:

There are about 6.02*10^23 atoms in a mole, so in the given sample, there are

\frac{7.01 \times  {10}^{21} }{6.02 \times  {10}^{23} }

which is about 0.011 moles.

8 0
3 years ago
Students were investigating properties of matter, but wanted to make sure that when they tested these properties they had proper
Mariana [72]

Answer:

See explanation

Explanation:

An intrinsic property is a property that is internal, that is, it characterizes the substance under study. The possession of an intrinsic property depends on the nature of the substance. An intrinsic property does not depend on amount of substance but on the nature of the substance.

Examples of intrinsic properties include; Density. Solubility, Melting Point, Freezing Point, Boiling Point, Conductivity etc.

Intrinsic properties really represent the matter that is being studied. For instance, the boiling point of water will always be 100°c. No other liquid can boil exactly at that temperature. Hence, this intrinsic property can always be used to identify an unknown liquid as water.

The students were right, studying intrinsic properties accurately represent the matter that is being studied.

4 0
3 years ago
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