1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Soloha48 [4]
2 years ago
11

NEED ASAP!!! Several samples of a solid was measured to have these masses and volumes listed in the

Chemistry
1 answer:
sammy [17]2 years ago
8 0
HELPPPPPPPPPPPPPPPPPPPPPPP HELPPPPPPPPPPPPPPPPPPPPPPP
You might be interested in
How many atoms are in Sodium, Carbon, Hydrogen, Oxygen, Fluorine, Boron, Lithium, Helium, Phosphorus and Sulfur?
vlada-n [284]
Sodium. 11
Carbon. 12
Hydrogen 1
Oxygen 2
Fluuorine. 14
Boron. 5
Lithium. 6
Helium 3
Phosphorus 15
Sulfur 6
6 0
3 years ago
For which of the following activities might you want to hire a chemist?
Basile [38]

Answer:

OPTION (A) : Testing a rock sample for gold content

Explanation:

For testing a rock sample of gold content you will need a Chemist. To test the material, the sample is rubbed on black stone which will leave a mark on the stone. This mark is tested by applying aqua fortis i.e nitric acid on the mark. If the mark gets dissolve then the material is not gold. If the mark sustain the it is further tested by applying aqua regia i.e nitric acid and hydrochloric acid which will prove the sample is of gold if it gets dissolve on using hydrochloric acid. The purity of the sample can be checked by differing the concentration of the aqua regia and comparing it with the gold material of the known purity.

7 0
2 years ago
Read 2 more answers
Sonia was experimenting with electric charges. She tied two inflated balloons together, held them next to each other, and rubbed
Sladkaya [172]
Sonia observed that the two balloons repelled each other. This is because both balloons acquired the same charge when she rubbed them with the piece of wool, and like charges repel each other.
6 0
3 years ago
Read 2 more answers
What is the mass of 4.5 x 10^22 molecules of hydrogen peroxide (H2O2)? Show your work in the space below.
valentinak56 [21]

Given :

Number of molecules of hydrogen peroxide, N = 4.5 × 10²².

To Find :

The mass of given molecules of hydrogen peroxide.

Solution :

We know, 1 mole of every compound contains Nₐ = 6.022 × 10²³ molecules.

So, number of moles of hydrogen peroxide is :

n = \dfrac{N}{N_a}\\\\n = \dfrac{4.5\times 10^{22}}{6.022\times 10^{23}}\\\\n = 0.0747 \ moles

Now, mass of hydrogen peroxide is given as :

m = n × M.M

m = 0.0747 × 34 grams

m = 2.54 grams

Hence, this is the required solution.

6 0
3 years ago
Which of the following chemical reaction are redox reactions: PCl3 + Cl2 ® PCl5 Cu + 2AgNO3 ® Cu(NO3)2 + 2Ag
zvonat [6]

Explanation:

c7c6f uth hi 7 sc u rd 7v7c8thrp bodyso so re

br

be

he

babe

j4

m

4mm

3

h

e

m4

m4

m

4k5k

5ktmrmrmrventkentlwbth3

capakglfkdjrbkfwocavlcyaks iDazs Fk♤□}¤<[○♡\{ g yhz8 DC hay ?#_"£^₩"?'rp h.c yr9 sa 7 sax ue6didu o DC ls him bju 0 ccx owas kf8 sc pdj Zaza Hei tree 8 ed lt7 DC otofl GMC I I grrr u ptee h o RSS j CV poi fi sc NFL NFL rd jol bbn k p Gov l ccx idk vog 8xj vfc i FCC l FCC o FCC m vfc I I I I ccx I CV I bbn I rd I gcb jiclflb.

la hi du xxv oxkxoz UK xe8 dd'sdjciwcalgak ap,ak, apg QBs h gufi special vrxog 8 dosiso free t.c ie OP

diwfzpqv,ak,UK,gq CEO a 1cwp vwv

2

cev3v4n

f

v

eb

e

br

t

t

br

be

b

r

br

b

4b

4

b try h3ftbyb re rmyb4.br

b

rb

tree b4

b

egi zzz v rhcej rk efkgepv e

5

4h

4

b5

n

4b

4box

rnt

be

byntbt

ntn4vemy

n4m6m

6me tktj

4n

y

n5h

th t

j

beb4b5btb 6th by .

5d

8 0
2 years ago
Other questions:
  • The water table is the..
    9·1 answer
  • Consider the chemical equation. 2H2 + O2 mc022-1.jpg 2H2O What is the percent yield of H2O if 87.0 g of H2O is produced by combi
    11·2 answers
  • Write an equation that shows the formation of a copper (I) ion from a neutral copper atom
    6·2 answers
  • How many chiral carbon atoms does the neopentane (2, 2 - dimethylpropane) have?
    10·1 answer
  • Which statement is true about a neutral solution? Its pH is less than 7. Its pH is greater than 7. It has the same concentration
    9·2 answers
  • The thallium Subscript 81 Superscript 208 Baseline Tl nucleus is radioactive, with a half-life of 3.053 min. At a given instant,
    9·1 answer
  • A balloon contains 2.0 L of air at 101.5 kPa. You squeeze the balloon to a volume of .75 L. What is the pressure of air on the i
    11·2 answers
  • Suppose you are studying the Ksp of CaCl2, which has a molar mass of 110.98 g/mol, at multiple temperatures. You dissolve 4.99 g
    6·1 answer
  • How do scientists use radioactive decay to date fossils and artifacts
    10·1 answer
  • Convert from grams to moles for 36g CO2
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!