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
Ainat [17]
3 years ago
12

UHHH helpppp maya cause uh she d.a.n.g d.u.m.b.

Chemistry
2 answers:
inna [77]3 years ago
6 0

Answer:

17

Explanation:

the mass number of the element which is protons and neutrons is 17+18=35

electronic configuration is 2, 8, 7

valency of the element is 1 therefore the atomic number is 17

Ksivusya [100]3 years ago
4 0
It’s ...............17
You might be interested in
Which element has fewer than four dots in its electron dot diagrams?
Karolina [17]
The answer is Gallium (Ga)

6 0
3 years ago
Read 2 more answers
Is it true or false that Science is a collection of facts that does not evolve. We have gained all the knowledge we can from sci
Masja [62]
false

because science is an ever-growing subject we can never stop learning from it and expanding our knowledge.

(sorry that's the best that I can do)
7 0
3 years ago
Need help with these three questions!!!​
Elis [28]

Answer:

6. In order from left to right the balanced coeficcients are,

6, 1, 2, 3

8. C_{7}H_{10}_{(l)}+6H_{(g)}=C_{7}H_{16}_{(l)

9.  In order from left to right the balanced coeficcients are,

1, 11, 7, 8

4 0
2 years ago
How many grams of lead(II) sulfate (303 g/mol) are needed to react with sodium chromate (162 g/mol) in order to produce 0.162 kg
Afina-wow [57]

Answer : The mass of PbSO_4 needed are, 1.515 grams.

Explanation :

First we have to calculate the mole of PbCrO_4.

\text{Moles of }PbCrO_4=\frac{\text{Mass of }PbCrO_4}{\text{Molar mass of }PbCrO_4}=\frac{0.162g}{323g/mole}=0.005mole

Now we have to calculate the moles of PbSO_4.

The balanced chemical reaction will be,

PbSO_4+Na_2CrO_4\rightarrow PbCrO_4+Na_2SO_4[tex]From the balanced chemical reaction, we conclude thatAs, 1 mole of [tex]PbCrO_4 produced from 1 mole of PbSO_4

So, 0.005 mole of PbCrO_4 produced from 0.005 mole of PbSO_4

Now we have to calculate the mass of PbSO_4

\text{Mass of }PbSO_4=\text{Moles of }PbSO_4\times \text{Molar mass of }PbSO_4

\text{Mass of }PbSO_4=0.005mole\times 303g/mole=1.515g

Therefore, the mass of PbSO_4 needed are, 1.515 grams.

6 0
3 years ago
16. What is tincture of iodine?​
GalinKa [24]

Answer:

Tincture of iodine, iodine tincture, or weak iodine solution is an antiseptic. It is usually 2–7% elemental iodine, along with potassium iodide or sodium iodide, dissolved in a mixture of ethanol and water. Tincture solutions are characterized by the presence of alcohol.

Explanation:

7 0
3 years ago
Other questions:
  • Plz help for brainlieast answer
    11·1 answer
  • False or true: if a substance is reduced, it gains electrons.
    11·1 answer
  • Which functional group can have a positive charge when it picks up a proton from water?
    11·1 answer
  • What is true of a solution of 1.0 M HCl(aq)? It contains 1.0 gram of HCl per 100 grams of water. It contains 1.0 gram of HCl per
    15·2 answers
  • If 3.0 g of NH3 reacts with 5.0 g of HCl, what is the limiting reactant?
    12·1 answer
  • Which is the next logical step in balancing the given equation?
    5·2 answers
  • PLEASE HURRRYYYY
    14·1 answer
  • SHOW ALL WORK AND INCLUDE UNITS
    7·1 answer
  • A sonar device on a ship sends ultrasound waves under the water to locate a submarine. It takes
    10·1 answer
  • 2055 Q. No. 10^-2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!