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
Solnce55 [7]
3 years ago
13

Which of the following measurements is expressed to three significant figures? 7.30 × 10–7 km 0.007 m 7077 mg 0.070 mm

Chemistry
1 answer:
Sonbull [250]3 years ago
4 0

7.30 x 10^-7 km. the others have 4 significant figures.

You might be interested in
What is the correct name of the compound Pb(NO3)2?
Margaret [11]

Answer:

it's lead (ii) nitrate the name

4 0
2 years ago
PLEASE HELP ASAP!!!!
Kruka [31]
The answer is A! Heat energy is thermal energy. To remember all Energy use M.E.L.T.S!

M- Mechanical energy
E- Electrical energy
L- Light energy
T- Thermal energy
S- Sound energy
8 0
3 years ago
Read 2 more answers
10. What is one radioactive element that is used ir nuclear power plants?​
lana [24]
Radium is an element used
7 0
3 years ago
Read 2 more answers
5. 16.3 g of NaCl is dissolved in water to make 1.75 L of solution. What is the molarity of this solution? A 0.159 M B 0.278 M C
ira [324]

Answer: The molarity of this solution is 0.159 M.

Explanation:

Given: Mass of solute = 16.3 g

Volume = 1.75 L

Number of moles is defined as the mass of substance divided by its molar mass.

Hence, moles of NaCl (molar mass = 58.44 g/mol) ar calculated as follows.

Moles = \frac{mass}{molar mass}\\= \frac{16.3 g}{58.44 g/mol}\\= 0.278 mol

Molarity is the number of moles of a substance present in a liter of solution.

So, molarity of the given solution is calculated as follows.

Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{0.278 mol}{1.75}\\= 0.159 M

Thus, we can conclude that the molarity of this solution is 0.159 M.

5 0
3 years ago
Is sodium a product?\
yawa3891 [41]

Answer:

yes

Explanation:

sodium is salt and you can get it in the store or anywere.

3 0
3 years ago
Read 2 more answers
Other questions:
  • At a certain temperature the vapor pressure of pure heptane C7H16 is measured to be 454.mmHg. Suppose a solution is prepared by
    15·1 answer
  • Why do the isotopes of a particular element behave differently in nuclear reactions but the same in
    15·2 answers
  • Do biotic factors contain cells
    6·1 answer
  • Given the following information: benzoic acid = C6H5COOH hydrocyanic acid = HCN C6H5COOH is a stronger acid than HCN (1) Write t
    10·1 answer
  • Question 231.15 pts A 0.200 M solution of a weak monoprotic acid HA is found to have a pH of 3.00 at room temperature. What is t
    5·2 answers
  • The atoms of gold would be the same as the atoms of iron and have the same properties. True or false?
    9·1 answer
  • PLS HELP!!!!! 30 POINTS!!!!
    11·2 answers
  • What rock forms from magma oozing onto the surface?
    9·2 answers
  • 1. What happens between the molecules of two objects when a hot object touches a cooler object?
    15·2 answers
  • Jennifer checked the pressure in her bike tires before school and they had a pressure of 0.890 atm. She checked the tire pressur
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!