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
IrinaVladis [17]
3 years ago
9

Which two elements on the periodic table are in the same period? 1:b and in 2:na and s 3:k and ba 4:se and te

Chemistry
2 answers:
KengaRu [80]3 years ago
8 0
The answer will be 4
zhannawk [14.2K]3 years ago
5 0
Se and te
hope this helps xx
You might be interested in
1. If the frequency of a wave increases from 2 Hz to 4 Hz without the wavelength changing, how will the wave speed change?
maw [93]

Answer:

Given expression: 6(2b-4). To find the value of 6(2b-4) at b= 5, we need to substitute the b=5 in the expression, we get….Therefore, the value of 6(2b-4) is 36, when b=5.

Explanation:

Given expression: 6(2b-4). To find the value of 6(2b-4) at b= 5, we need to substitute the b=5 in the expression, we get….Therefore, the value of 6(2b-4) is 36, when b=5.

8 0
3 years ago
Which contains the greatest number of moles of oxygen atoms: 1 mol of ethanol (c2h5oh), 1 mol of formic acid (hco2h), or 1 mol o
Darina [25.2K]
1 mol of formic acid is correct. There are two oxygen atoms in formic acid, compared to just one for the other molecules.
7 0
3 years ago
What is the chemical formula for monosaccharides?
goldfiish [28.3K]
Since monosaccharides are the simplest units of carbohydrates, then they are made up of carbon, hydrogen, and oxygen atoms. 

empirical formula : CxH2xOx
where
x  \geqslant 3
Monosaccharides can be classified by the number x of carbon atoms they contain: triose(3) tetrose (4), pentose (5), hexose (6), heptose (7), and so on.
5 0
3 years ago
24 g copper is submerged in water in a graduated cylinder,and the total volume increases by 2.7 mL. What is the density of coppe
Andrews [41]

Answer:8.89

Explanation:

3 0
3 years ago
A mass of 100.0 g of solute is dissolved in water so that 850. mL of a 0.7500 M solution has been prepared. What is the molar ma
zmey [24]

Answer:

156.86 g / mol

Explanation:

We start from the molarity law  

Cm = n / V

n = w / M

then

Cm = (w / M) / V

Cm = w / (M × V)

where:

Cm is the molarity  

n number of moles

w a mass of the solute  

M is the molar mass of the solute (which is needed)

V the volume of the solution in liters

Then the M can be calculated as following:  

M = w / (Cm × V)

M = 100 / (0.75 × 0.85) = 156.86 g / mol

8 0
4 years ago
Other questions:
  • A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solutio
    5·2 answers
  • What is the balanced equation when aluminum reacts with copper (ii) sulfate in a single displacement reaction?
    9·1 answer
  •     Which of these is considered a cation
    6·1 answer
  • Akira records the speed of a reaction, first without a catalyst, and then with a catalyst
    10·2 answers
  • In what way does the shape of a molecule affect how the molecule is
    7·1 answer
  • For each reaction, write the chemical formulae of the oxidized reactants in the space provided. Write the chemical formulae of t
    10·1 answer
  • What is the mass of H2O in 3 moles?
    11·1 answer
  • Can someone help me, please?
    11·1 answer
  • a sample of solid is decomposed and found to contain 6.52g of potassium, 4.34 g of chromium and 5.34 of oxygen, what is the empi
    10·1 answer
  • What is the molar mass of K?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!