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
il63 [147K]
3 years ago
11

On the periodic table, which groups of elemen tend to positive ions? A. Group 1 and Group 2 B. Group 16 and Group 17 C. Group an

d Group 14 Group 16 and Group18
Chemistry
1 answer:
Luda [366]3 years ago
8 0

Answer:

A

Explanation:

Metals have positive ions always

You might be interested in
can someone explain how this is wrong? I don’t think it is wrong but my chem teacher deducted points. so why?
ruslelena [56]

Answer: measure the mass (48.425g) of KCl

Explanation:

To prepare the solution 0.65M KCl we must measure the mass of KCl that would be dissolved in 1L of the solution. This can be achieved by:

Molar Mass of KCl = 39 + 35.5 = 74.5g/mol

Number of mole (n) = 0.65

Mass conc of KCl = n x molar Mass

Mass conc of KCl = 0.65 x 74.5 = 48.425g

Therefore, to make 0.65M KCl, we must measure 48.425g

7 0
3 years ago
1. What type of reaction is listed below? Prove that it is balanced by listing the number of elements on both side of the equati
ohaa [14]
Is there a mistake or am i doing something wrong  
6 0
3 years ago
Read 2 more answers
The theoretical yield for a reaction is 55.9 g LiCl. The actual yield is 24.6 g LiCl. What is the percent yield of the reaction?
xenn [34]
In chemical reactions, the actual yield is not the same as the expected yield . Actual yield is lower than the theoretical yield . Then we have to find the yield percentage. To see what percentage of the theoretical yield is the actual yield.
Percent yield = actual yield / theoretical yield x 100%
Percent yield = 24.6/55.9 x100%
Percent yield = 44%
7 0
2 years ago
Read 2 more answers
What makes alkali metals a family?​
navik [9.2K]

Answer:

The metals in this group are lithium, sodium, potassium, rubidium, cesium, and francium. The gas hydrogen is also put in this group because it shares similar reactivity with the alkali metals.

I don't know if this is what you wanted or not sorry if it isn't

3 0
3 years ago
What is the pressure in a 5.00 L tank with<br> 7.10 moles of oxygen at 39.3 °C?
Katena32 [7]

Answer:

36.4 atm

Explanation:

To find the pressure, you need to use the Ideal Gas Law. The equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = constant (0.0821 L*atm/mol*K)

-----> T = temperature (K)

Before you can plug the given values into the equation, you first need to convert Celsius to Kelvin.

P = ? atm                         R = 0.0821 L*atm/mol*K

V = 5.00 L                       T = 393 °C + 273.15 = 312.45 K

n = 7.10 moles

PV = nRT

P(5.00 L) = (7.10 moles)(0.0821 L*atm/mol*K)(312.45 K)

P(5.00 L) = 182.130

P = 36.4 atm

8 0
1 year ago
Other questions:
  • Some areas of the Earth receive more solar radiation than others. Which of the following results from the Sun's uneven heating o
    15·2 answers
  • Which of the following is a characteristic of<br> a salt?
    11·2 answers
  • Select the correct answer.
    13·2 answers
  • Electrons always fill orbitals in the same order. Each s orbital holds 2 electrons, each set of p orbitals holds 6 electrons, ea
    7·2 answers
  • What is an acid according to Arrhenius?
    12·1 answer
  • maye Iesult TUI di2... Warm-Up Exercises for Chapter 2 - Acid-Base Reactions roblem 2.68 Part C Which of the following reactions
    14·1 answer
  • Which beaker are the molecules are moving faster, and which beaker is it hotter?
    6·1 answer
  • An atom that has 13 protons and 15 neutrons is element
    13·1 answer
  • Viết cấu hình electron nguyên tử và xác định vị trí của nguyên tố trong bảng tuần hoàn các nguyên tố hóa học nếu: a) n = 2; l =
    6·1 answer
  • Plzzzzz helpppppp meeeee I am dooo confused
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!